Tutorial

From Serpent Wiki
Revision as of 11:36, 11 September 2017 by Ville Valtavirta (talk | contribs) (→‎Running the input)
Jump to: navigation, search

This page is the beginning of a hands-on tutorial in Serpent that will walk you through the creation of simple pin-cell and assembly geometry models and the use of those models for some reactor physics simulations.

Pre-requisite

Compiled version of Serpent 2.

This tutorial assumes that you can run Serpent 2 simply by typing sss2 in your terminal, i.e. you either have the executable in your PATH or have created an alias for the executable. If this is not the case, you'll need to replace the sss2 run-commands with the full path to your executable.

Cross section libraries.

This tutorial assumes that you have defined a default cross section directory file for Serpent using the SERPENT_ACELIB environment variable (see the notes of set acelib). If this is not the case, you'll need to give the path to a cross section directory file in the input using set acelib.

Basics of Serpent input

Explain different (typical) parts such as:

  • Material definitions
  • Geometry definitions
  • Run parameters/options

Infinite homogeneous model

Overview

The first model in this tutorial is the simplest geometry model one can imagine: an infinite homogeneous system consisting of a single material. Here the infinite material is 4.0 wt-% enriched uranium with a density of 10.1 g/cm3.

We will use the infinite homogeneous system example for three tasks:

  1. Finding the critical enrichment of an infinite uranium system.
  2. Tallying the neutron energy spectrum in the critical infinite uranium system.
  3. Testing the effect of added neutron moderation on the multiplication factor and energy spectrum of the system.

Input

The input of the model is shown below and consists of only five definitions:

  1. Defining the single material, which is called fuel in this example.
  2. Defining the geometry by
    1. Defining an "infinite" surface, i.e. a surface enclosing all of space. The surface name is s1 in this example.
    2. Defining two geometry cells: One containing the material fuel and the other being defined as an outside cell.
  3. Setting up any other run parameters, here simply setting the neutron population that is to be simulated.

Colors in the input correspond to:

  • Comments: These are ignored by Serpent.
  • Control words: A constantly updating list of control words can be found in the Input syntax manual. Everything between two control words that is not a comment is treated as a parameter to the first control word.
  • Name definitions: Name definitions for the various Serpent objects can contain characters and numbers and are used for referencing certain objects in other definitions.
  • Name references: References to named objects defined in the input. Name references can be made even if the name definition has not been made yet as long as the name will be defined later in the input.

Input for 2D pin-cell geometry 

% --- Very simple infinite homogeneous geometry for Serpent tutorial

/************************
 * Material definitions *
 ************************/

% --- Fuel material (4.0 wt-% enriched uranium dioxide), density 10.1 g/cm3

mat fuel     -10.1
92235.03c    -0.04 
92238.03c    -0.96

/************************
 * Geometry definitions *
 ************************/

% --- "Surface" at infinity

surf s1 inf

% --- Cell c1 belongs to the base universe 0, contains the material fuel
%     and covers everything inside surface s1

cell c1 0 fuel      -s1

% --- Cell c2 belongs to the base universe 0, is defined as an "outside" cell
%     and covers everything outside surface s1

cell c2 0 outside    s1

/******************
 * Run parameters *
 ******************/

% --- Neutron population: 5000 neutrons per cycle, 100 active / 20 inactive cycles

set pop 5000 100 20

Running the input

Copy and paste the input to a file named infinite on your computer.

Simply run the input from terminal, by being in the same directory as the input-file and executing 

sss2 infinite

An example of the expected output is given below, although you should note that the statistical nature of the Monte Carlo methods means that you will not get exactly same values for the k-effective:

Expected output for the infinite system 

  _                   .-=-.           .-=-.          .-==-.       
 { }      __        .' O o '.       .' O o '.       /  -<' )--<   
 { }    .' O'.     / o .-. O \     / o .-. O \     /  .---`       
 { }   / .-. o\   /O  /   \  o\   /O  /   \  o\   /O /            
  \ `-` /   \ O`-'o  /     \  O`-'o  /     \  O`-`o /             
   `-.-`     '.____.'       `._____.'       `.____.'              

Serpent 2 beta

A Continuous-energy Monte Carlo Reactor Physics Burnup Calculation Code

 - Version 2.1.29 (June 12, 2017) -- Contact: serpent@vtt.fi

 - Reference: J. Leppanen, et al. "The Serpent Monte Carlo code: Status,
              development and applications in 2013." Ann. Nucl. Energy,
              82 (2015) 142-150.

 - Compiled Jun 19 2017 10:21:15

 - MPI Parallel calculation mode not available

 - OpenMP Parallel calculation mode available

 - Geometry and mesh plotting available

 - Default data path set to: "/home/vvvillehe/XSdata/"

Begin calculation on Mon Sep 11 12:32:41 2017

Reading input file "input"...

Checking duplicate input definitions...
OK.

Creating geometry...
OK.

Counting geometry zones...

Processing cells...
OK.

Linking materials to geometry...
OK.

Counting cells...
OK.

Processing data for group constant generation:

 - 70 energy groups in micro-group structure
 - 2 energy groups in macro-group structure
 - B1 fundamental mode calculation is not run
 - Group constants generated in 1 universes
 - Discontinuity factors are not calculated
 - Pin-power distributions are not calculated
 - Albedos are not calculated
 - Poison cross sections are not calculated

Reading ACE directory files...
OK.

Adding nuclides in material fuel...

Nuclide  92235.03c -- uranium 235 at 300K (U-235)
Nuclide  92238.03c -- uranium 238 at 300K (U-238)

Checking data and printing output...
OK.


***** Mon Sep 11 12:32:42 2017 (seed = 1505122361)
Warning message from function ProcessNuclides:

Minimum photon cross section energy 1.000000E+37 MeV is
above the energy grid minimum 1.000000E-03 MeV.
The energy grid minimum is set to 1.000000E+37 MeV.
Possible changes in energy cutoff cards (warned if any).


***** Mon Sep 11 12:32:42 2017 (seed = 1505122361)
Warning message from function ProcessNuclides:

Photon energy cutoff 1.000000E-03 MeV is changed to 1.000000E+37.


Generating unionize energy grids...

Adding points:

 92235.03c -- Points added in neutron grid: 30884
 92238.03c -- Points added in neutron grid: 64918

Generating unionized energy grid:

 - Unionization performed without grid thinning
   between 1.00E-11 and 20.0 MeV.

 - Final neutron grid size: 95836 points.

 - 2.12 Mb of memory allocated for grid data

OK.

Processing cross sections and ENDF reaction laws...

Nuclide  92235.03c -- uranium 235 at 300K (U-235)
Nuclide  92238.03c -- uranium 238 at 300K (U-238)

SUMMARY -- 2 nuclides included in calculation:

 - 2 transport nuclides
 - Neutron energy cut-offs at 1.00E-11 and 20.0 MeV
 - 88 transport reactions
 - 2 special reactions
 - 18.07 Mb of memory allocated for data

Normalizing compositions and processing mixtures...
OK.

Allocating memory for macroscopic cross section data...
OK.

Allocating memory for particle structures...
OK.

Calculating maximum densities...
OK.

Performing density cut-off...
OK.

Sorting material-wise reaction lists:

   0% complete
 100% complete

Calculating macroscopic cross sections:

   0% complete
 100% complete

Calculating DT neutron majorant cross section:

   0% complete
 100% complete

Clearing results and statistics...
OK.

Sampling initial source...
OK.

Inactive cycle   1 /  20: k-eff = 1.00000
Inactive cycle   2 /  20: k-eff = 0.79960
Inactive cycle   3 /  20: k-eff = 0.85301
Inactive cycle   4 /  20: k-eff = 0.85199
Inactive cycle   5 /  20: k-eff = 0.87227
Inactive cycle   6 /  20: k-eff = 0.82656
Inactive cycle   7 /  20: k-eff = 0.83168
Inactive cycle   8 /  20: k-eff = 0.79659
Inactive cycle   9 /  20: k-eff = 0.84279
Inactive cycle  10 /  20: k-eff = 0.81633
Inactive cycle  11 /  20: k-eff = 0.84882
Inactive cycle  12 /  20: k-eff = 0.82505
Inactive cycle  13 /  20: k-eff = 0.86696
Inactive cycle  14 /  20: k-eff = 0.87841
Inactive cycle  15 /  20: k-eff = 0.83747
Inactive cycle  16 /  20: k-eff = 0.83513
Inactive cycle  17 /  20: k-eff = 0.85751
Inactive cycle  18 /  20: k-eff = 0.84910
Inactive cycle  19 /  20: k-eff = 0.85760
Inactive cycle  20 /  20: k-eff = 0.85382

----- Begin active cycles -----

------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle    1 / 100  Source neutrons :  4961

Running time :                  0:00:08
Estimated running time :        -:--:--
Estimated running time left :   -:--:--

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.84716 +/- 0.00000  [0.84716  0.84716]
k-eff (implicit)  = 0.84246 +/- 0.00000  [0.84246  0.84246]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle    2 / 100  Source neutrons :  4769

Running time :                  0:00:09
Estimated running time :        -:--:--
Estimated running time left :   -:--:--

Estimated relative CPU usage :   100.1%

k-eff (analog)    = 0.82759 +/- 0.01957  [0.78924  0.86595]
k-eff (implicit)  = 0.84025 +/- 0.00220  [0.83594  0.84457]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle    3 / 100  Source neutrons :  5127

Running time :                  0:00:09
Estimated running time :        -:--:--
Estimated running time left :   -:--:--

Estimated relative CPU usage :    99.8%

k-eff (analog)    = 0.82791 +/- 0.01130  [0.80576  0.85006]
k-eff (implicit)  = 0.83933 +/- 0.00157  [0.83624  0.84241]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle    4 / 100  Source neutrons :  5061

Running time :                  0:00:10
Estimated running time :        -:--:--
Estimated running time left :   -:--:--

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83060 +/- 0.00843  [0.81407  0.84712]
k-eff (implicit)  = 0.83757 +/- 0.00208  [0.83350  0.84164]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle    5 / 100  Source neutrons :  4937

Running time :                  0:00:10
Estimated running time :        0:00:57
Estimated running time left :   0:00:46

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83010 +/- 0.00655  [0.81726  0.84293]
k-eff (implicit)  = 0.83832 +/- 0.00178  [0.83484  0.84180]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle    6 / 100  Source neutrons :  5225

Running time :                  0:00:11
Estimated running time :        0:00:57
Estimated running time left :   0:00:46

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83597 +/- 0.00795  [0.82040  0.85155]
k-eff (implicit)  = 0.83637 +/- 0.00243  [0.83161  0.84113]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle    7 / 100  Source neutrons :  4657

Running time :                  0:00:11
Estimated running time :        0:00:56
Estimated running time left :   0:00:44

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83169 +/- 0.00797  [0.81608  0.84730]
k-eff (implicit)  = 0.83701 +/- 0.00215  [0.83280  0.84123]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle    8 / 100  Source neutrons :  5290

Running time :                  0:00:12
Estimated running time :        0:00:57
Estimated running time left :   0:00:44

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83432 +/- 0.00738  [0.81985  0.84879]
k-eff (implicit)  = 0.83615 +/- 0.00205  [0.83212  0.84017]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle    9 / 100  Source neutrons :  4816

Running time :                  0:00:12
Estimated running time :        0:00:56
Estimated running time left :   0:00:43

Estimated relative CPU usage :   100.1%

k-eff (analog)    = 0.83288 +/- 0.00667  [0.81981  0.84595]
k-eff (implicit)  = 0.83567 +/- 0.00187  [0.83200  0.83934]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   10 / 100  Source neutrons :  5014

Running time :                  0:00:13
Estimated running time :        0:00:56
Estimated running time left :   0:00:43

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83196 +/- 0.00604  [0.82013  0.84379]
k-eff (implicit)  = 0.83556 +/- 0.00168  [0.83227  0.83885]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   11 / 100  Source neutrons :  5178

Running time :                  0:00:13
Estimated running time :        0:00:56
Estimated running time left :   0:00:42

Estimated relative CPU usage :    99.9%

k-eff (analog)    = 0.83387 +/- 0.00578  [0.82253  0.84520]
k-eff (implicit)  = 0.83539 +/- 0.00153  [0.83240  0.83839]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   12 / 100  Source neutrons :  4913

Running time :                  0:00:14
Estimated running time :        0:00:56
Estimated running time left :   0:00:42

Estimated relative CPU usage :   100.1%

k-eff (analog)    = 0.83422 +/- 0.00529  [0.82385  0.84460]
k-eff (implicit)  = 0.83448 +/- 0.00167  [0.83120  0.83775]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   13 / 100  Source neutrons :  4842

Running time :                  0:00:14
Estimated running time :        0:00:56
Estimated running time left :   0:00:41

Estimated relative CPU usage :    99.9%

k-eff (analog)    = 0.83249 +/- 0.00517  [0.82236  0.84262]
k-eff (implicit)  = 0.83363 +/- 0.00175  [0.83020  0.83707]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   14 / 100  Source neutrons :  5068

Running time :                  0:00:15
Estimated running time :        0:00:56
Estimated running time left :   0:00:41

Estimated relative CPU usage :   100.1%

k-eff (analog)    = 0.83179 +/- 0.00484  [0.82231  0.84127]
k-eff (implicit)  = 0.83464 +/- 0.00191  [0.83090  0.83839]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   15 / 100  Source neutrons :  5233

Running time :                  0:00:15
Estimated running time :        0:00:56
Estimated running time left :   0:00:40

Estimated relative CPU usage :    99.9%

k-eff (analog)    = 0.83374 +/- 0.00491  [0.82412  0.84335]
k-eff (implicit)  = 0.83445 +/- 0.00179  [0.83095  0.83796]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   16 / 100  Source neutrons :  4858

Running time :                  0:00:16
Estimated running time :        0:00:56
Estimated running time left :   0:00:40

Estimated relative CPU usage :   100.2%

k-eff (analog)    = 0.83391 +/- 0.00459  [0.82491  0.84292]
k-eff (implicit)  = 0.83446 +/- 0.00167  [0.83118  0.83774]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   17 / 100  Source neutrons :  5086

Running time :                  0:00:16
Estimated running time :        0:00:56
Estimated running time left :   0:00:39

Estimated relative CPU usage :    99.8%

k-eff (analog)    = 0.83492 +/- 0.00443  [0.82624  0.84360]
k-eff (implicit)  = 0.83506 +/- 0.00168  [0.83176  0.83836]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   18 / 100  Source neutrons :  4819

Running time :                  0:00:17
Estimated running time :        0:00:56
Estimated running time left :   0:00:39

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83410 +/- 0.00426  [0.82576  0.84244]
k-eff (implicit)  = 0.83530 +/- 0.00160  [0.83215  0.83844]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   19 / 100  Source neutrons :  5056

Running time :                  0:00:17
Estimated running time :        0:00:56
Estimated running time left :   0:00:38

Estimated relative CPU usage :   100.1%

k-eff (analog)    = 0.83385 +/- 0.00403  [0.82594  0.84175]
k-eff (implicit)  = 0.83517 +/- 0.00152  [0.83218  0.83815]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   20 / 100  Source neutrons :  4949

Running time :                  0:00:18
Estimated running time :        0:00:56
Estimated running time left :   0:00:38

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83320 +/- 0.00388  [0.82559  0.84080]
k-eff (implicit)  = 0.83535 +/- 0.00146  [0.83249  0.83820]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   21 / 100  Source neutrons :  4905

Running time :                  0:00:18
Estimated running time :        0:00:56
Estimated running time left :   0:00:37

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83187 +/- 0.00392  [0.82418  0.83956]
k-eff (implicit)  = 0.83604 +/- 0.00155  [0.83300  0.83907]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   22 / 100  Source neutrons :  5120

Running time :                  0:00:18
Estimated running time :        0:00:56
Estimated running time left :   0:00:37

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83154 +/- 0.00375  [0.82418  0.83890]
k-eff (implicit)  = 0.83653 +/- 0.00156  [0.83348  0.83958]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   23 / 100  Source neutrons :  5099

Running time :                  0:00:19
Estimated running time :        0:00:56
Estimated running time left :   0:00:36

Estimated relative CPU usage :   100.1%

k-eff (analog)    = 0.83195 +/- 0.00361  [0.82487  0.83903]
k-eff (implicit)  = 0.83612 +/- 0.00154  [0.83310  0.83915]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   24 / 100  Source neutrons :  5036

Running time :                  0:00:19
Estimated running time :        0:00:56
Estimated running time left :   0:00:36

Estimated relative CPU usage :    99.9%

k-eff (analog)    = 0.83258 +/- 0.00351  [0.82569  0.83946]
k-eff (implicit)  = 0.83591 +/- 0.00149  [0.83298  0.83883]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   25 / 100  Source neutrons :  4848

Running time :                  0:00:20
Estimated running time :        0:00:56
Estimated running time left :   0:00:35

Estimated relative CPU usage :    99.9%

k-eff (analog)    = 0.83212 +/- 0.00340  [0.82546  0.83879]
k-eff (implicit)  = 0.83539 +/- 0.00152  [0.83241  0.83838]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   26 / 100  Source neutrons :  5079

Running time :                  0:00:20
Estimated running time :        0:00:56
Estimated running time left :   0:00:35

Estimated relative CPU usage :   100.1%

k-eff (analog)    = 0.83220 +/- 0.00327  [0.82580  0.83861]
k-eff (implicit)  = 0.83586 +/- 0.00153  [0.83285  0.83887]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   27 / 100  Source neutrons :  5070

Running time :                  0:00:21
Estimated running time :        0:00:56
Estimated running time left :   0:00:34

Estimated relative CPU usage :    99.9%

k-eff (analog)    = 0.83271 +/- 0.00319  [0.82647  0.83895]
k-eff (implicit)  = 0.83564 +/- 0.00149  [0.83272  0.83857]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   28 / 100  Source neutrons :  4931

Running time :                  0:00:21
Estimated running time :        0:00:56
Estimated running time left :   0:00:34

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83277 +/- 0.00307  [0.82675  0.83878]
k-eff (implicit)  = 0.83565 +/- 0.00144  [0.83283  0.83847]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   29 / 100  Source neutrons :  4961

Running time :                  0:00:22
Estimated running time :        0:00:56
Estimated running time left :   0:00:33

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83259 +/- 0.00297  [0.82677  0.83841]
k-eff (implicit)  = 0.83578 +/- 0.00139  [0.83305  0.83851]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   30 / 100  Source neutrons :  4987

Running time :                  0:00:22
Estimated running time :        0:00:56
Estimated running time left :   0:00:33

Estimated relative CPU usage :    99.9%

k-eff (analog)    = 0.83236 +/- 0.00288  [0.82672  0.83799]
k-eff (implicit)  = 0.83580 +/- 0.00135  [0.83316  0.83844]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   31 / 100  Source neutrons :  5038

Running time :                  0:00:23
Estimated running time :        0:00:56
Estimated running time left :   0:00:32

Estimated relative CPU usage :   100.1%

k-eff (analog)    = 0.83234 +/- 0.00278  [0.82689  0.83779]
k-eff (implicit)  = 0.83597 +/- 0.00131  [0.83340  0.83855]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   32 / 100  Source neutrons :  5103

Running time :                  0:00:23
Estimated running time :        0:00:56
Estimated running time left :   0:00:32

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83286 +/- 0.00274  [0.82748  0.83824]
k-eff (implicit)  = 0.83581 +/- 0.00128  [0.83330  0.83833]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   33 / 100  Source neutrons :  4883

Running time :                  0:00:24
Estimated running time :        0:00:56
Estimated running time left :   0:00:31

Estimated relative CPU usage :    99.9%

k-eff (analog)    = 0.83275 +/- 0.00266  [0.82753  0.83796]
k-eff (implicit)  = 0.83578 +/- 0.00124  [0.83334  0.83821]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   34 / 100  Source neutrons :  5183

Running time :                  0:00:24
Estimated running time :        0:00:56
Estimated running time left :   0:00:31

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83353 +/- 0.00270  [0.82824  0.83882]
k-eff (implicit)  = 0.83560 +/- 0.00122  [0.83321  0.83799]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   35 / 100  Source neutrons :  4836

Running time :                  0:00:25
Estimated running time :        0:00:56
Estimated running time left :   0:00:30

Estimated relative CPU usage :   100.1%

k-eff (analog)    = 0.83347 +/- 0.00262  [0.82833  0.83861]
k-eff (implicit)  = 0.83555 +/- 0.00118  [0.83323  0.83787]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   36 / 100  Source neutrons :  5043

Running time :                  0:00:25
Estimated running time :        0:00:56
Estimated running time left :   0:00:30

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83361 +/- 0.00255  [0.82861  0.83861]
k-eff (implicit)  = 0.83541 +/- 0.00116  [0.83313  0.83768]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   37 / 100  Source neutrons :  5003

Running time :                  0:00:26
Estimated running time :        0:00:56
Estimated running time left :   0:00:30

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83375 +/- 0.00249  [0.82888  0.83862]
k-eff (implicit)  = 0.83548 +/- 0.00113  [0.83326  0.83769]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   38 / 100  Source neutrons :  5051

Running time :                  0:00:26
Estimated running time :        0:00:56
Estimated running time left :   0:00:29

Estimated relative CPU usage :    99.9%

k-eff (analog)    = 0.83411 +/- 0.00245  [0.82932  0.83890]
k-eff (implicit)  = 0.83546 +/- 0.00110  [0.83331  0.83762]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   39 / 100  Source neutrons :  4906

Running time :                  0:00:27
Estimated running time :        0:00:56
Estimated running time left :   0:00:29

Estimated relative CPU usage :    99.9%

k-eff (analog)    = 0.83404 +/- 0.00238  [0.82937  0.83872]
k-eff (implicit)  = 0.83571 +/- 0.00110  [0.83356  0.83787]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   40 / 100  Source neutrons :  5078

Running time :                  0:00:27
Estimated running time :        0:00:56
Estimated running time left :   0:00:28

Estimated relative CPU usage :   100.1%

k-eff (analog)    = 0.83431 +/- 0.00234  [0.82972  0.83889]
k-eff (implicit)  = 0.83567 +/- 0.00107  [0.83357  0.83777]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   41 / 100  Source neutrons :  5000

Running time :                  0:00:27
Estimated running time :        0:00:56
Estimated running time left :   0:00:28

Estimated relative CPU usage :    99.9%

k-eff (analog)    = 0.83456 +/- 0.00229  [0.83006  0.83905]
k-eff (implicit)  = 0.83559 +/- 0.00105  [0.83353  0.83765]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   42 / 100  Source neutrons :  5024

