Generating the steady state source distributions
% --- Asymmetric BWR assembly with Gd-pins -------------------
set title "Peach Bottom 2 from UAM, source generation "
include pins
include geometry
include materials
% --- Reflective boundary condition in XY:
set bc 2 2 1
% --- Neutron population and criticality cycles:
set pop 80000 1000000 200 1.0 100
% --- Geometry plots:
plot 3 1000 1000 0.0
plot 3 1000 1000 0.0 -7.62 7.62 -7.62 7.62
plot 2 500 1500
% --- Total power for normalization:
set power 4.0000e+06
% --- Save source to "./source"-files
set savesrc "./source" 1.00 0.25 1 1 1
% --- Do not generate group constants
set gcu -1
% --- Do not use implicit capture, nxn, or fission
set impl 0 0 0
Time dependent simulation (no reactivity insertion)
% --- Asymmetric BWR assembly with Gd-pins -------------------
set title "Peach Bottom 2 from UAM, time dependent simulation"
include pins
include geometry
include materials
% --- Reflective boundary condition in XY:
set bc 2 2 1
% --- Increase size of precursor buffer
set pbuf 2
% --- Total power for normalization:
set power 4.0000e+06
% --- Set up time structures for simulation and detectors:
% 1 time interval for simulation (no population control)
tme simutime 2 1 0 1 %
% 20 time bins for detector
tme dettime 2 20 0 1
% --- Neutron population:
% 10000 neutrons in 10 batches (1000 neutrons per batch)
set nps 4000000000 800000 simutime
set outp 10
% --- Link source (use point-wise precursor tracking)
set dynsrc "./source" 1
% --- Set up detectors
% --- Neutron population as a function of time
det 1 dr -15 void di dettime
% --- Fission energy deposition as a function of time
det 2 dr -8 void di dettime
% --- Do not generate group constants
set gcu -1
% --- Do not use implicit capture, nxn, or fission
set impl 0 0 0
Additional files
pins
% --- Empty lattice position:
pin 99
cool
% --- Fuel pins
pin 1
fuel4 0.60579
void 0.62103
Zirc2 0.71501
cool
pin 2
fuel3 0.60579
void 0.62103
Zirc2 0.71501
cool
pin 3
fuel3 0.60579
void 0.62103
Zirc2 0.71501
cool
pin 4
fuel2 0.60579
void 0.62103
Zirc2 0.71501
cool
pin 5
fuel2 0.60579
void 0.62103
Zirc2 0.71501
cool
pin 6
fuel2 0.60579
void 0.62103
Zirc2 0.71501
cool
pin 7
fuel3 0.60579
void 0.62103
Zirc2 0.71501
cool
pin 8
fuel2 0.60579
void 0.62103
Zirc2 0.71501
cool
pin 9
fuel1 0.60579
void 0.62103
Zirc2 0.71501
cool
pin 10
fuel1 0.60579
void 0.62103
Zirc2 0.71501
cool
pin 11
fuel1 0.60579
void 0.62103
Zirc2 0.71501
cool
pin 12
fuel1 0.60579
void 0.62103
Zirc2 0.71501
cool
pin 13
fuel2 0.60579
void 0.62103
Zirc2 0.71501
cool
pin 14
fuel5 0.60579
void 0.62103
Zirc2 0.71501
cool
pin 15
fuel1 0.60579
void 0.62103
Zirc2 0.71501
cool
pin 16
fuel1 0.60579
void 0.62103
Zirc2 0.71501
cool
pin 17
fuel5 0.60579
void 0.62103
Zirc2 0.71501
cool
pin 18
fuel1 0.60579
void 0.62103
Zirc2 0.71501
cool
pin 19
fuel1 0.60579
void 0.62103
Zirc2 0.71501
cool
pin 20
fuel1 0.60579
void 0.62103
Zirc2 0.71501
cool
pin 21
fuel1 0.60579
void 0.62103
Zirc2 0.71501
cool
pin 22
fuel1 0.60579
void 0.62103
Zirc2 0.71501
cool
pin 23
fuel5 0.60579
void 0.62103
Zirc2 0.71501
cool
pin 24
fuel1 0.60579
void 0.62103
Zirc2 0.71501
cool
pin 25
fuel1 0.60579
void 0.62103
Zirc2 0.71501
cool
pin 26
fuel1 0.60579
void 0.62103
Zirc2 0.71501
cool
pin 27
fuel2 0.60579
void 0.62103
Zirc2 0.71501
cool
pin 28
fuel2 0.60579
void 0.62103
Zirc2 0.71501
cool
geometry
% --- Assembly lattice definition
lat 100 1 0.23876 0.23876 9 9 1.875
99 99 99 99 99 99 99 99 99
99 1 2 3 4 5 6 7 99
99 2 8 9 10 11 12 13 99
99 3 9 14 15 16 17 18 99
99 4 10 15 19 20 21 22 99
99 5 11 16 20 23 24 25 99
99 6 12 17 21 24 26 27 99
99 7 13 18 22 25 27 28 99
99 99 99 99 99 99 99 99 99
% --- Outer channel (assembly pitch = 15.375):
surf 1 sqc 0.23876 0.23876 6.70306 % *
surf 2 sqc 0.23876 0.23876 6.90626
surf 4 pz -182.88 % Active stack length 365.76 cm
surf 5 pz 182.88 % Active stack length 365.76 cm
surf 9 cuboid -7.62 7.62 -7.62 7.62 -250.0 250.0
% --- Cell definitions:
cell 3 101 fill 100 -1 % Pin lattice
cell 4 101 box 1 % Channel box wall
cell 5 0 fill 101 -2 4 -5 % assembly inside channel box outer wall
cell 6 0 moder 2 4 -5 -9 % Water outside channel box
cell 9 0 moder -4 -9 % bottom reflector
cell 10 0 moder 5 -9 % top reflector
cell 99 0 outside 9 % Outside world
materials
