Difference between revisions of "Sensitivity calculations"
From Serpent Wiki
(→Adding a perturbation) |
(→Adding a perturbation) |
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'''set''' '''senspert''' ''NAME'' ''FLAG'' | '''set''' '''senspert''' ''NAME'' ''FLAG'' | ||
| + | |||
| + | Where the different perturbation names and flags are as follows | ||
| + | |||
| + | {| class="wikitable" | ||
| + | | <tt>''NAME''</tt> | ||
| + | | explanation of NAME | ||
| + | | <tt>''FLAG''</TT> | ||
| + | | explanation of FLAG | ||
| + | |- | ||
| + | | xs | ||
| + | | perturbation of basic cross sections | ||
| + | | 0/1 | ||
| + | | OFF/ON | ||
| + | |- | ||
| + | | chi | ||
| + | | perturbation of fission spectrum | ||
| + | | 0/1 | ||
| + | | OFF/ON | ||
| + | |- | ||
| + | | nubar | ||
| + | | perturbation of fission nubar | ||
| + | | 0/1 | ||
| + | | OFF/ON | ||
| + | |- | ||
| + | | eleg | ||
| + | | perturbation of Legendre moments of <br />elastic scattering angular distribution | ||
| + | | 0/1/2/3/4/5/6/7 | ||
| + | | Number of Legendre moments to perturb. | ||
| + | |} | ||
=== Additional options === | === Additional options === | ||
Revision as of 12:55, 2 May 2017
Serpent relies on the collision history based first order GPT equivalent implementation (cite to Manu's paper) to calculate sensitivities of various responses to various perturbations. As a simple example, the sensitivity of the effective multiplication factor to the different nuclear cross sections can be calculated.
Contents
Implementation
Input
Adding a response
Adding a perturbation
set senspert NAME FLAG
Where the different perturbation names and flags are as follows
| NAME | explanation of NAME | FLAG | explanation of FLAG |
| xs | perturbation of basic cross sections | 0/1 | OFF/ON |
| chi | perturbation of fission spectrum | 0/1 | OFF/ON |
| nubar | perturbation of fission nubar | 0/1 | OFF/ON |
| eleg | perturbation of Legendre moments of elastic scattering angular distribution |
0/1/2/3/4/5/6/7 | Number of Legendre moments to perturb. |
Additional options
Number of latent generations.
IFP chain length.
Response based tallying or event based tallying.
Event bank.
