Benchmark Evaluation of one Dimensional Array of HEU Moderated and Reflected by Lucite [Poster]
- Jozef Stefan Inst. (IJS), Ljubljana (Slovenia)
- Jozef Stefan Inst. (IJS), Ljubljana (Slovenia); Univ. of Ljubljana (Slovenia)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Two critical experiments with HEU-Lucite were performed using the Planet Universal Critical Assembly Machine at Los Alamos National Laboratory in 2019. HEU foils were interleaved with Lucite in a column stack for moderation and reflection from the square Lucite plates. The evaluation of the experiments is presented. A Monte-Carlo (MCNP6) calculation model was developed for the determination of uncertainties and their effect on the multiplication factor. Experimental uncertainties were found to be low with the overall uncertainty in keff approximately 240 pcm. The comparison of calculations with experimental data is presented.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP)
- DOE Contract Number:
- 89233218CNA000001
- OSTI ID:
- 1886305
- Country of Publication:
- United States
- Language:
- English
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