Running time :                  0:00:28
Estimated running time :        0:00:56
Estimated running time left :   0:00:27

Estimated relative CPU usage :    99.9%

k-eff (analog)    = 0.83489 +/- 0.00226  [0.83045  0.83933]
k-eff (implicit)  = 0.83572 +/- 0.00103  [0.83369  0.83774]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   43 / 100  Source neutrons :  4793

Running time :                  0:00:28
Estimated running time :        0:00:56
Estimated running time left :   0:00:27

Estimated relative CPU usage :   100.1%

k-eff (analog)    = 0.83439 +/- 0.00227  [0.82995  0.83883]
k-eff (implicit)  = 0.83581 +/- 0.00101  [0.83383  0.83780]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   44 / 100  Source neutrons :  5084

Running time :                  0:00:29
Estimated running time :        0:00:56
Estimated running time left :   0:00:26

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83423 +/- 0.00222  [0.82987  0.83858]
k-eff (implicit)  = 0.83579 +/- 0.00099  [0.83385  0.83773]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   45 / 100  Source neutrons :  4905

Running time :                  0:00:29
Estimated running time :        0:00:56
Estimated running time left :   0:00:26

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83372 +/- 0.00223  [0.82935  0.83809]
k-eff (implicit)  = 0.83596 +/- 0.00098  [0.83403  0.83788]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   46 / 100  Source neutrons :  5179

Running time :                  0:00:30
Estimated running time :        0:00:56
Estimated running time left :   0:00:25

Estimated relative CPU usage :    99.8%

k-eff (analog)    = 0.83386 +/- 0.00218  [0.82958  0.83814]
k-eff (implicit)  = 0.83589 +/- 0.00096  [0.83400  0.83777]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   47 / 100  Source neutrons :  5025

Running time :                  0:00:30
Estimated running time :        0:00:56
Estimated running time left :   0:00:25

Estimated relative CPU usage :   100.2%

k-eff (analog)    = 0.83409 +/- 0.00215  [0.82988  0.83831]
k-eff (implicit)  = 0.83589 +/- 0.00094  [0.83405  0.83774]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   48 / 100  Source neutrons :  4850

Running time :                  0:00:31
Estimated running time :        0:00:56
Estimated running time left :   0:00:24

Estimated relative CPU usage :    99.8%

k-eff (analog)    = 0.83379 +/- 0.00213  [0.82962  0.83795]
k-eff (implicit)  = 0.83599 +/- 0.00093  [0.83418  0.83781]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   49 / 100  Source neutrons :  5045

Running time :                  0:00:31
Estimated running time :        0:00:56
Estimated running time left :   0:00:24

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83364 +/- 0.00209  [0.82955  0.83773]
k-eff (implicit)  = 0.83610 +/- 0.00091  [0.83431  0.83789]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   50 / 100  Source neutrons :  5066

Running time :                  0:00:32
Estimated running time :        0:00:56
Estimated running time left :   0:00:23

Estimated relative CPU usage :   100.1%

k-eff (analog)    = 0.83372 +/- 0.00205  [0.82971  0.83773]
k-eff (implicit)  = 0.83618 +/- 0.00090  [0.83442  0.83795]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   51 / 100  Source neutrons :  4939

Running time :                  0:00:32
Estimated running time :        0:00:56
Estimated running time left :   0:00:23

Estimated relative CPU usage :    99.9%

k-eff (analog)    = 0.83359 +/- 0.00201  [0.82965  0.83753]
k-eff (implicit)  = 0.83630 +/- 0.00089  [0.83456  0.83804]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   52 / 100  Source neutrons :  5180

Running time :                  0:00:33
Estimated running time :        0:00:56
Estimated running time left :   0:00:22

Estimated relative CPU usage :   100.1%

k-eff (analog)    = 0.83405 +/- 0.00202  [0.83008  0.83801]
k-eff (implicit)  = 0.83605 +/- 0.00091  [0.83427  0.83783]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   53 / 100  Source neutrons :  4856

Running time :                  0:00:33
Estimated running time :        0:00:56
Estimated running time left :   0:00:22

Estimated relative CPU usage :    99.8%

k-eff (analog)    = 0.83402 +/- 0.00198  [0.83013  0.83791]
k-eff (implicit)  = 0.83618 +/- 0.00090  [0.83442  0.83794]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   54 / 100  Source neutrons :  5027

Running time :                  0:00:34
Estimated running time :        0:00:56
Estimated running time left :   0:00:21

Estimated relative CPU usage :   100.1%

k-eff (analog)    = 0.83407 +/- 0.00195  [0.83025  0.83789]
k-eff (implicit)  = 0.83618 +/- 0.00088  [0.83445  0.83791]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   55 / 100  Source neutrons :  5082

Running time :                  0:00:34
Estimated running time :        0:00:56
Estimated running time left :   0:00:21

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83437 +/- 0.00194  [0.83058  0.83817]
k-eff (implicit)  = 0.83617 +/- 0.00087  [0.83448  0.83787]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   56 / 100  Source neutrons :  4849

Running time :                  0:00:35
Estimated running time :        0:00:56
Estimated running time left :   0:00:20

Estimated relative CPU usage :    99.9%

k-eff (analog)    = 0.83421 +/- 0.00191  [0.83047  0.83795]
k-eff (implicit)  = 0.83630 +/- 0.00086  [0.83461  0.83799]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   57 / 100  Source neutrons :  5115

Running time :                  0:00:35
Estimated running time :        0:00:56
Estimated running time left :   0:00:20

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83438 +/- 0.00188  [0.83069  0.83807]
k-eff (implicit)  = 0.83618 +/- 0.00085  [0.83451  0.83786]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   58 / 100  Source neutrons :  4893

