Search found 562 matches

by Ana Jambrina
Tue Oct 26, 2021 10:55 am
Forum: Users
Topic: example input files of photon physics in Serpent
Replies: 1
Views: 5

Re: example input files of photon physics in Serpent

From the Wiki, the Radioactive decay source, practical example, is composed of the production of decay source from a burnup calculation and the photon transport simulation using radioactive decay source.
by Ana Jambrina
Mon Oct 25, 2021 8:58 pm
Forum: Users
Topic: How to input volumes for 2D 1/8 assembly model?
Replies: 2
Views: 30

Re: How to input volumes for 2D 1/8 assembly model?

Changes in version 2.1.32 related to the calculation of the average nuclide densities for micro-depletion (see: https://ttuki.vtt.fi/serpent/viewtopic.php?f=23&t=3689#p11908) make it necessary to include the volume of the homogenized zone to determine the ratio between fuel volume to the volume of t...
by Ana Jambrina
Fri Oct 22, 2021 4:48 pm
Forum: Bugs, problems, questions & feeback
Topic: Problem with "dep acttot"
Replies: 6
Views: 84

Re: Problem with "dep acttot"

The radioactive neutron decay source is available from version 2.1.29 on. Note: if you are obtaining the ‘_nsrc.m’ file, it means you are running Serpent 2.1.32, and therefore, that the radioactive neutron decay source is implemented (also, you did not get an error message when you set it up). - Che...
by Ana Jambrina
Thu Oct 21, 2021 8:19 pm
Forum: Users
Topic: depmtx output
Replies: 7
Views: 120

Re: depmtx output

You can check yourself: the Bateman equations solution either from TTA or CRAM/MatrixExponential is evaluated in ‘burnmaterials.c’ routine, 'N0'/'N', for both non-continuous reprocessing (BurnMaterials0) and continuous reprocessing (BurnMaterialsMSR) systems.
by Ana Jambrina
Thu Oct 21, 2021 2:46 pm
Forum: Users
Topic: photon physics in Serpent
Replies: 8
Views: 81

Re: photon physics in Serpent

alexey28 wrote:
Thu Oct 21, 2021 2:39 pm
This link does not work http://montecarlo.vtt.fi/download/photon_data.zip
The 'photon_data' folder downloads from the link.
by Ana Jambrina
Thu Oct 21, 2021 2:05 pm
Forum: Users
Topic: photon physics in Serpent
Replies: 8
Views: 81

Re: photon physics in Serpent

No, you have to convert the MCNP-format '.xsdir' to the Serpent-format '.xsdata'. In the same directory you should have the mcplib63 and mcplib84 files (photon data libraries), plus the '.xsdir' file (i.e. xsdir-mcp5-1.51-new.txt, from the link), and the 'xsdirconvert.pl' perl script (the 'xsdirconv...
by Ana Jambrina
Thu Oct 21, 2021 1:34 pm
Forum: Users
Topic: photon physics in Serpent
Replies: 8
Views: 81

Re: photon physics in Serpent

Check the topic: viewtopic.php?f=26&t=1838, which provides the link of photon_data and additional photon data libraries from MCNP (mcnplib84 and mcnplib63) - as well as xsdir file (data is found under date 2012-01-06).
by Ana Jambrina
Thu Oct 21, 2021 12:21 pm
Forum: Users
Topic: depmtx output
Replies: 7
Views: 120

Re: depmtx output

Not necessarily - maybe setting up some additional print-out statements would help you identify what is going on.
by Ana Jambrina
Thu Oct 21, 2021 11:49 am
Forum: Users
Topic: depmtx output
Replies: 7
Views: 120

Re: depmtx output

The topic is not going to provide much info anyway. Thinking about keeping certain compositions constant, might it be an option to adjust them between burnup steps (without changing the source - manual/automatic restart)?
by Ana Jambrina
Wed Oct 20, 2021 11:46 pm
Forum: Methods
Topic: fatal error
Replies: 13
Views: 102

Re: fatal error

Detectors provide flux/current or response/reaction rate estimates integrated over space, energy and direction (and time) domains. - Check Serpent units at Definitions, units and constants.