Welcome to the Nuclear Reactor Analysis and Methods (NuRAM) website!

Latest News

We had a great time in Pittsburgh for PHYSOR 2022. Great to see so many of our colleagues again and make some new friends. Here’s a picture of us at the poster session!

The NuRAM group at the PHYSOR 2022 Poster Session
Left to Right: Dr. Yuxuan Liu, Dr. Qicang Shen, Thomas Folk, Dean Price, Prof. Brendan Kochunas, Dr. Shai Kinast, Jin Li, and Dr. Sooyoung Choi.

I’m really proud of all our students and staff who presented at the conference. Below is a list of our papers with links to the PDFs on the ANS Website

Recent Publications

For your reading pleasure, here are some of our recent publications. We update this about once a year, so be sure to check back!

  1. D. Price, M. Radaideh, B. Kochunas, “Multiobjective optimization of nuclear microreactor reactivity control system operation with swarm and evolutionary algorithms,” Nuclear Engineering Design, vol. 393, 111776, Jul. 2022, doi: 10.1016/j.nucengdes.2022.111776
  2. D. Price, S. Kinast, K. Barr, B. Kochunas, C. Filippone, “A perturbation-based hybrid methodology for control drum worth prediction applied to the HOLOS-Quad microreactor concept,” Annals of Nuclear Energy, vol. 168, 108903, Apr. 2022, doi: 10.1016/j.anucene.2021.108903
  3. D. Price and B. Kochunas, “Performing linear regression with responses calculated using Monte Carlo transport codes,” Nuclear Engineering and Technology, vol. 44, no. 5, pp. 1902-1908, May 2022, doi: 10.1016/j.net.2021.11.003.
  4. Z. Dodson, B. Kochunas, and E. Larsen, “The Stability of Linear Diffusion Acceleration Relative to CMFD,” Journal of Nuclear Engineering, vol. 2, no. 4, pp. 336–344, Sep. 2021, doi: 10.3390/jne2040027.
  5. B. Kochunas and X. Huan, “Digital Twin Concepts with Uncertainty for Nuclear Power Applications,” Energies, vol. 14, no. 14, p. 4235, Jul. 2021, doi: 10.3390/en14144235. K. E. Barr, S. Choi, J. Kang, and B. Kochunas, “Verification of MPACT for the APR1400 Benchmark,” Energies, vol. 14, no. 13, p. 3831, Jun. 2021, doi: 10.3390/en14133831.

and be sure to checkout Zack’s dissertation: https://dx.doi.org/10.7302/2943

Virtual Tour

Watch the virtual tour of Prof. Kochunas’s Lab and the Nuclear Plant Simulator Laboratory:

(Note that we’ve moved to nicer offices, so our video is out of date at the moment. I hope to update this summer!


There are two main areas of research for the NuRAM group. First, Prof. Downar, with several students, have developed and maintained the PARCS Nodal Simulator since 1996. PARCS is the primary neutronics auditing tool use by the US Nuclear Regulator Commission for reactor licensing and evaluation. More information can be found on the PARCS page. The second area of research is centered around MPACT. MPACT is an advanced, full core, 3D, transport solver. Originally developed by Prof. Kochunas for PWR analysis. MPACT is developed by several students and staff between University of Michigan and Oak Ridge National Laboratory.

We are adding content as time permits, but we hope this page will be useful. NuRAM is lead by Prof. Brendan Kochunas (and Prof. Tom Downar–who is transitioning to retirement).

Recent Updates to the Site

  • Zack Dodson’s dissertation!
  • Links to our PHYSOR 2022 papers
  • Updated journal articles

Coming soon…

We hope to add some content along the following lines soon.

  • Technical Reports
  • More details on projects…
  • More details on courses…
  • More details on people