Running time :                  0:00:36
Estimated running time :        0:00:56
Estimated running time left :   0:00:20

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83423 +/- 0.00186  [0.83060  0.83787]
k-eff (implicit)  = 0.83632 +/- 0.00085  [0.83466  0.83799]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   59 / 100  Source neutrons :  5197

Running time :                  0:00:36
Estimated running time :        0:00:56
Estimated running time left :   0:00:19

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83464 +/- 0.00187  [0.83098  0.83831]
k-eff (implicit)  = 0.83625 +/- 0.00084  [0.83461  0.83789]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   60 / 100  Source neutrons :  4624

Running time :                  0:00:37
Estimated running time :        0:00:56
Estimated running time left :   0:00:19

Estimated relative CPU usage :   100.2%

k-eff (analog)    = 0.83396 +/- 0.00196  [0.83012  0.83780]
k-eff (implicit)  = 0.83625 +/- 0.00082  [0.83463  0.83786]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   61 / 100  Source neutrons :  5503

Running time :                  0:00:37
Estimated running time :        0:00:56
Estimated running time left :   0:00:18

Estimated relative CPU usage :   100.1%

k-eff (analog)    = 0.83462 +/- 0.00203  [0.83063  0.83860]
k-eff (implicit)  = 0.83620 +/- 0.00081  [0.83461  0.83779]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   62 / 100  Source neutrons :  4793

Running time :                  0:00:38
Estimated running time :        0:00:56
Estimated running time left :   0:00:18

Estimated relative CPU usage :    99.9%

k-eff (analog)    = 0.83466 +/- 0.00200  [0.83074  0.83859]
k-eff (implicit)  = 0.83607 +/- 0.00081  [0.83449  0.83766]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   63 / 100  Source neutrons :  4918

Running time :                  0:00:38
Estimated running time :        0:00:56
Estimated running time left :   0:00:17

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83449 +/- 0.00198  [0.83062  0.83837]
k-eff (implicit)  = 0.83599 +/- 0.00080  [0.83443  0.83756]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   64 / 100  Source neutrons :  4982

Running time :                  0:00:39
Estimated running time :        0:00:56
Estimated running time left :   0:00:17

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83428 +/- 0.00196  [0.83044  0.83812]
k-eff (implicit)  = 0.83580 +/- 0.00081  [0.83422  0.83739]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   65 / 100  Source neutrons :  5116

Running time :                  0:00:39
Estimated running time :        0:00:56
Estimated running time left :   0:00:16

Estimated relative CPU usage :    99.9%

k-eff (analog)    = 0.83437 +/- 0.00193  [0.83059  0.83815]
k-eff (implicit)  = 0.83583 +/- 0.00080  [0.83427  0.83739]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   66 / 100  Source neutrons :  5128

Running time :                  0:00:40
Estimated running time :        0:00:56
Estimated running time left :   0:00:16

Estimated relative CPU usage :   100.1%

k-eff (analog)    = 0.83478 +/- 0.00194  [0.83097  0.83859]
k-eff (implicit)  = 0.83587 +/- 0.00079  [0.83433  0.83741]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   67 / 100  Source neutrons :  4761

Running time :                  0:00:40
Estimated running time :        0:00:56
Estimated running time left :   0:00:15

Estimated relative CPU usage :    99.8%

k-eff (analog)    = 0.83456 +/- 0.00193  [0.83078  0.83834]
k-eff (implicit)  = 0.83598 +/- 0.00078  [0.83445  0.83752]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   68 / 100  Source neutrons :  5111

Running time :                  0:00:41
Estimated running time :        0:00:56
Estimated running time left :   0:00:15

Estimated relative CPU usage :   100.1%

k-eff (analog)    = 0.83462 +/- 0.00190  [0.83090  0.83834]
k-eff (implicit)  = 0.83594 +/- 0.00077  [0.83443  0.83745]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   69 / 100  Source neutrons :  4847

Running time :                  0:00:41
Estimated running time :        0:00:56
Estimated running time left :   0:00:14

Estimated relative CPU usage :   100.1%

k-eff (analog)    = 0.83430 +/- 0.00190  [0.83058  0.83802]
k-eff (implicit)  = 0.83580 +/- 0.00077  [0.83428  0.83731]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   70 / 100  Source neutrons :  4969

Running time :                  0:00:42
Estimated running time :        0:00:56
Estimated running time left :   0:00:14

Estimated relative CPU usage :   100.1%

k-eff (analog)    = 0.83392 +/- 0.00191  [0.83018  0.83766]
k-eff (implicit)  = 0.83579 +/- 0.00076  [0.83429  0.83729]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   71 / 100  Source neutrons :  5016

Running time :                  0:00:42
Estimated running time :        0:00:56
Estimated running time left :   0:00:13

Estimated relative CPU usage :   100.1%

k-eff (analog)    = 0.83359 +/- 0.00191  [0.82985  0.83734]
k-eff (implicit)  = 0.83582 +/- 0.00075  [0.83434  0.83729]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   72 / 100  Source neutrons :  5205

Running time :                  0:00:43
Estimated running time :        0:00:56
Estimated running time left :   0:00:13

Estimated relative CPU usage :   100.1%

k-eff (analog)    = 0.83373 +/- 0.00189  [0.83003  0.83743]
k-eff (implicit)  = 0.83592 +/- 0.00075  [0.83445  0.83739]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   73 / 100  Source neutrons :  4941

Running time :                  0:00:43
Estimated running time :        0:00:56
Estimated running time left :   0:00:12

Estimated relative CPU usage :    99.9%

k-eff (analog)    = 0.83373 +/- 0.00186  [0.83008  0.83738]
k-eff (implicit)  = 0.83596 +/- 0.00074  [0.83451  0.83741]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   74 / 100  Source neutrons :  5002

