# Calculating Neutron Thermal Flux Spectrum in TRIGA Reactor

**URL:** <https://openmc.discourse.group/t/calculating-neutron-thermal-flux-spectrum-in-triga-reactor/6134>\
**Category:** User Support\
**Created:** [December 8, 2025, 12:12pm UTC](https://openmc.discourse.group/t/calculating-neutron-thermal-flux-spectrum-in-triga-reactor/6134 "2025-12-08T12:12:44Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![fakhar](https://yyz2.discourse-cdn.com/free1/user_avatar/openmc.discourse.group/fakhar/32/4224_2.png) [@fakhar](https://openmc.discourse.group/u/fakhar)\
**Post date:** [December 8, 2025, 12:12pm UTC](https://openmc.discourse.group/t/calculating-neutron-thermal-flux-spectrum-in-triga-reactor/6134/1 "2025-12-08T12:12:44Z")

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I am a beginner user of OpenMC and am modeling a TRIGA reactor. Could you please advise me on how to set up the calculation and post-process the data to obtain and plot the neutron thermal flux spectrum

> **[Jupyter Notebook Viewer](https://nbviewer.org/github/mit-crpg/openmc-reactor-examples/blob/main/TRIGA.ipynb)**