Sensitivity calculations: Difference between revisions
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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.
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.