Running time :                  0:00:44
Estimated running time :        0:00:56
Estimated running time left :   0:00:12

Estimated relative CPU usage :   100.1%

k-eff (analog)    = 0.83373 +/- 0.00184  [0.83013  0.83733]
k-eff (implicit)  = 0.83591 +/- 0.00073  [0.83448  0.83734]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   75 / 100  Source neutrons :  4799

Running time :                  0:00:44
Estimated running time :        0:00:56
Estimated running time left :   0:00:12

Estimated relative CPU usage :   100.2%

k-eff (analog)    = 0.83329 +/- 0.00187  [0.82963  0.83695]
k-eff (implicit)  = 0.83586 +/- 0.00072  [0.83444  0.83727]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   76 / 100  Source neutrons :  5185

Running time :                  0:00:44
Estimated running time :        0:00:56
Estimated running time left :   0:00:11

Estimated relative CPU usage :   100.1%

k-eff (analog)    = 0.83325 +/- 0.00184  [0.82963  0.83686]
k-eff (implicit)  = 0.83581 +/- 0.00072  [0.83440  0.83721]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   77 / 100  Source neutrons :  4926

Running time :                  0:00:45
Estimated running time :        0:00:56
Estimated running time left :   0:00:11

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83304 +/- 0.00183  [0.82946  0.83663]
k-eff (implicit)  = 0.83581 +/- 0.00071  [0.83443  0.83720]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   78 / 100  Source neutrons :  5179

Running time :                  0:00:46
Estimated running time :        0:00:56
Estimated running time left :   0:00:10

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83322 +/- 0.00181  [0.82967  0.83678]
k-eff (implicit)  = 0.83586 +/- 0.00070  [0.83449  0.83723]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   79 / 100  Source neutrons :  5049

Running time :                  0:00:46
Estimated running time :        0:00:56
Estimated running time left :   0:00:10

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83350 +/- 0.00181  [0.82995  0.83706]
k-eff (implicit)  = 0.83596 +/- 0.00070  [0.83459  0.83733]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   80 / 100  Source neutrons :  4773

Running time :                  0:00:46
Estimated running time :        0:00:56
Estimated running time left :   0:00:09

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83329 +/- 0.00180  [0.82976  0.83683]
k-eff (implicit)  = 0.83597 +/- 0.00069  [0.83462  0.83732]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   81 / 100  Source neutrons :  5126

Running time :                  0:00:47
Estimated running time :        0:00:56
Estimated running time left :   0:00:09

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83334 +/- 0.00178  [0.82985  0.83683]
k-eff (implicit)  = 0.83588 +/- 0.00069  [0.83453  0.83722]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   82 / 100  Source neutrons :  5098

Running time :                  0:00:47
Estimated running time :        0:00:56
Estimated running time left :   0:00:08

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83358 +/- 0.00178  [0.83010  0.83707]
k-eff (implicit)  = 0.83601 +/- 0.00069  [0.83466  0.83736]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   83 / 100  Source neutrons :  4867

Running time :                  0:00:48
Estimated running time :        0:00:56
Estimated running time left :   0:00:08

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83355 +/- 0.00176  [0.83011  0.83699]
k-eff (implicit)  = 0.83600 +/- 0.00068  [0.83466  0.83733]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   84 / 100  Source neutrons :  4969

Running time :                  0:00:48
Estimated running time :        0:00:56
Estimated running time left :   0:00:07

Estimated relative CPU usage :    99.9%

k-eff (analog)    = 0.83346 +/- 0.00174  [0.83005  0.83686]
k-eff (implicit)  = 0.83613 +/- 0.00069  [0.83478  0.83747]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   85 / 100  Source neutrons :  5058

Running time :                  0:00:49
Estimated running time :        0:00:56
Estimated running time left :   0:00:07

Estimated relative CPU usage :   100.1%

k-eff (analog)    = 0.83348 +/- 0.00172  [0.83011  0.83684]
k-eff (implicit)  = 0.83619 +/- 0.00068  [0.83486  0.83753]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   86 / 100  Source neutrons :  5142

Running time :                  0:00:49
Estimated running time :        0:00:56
Estimated running time left :   0:00:06

Estimated relative CPU usage :    99.8%

k-eff (analog)    = 0.83377 +/- 0.00172  [0.83040  0.83715]
k-eff (implicit)  = 0.83619 +/- 0.00067  [0.83487  0.83751]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   87 / 100  Source neutrons :  4837

Running time :                  0:00:50
Estimated running time :        0:00:56
Estimated running time left :   0:00:06

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83374 +/- 0.00170  [0.83040  0.83708]
k-eff (implicit)  = 0.83630 +/- 0.00068  [0.83498  0.83762]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   88 / 100  Source neutrons :  5198

Running time :                  0:00:50
Estimated running time :        0:00:56
Estimated running time left :   0:00:05

Estimated relative CPU usage :    99.9%

k-eff (analog)    = 0.83408 +/- 0.00172  [0.83072  0.83745]
k-eff (implicit)  = 0.83625 +/- 0.00067  [0.83494  0.83757]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   89 / 100  Source neutrons :  4715

Running time :                  0:00:51
Estimated running time :        0:00:56
Estimated running time left :   0:00:05

Estimated relative CPU usage :   100.2%

k-eff (analog)    = 0.83386 +/- 0.00171  [0.83051  0.83722]
k-eff (implicit)  = 0.83626 +/- 0.00066  [0.83496  0.83756]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   90 / 100  Source neutrons :  5277

Running time :                  0:00:51
Estimated running time :        0:00:56
Estimated running time left :   0:00:04

Estimated relative CPU usage :   100.1%

k-eff (analog)    = 0.83415 +/- 0.00172  [0.83079  0.83752]
k-eff (implicit)  = 0.83619 +/- 0.00066  [0.83491  0.83748]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   91 / 100  Source neutrons :  4863

