Development and verification of covariance data generation module in NECP-Atlas

核素 Nuclides	核数据1 Nuclear data 1	核数据2 Nuclear data 2	最大值 Maximum value / %	F范数 Frobenius norm	核素 Nuclides	核数据1 Nuclear data 1	核数据2 Nuclear data 2	最大值 Maximum value / %	F范数 Frobenius norm
U-235	σ_elas	σ_elas	-1.423×10^-4	7.315×10^-7	U-235	σ_γ	σ_γ	-1.226×10^-1	5.150×10^-5
U-235	${\bar{ν}}_{t}$	${\bar{ν}}_{t}$	-6.145×10^-5	5.054×10^-7	U-235	${\bar{ν}}_{t}$	${\bar{ν}}_{p}$	-6.674×10^-5	5.102×10^-7
Pu-239	$\bar{μ}$	$\bar{μ}$	2.373×10^-2	2.398×10^-5	U-235	χ	χ	-2.683×10^-4	6.779×10^-5
O-16	$\bar{μ}$	$\bar{μ}$	-3.728×10^-2	5.414×10^-5	U-238	χ	χ	-1.973×10^-4	7.885×10^-5

Table 2. Calculation results of TMI-1 cell relative uncertainties of infinite multiplication factor based on multi-group covariance

View table

View in Article

Table 2. Calculation results of TMI-1 cell relative uncertainties of infinite multiplication factor based on multi-group covariance

核素及反应道 Nuclides and recations	NJOY21结果 NJOY21 results / %	NECP-Atlas结果 NECP-Atlas results / %	相对偏差 Realative bias / %	核素及反应道 Nuclides and recations	NJOY21结果 NJOY21 results / %	NECP-Atlas结果 NECP-Atlas results / %	相对偏差 Realative bias / %
U-235 σ_elas	1.172×10^-3	1.172×10^-3	0	U-238 σ_elas	1.410×10^-1	1.410×10^-1	-0.001
U-235 σ_inel	1.454×10^-3	1.454×10^-3	0	U-238 σ_inel	1.253×10^-1	1.253×10^-1	0
U-235 σ_2n	2.715×10^-4	2.715×10^-4	0.004	U-238 σ_2n	1.198×10^-2	1.199×10^-2	0.084
U-235 σ_f	7.638×10^-2	7.638×10^-2	0	U-238 σ_f	1.564×10^-2	1.564×10^-2	0
U-235 σ_γ	1.967×10^-1	1.967×10^-1	0	U-238 σ_γ	2.906×10^-1	2.906×10^-1	0.001
U-235 ν	1.251×10^-1	1.251×10^-1	0	U-238 ν	7.336×10^-2	7.336×10^-2	0
H-1 σ_elas	3.278×10^-2	3.278×10^-2	0	O-16 σ_elas	1.996×10^-2	1.996×10^-2	0
H-1 σ_γ	9.495×10^-2	9.495×10^-2	0	O-16 σ_γ	1.998×10^-4	1.998×10^-4	0

Table 3. Comparison of relative uncertainty results based on multi-group covariances and continuous-energy covariances

View table

View in Article

Table 3. Comparison of relative uncertainty results based on multi-group covariances and continuous-energy covariances

Godiva基准题 U-235 Godiva Benchmark U-235				Jezebel基准题 Pu-239 Jezebel Benchmark Pu-239
核素及反应道 Nuclides and recations	多群协方差计算结果 Multi-group covariance calculation results	连续能量协方差计算结果 Continus energy covariance calculation results	相对偏差 Realative bias / %	核素及反应道 Nuclides and recations	多群协方差计算结果 Multi-group covariance calculation results	连续能量协方差计算结果 Continus energy covariance calculation results	相对偏差 Realative bias / %
$σ_{e l a s}$	2.900×10^-3	2.920×10^-3	0.69	$σ_{t}$	1.550×10^-2	1.544×10^-2	-0.39
$ν$	3.990×10^-3	3.995×10^-3	0.01	$σ_{i n e l}$	8.700×10^-3	8.670×10^-3	-0.34
$σ_{γ}$	2.750×10^-3	2.790×10^-3	1.45	$σ_{f}$	9.050×10^-3	9.060×10^-3	0.11
$σ_{f}$	7.880×10^-3	7.880×10^-3	0	$ν$	3.180×10^-3	3.170×10^-3	-0.31

Tools

Get Citation

Copy Citation Text

Yihan HUANG, Tiejun ZU, Liangzhi CAO, Hongchun WU. Development and verification of covariance data generation module in NECP-Atlas[J]. NUCLEAR TECHNIQUES, 2024, 47(7): 070503

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites

Paper Information

Category: Research Articles

Received: Nov. 6, 2023

Accepted: --

Published Online: Aug. 27, 2024

The Author Email: ZU Tiejun (祖铁军)

DOI:10.11889/j.0253-3219.2024.hjs.47.070503

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology