Upgrades to the Monte Carlo Computational Model of the JS']JSI TRIGA Research Reactor

被引：0

作者：

Pungercic, Anze ^{[1
]}

Radulovic, Vladimir ^{[1
]}

Svajger, Ingrid ^{[1
]}

Snoj, Luka ^{[1
]}

机构：

[1] Jozef Stefan Inst, Reactor Phys Dept, Jamova Cesta 39, Ljubljana 1000, Slovenia

来源：

30TH INTERNATIONAL CONFERENCE NUCLEAR ENERGY FOR NEW EUROPE (NENE 2021) | 2021年

关键词：

NEUTRON-FLUX; VALIDATION; BENCHMARK; MCNP;

D O I：

暂无

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The Monte Carlo computational model of the JSI TRIGA research reactor was upgraded by adding 3D fuel burnup and temperature distribution. The effect of fuel burnup and fuel temperature on the effective multiplication factor has been evaluated at -4324 pcm, -1120 pcm respectively. Changes of neutron spectrum in TRIGA measuring position MP17 were investigated and 3 % increase was observed when burnup was included. Based on the obtained results, fuel burnup and temperature distribution were added to the existing model. Calculations of reaction rates of Au-197(n, gamma)Au-198 and Al-27(n, alpha)Na-24 reactions in the reactor core were compared to experimental data. The agreement improved by 6 % in the calculation/experiment ratio when compared to the existing model with fresh fuel at room temperature. The improvement is a combination of changes in the neutron spectra as well as the normalization factor.

引用

页数：8

共 17 条

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