Running time :                  0:00:52
Estimated running time :        0:00:56
Estimated running time left :   0:00:04

Estimated relative CPU usage :    99.9%

k-eff (analog)    = 0.83417 +/- 0.00170  [0.83084  0.83750]
k-eff (implicit)  = 0.83621 +/- 0.00065  [0.83493  0.83748]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   92 / 100  Source neutrons :  5102

Running time :                  0:00:52
Estimated running time :        0:00:56
Estimated running time left :   0:00:03

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83438 +/- 0.00169  [0.83106  0.83770]
k-eff (implicit)  = 0.83632 +/- 0.00065  [0.83504  0.83760]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   93 / 100  Source neutrons :  4937

Running time :                  0:00:53
Estimated running time :        0:00:56
Estimated running time left :   0:00:03

Estimated relative CPU usage :    99.9%

k-eff (analog)    = 0.83447 +/- 0.00168  [0.83118  0.83775]
k-eff (implicit)  = 0.83633 +/- 0.00065  [0.83506  0.83759]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   94 / 100  Source neutrons :  5132

Running time :                  0:00:53
Estimated running time :        0:00:56
Estimated running time left :   0:00:02

Estimated relative CPU usage :   100.1%

k-eff (analog)    = 0.83479 +/- 0.00169  [0.83148  0.83810]
k-eff (implicit)  = 0.83634 +/- 0.00064  [0.83509  0.83759]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   95 / 100  Source neutrons :  4673

Running time :                  0:00:54
Estimated running time :        0:00:56
Estimated running time left :   0:00:02

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83451 +/- 0.00169  [0.83119  0.83783]
k-eff (implicit)  = 0.83640 +/- 0.00063  [0.83516  0.83765]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   96 / 100  Source neutrons :  5213

Running time :                  0:00:54
Estimated running time :        0:00:56
Estimated running time left :   0:00:01

Estimated relative CPU usage :    99.9%

k-eff (analog)    = 0.83459 +/- 0.00168  [0.83130  0.83788]
k-eff (implicit)  = 0.83642 +/- 0.00063  [0.83519  0.83765]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   97 / 100  Source neutrons :  4997

Running time :                  0:00:55
Estimated running time :        0:00:56
Estimated running time left :   0:00:01

Estimated relative CPU usage :   100.1%

k-eff (analog)    = 0.83467 +/- 0.00166  [0.83141  0.83793]
k-eff (implicit)  = 0.83641 +/- 0.00062  [0.83519  0.83762]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   98 / 100  Source neutrons :  5052

Running time :                  0:00:55
Estimated running time :        0:00:56
Estimated running time left :   0:00:00

Estimated relative CPU usage :    99.9%

k-eff (analog)    = 0.83484 +/- 0.00165  [0.83159  0.83808]
k-eff (implicit)  = 0.83646 +/- 0.00062  [0.83525  0.83767]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle   99 / 100  Source neutrons :  4908

Running time :                  0:00:56
Estimated running time :        0:00:56
Estimated running time left :   0:00:00

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83484 +/- 0.00164  [0.83163  0.83805]
k-eff (implicit)  = 0.83637 +/- 0.00062  [0.83516  0.83759]

(O4) (OMP=1) 
------------------------------------------------------------
------------------------------------------------------------

Serpent 2.1.29 -- Static criticality source simulation

Input file: "input" 

Active cycle  100 / 100  Source neutrons :  5032

Running time :                  0:00:56
Estimated running time :        0:00:56
Estimated running time left :   0:00:00

Estimated relative CPU usage :   100.0%

k-eff (analog)    = 0.83490 +/- 0.00162  [0.83172  0.83808]
k-eff (implicit)  = 0.83631 +/- 0.00061  [0.83511  0.83752]

(O4) (OMP=1) 
------------------------------------------------------------

Transport cycle completed in 55.6 seconds.

Testing and tinkering

2D Pin-cell model

Overview

Basics

Colors in input correspond to:

  • Comments
  • Control words
  • Name definitions
  • Name references

Input for 2D pin-cell geometry 

% --- Simple 2D PWR pin-cell geometry for Serpent tutorial

/************************
 * Material definitions *
 ************************/

% --- Fuel material (3.0 wt-% enriched uranium dioxide), density 10.1 g/cm3

mat fuel     -10.1
92235.03c    -0.02644492
92238.03c    -0.85505247
 8016.03c    -0.11850261

% --- Cladding material for fuel rod
%     (100 % Zirconium)

mat clad     -6.55
40000.03c    -1.0

% --- Water at 1.0 g/cm3

mat water    -1.0
 1001.03c     2.0
 8016.03c     1.0

/************************
 * Geometry definitions *
 ************************/

% --- Fuel pin structure

pin p1
fuel    0.4025
clad    0.4750
water

% --- Square surface with 1.0 cm side centered at (x,y) = (0,0)

surf s1 sqc 0.0 0.0 0.5

% --- Cell c1 belongs to the base universe 0, is filled with the pin p1
%     and covers everything inside surface s1

cell c1 0 fill p1   -s1

% --- Cell c2 belongs to the base universe 0, is defined as an "outside" cell
%     and covers everything inside surface s1

cell c2 0 outside    s1

/******************
 * Run parameters *
 ******************/

% --- Neutron population

set pop 5000 100 20

% --- Boundary condition (1 = black, 2 = reflective, 3 = periodic)

set bc 2

% --- Geometry plots

plot 3  200  200
plot 3 1000 1000 0.0 -2.5 2.5 -2.5 2.5

Testing and tinkering

2D Assembly model

Overview

Basics

Testing and tinkering

Retrieved from "https://serpent.vtt.fi/mediawiki/index.php?title=Tutorial&oldid=3516"