NECP-Atlas中屏蔽数据库制作模块的开发与验证

祖铁军; 徐宁; 曹良志; 吴宏春

doi:10.13832/j.jnpe.2022.03.0015

NECP-Atlas中屏蔽数据库制作模块的开发与验证

doi: 10.13832/j.jnpe.2022.03.0015

西安交通大学核科学与技术学院，西安，710049

基金项目: 国家自然科学基金（12075183）

详细信息

作者简介:
祖铁军（1984—），男，副教授，现主要从事反应堆物理计算研究，E-mail: tiejun@mail.xjtu.edu.cn

中图分类号: TL325
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- 文章访问数: 660
- HTML全文浏览量: 71
- PDF下载量: 44
- 被引次数: 0
出版历程
- 收稿日期: 2021-03-09
- 录用日期: 2021-09-07
- 修回日期: 2021-05-26
- 刊出日期: 2022-06-07

Development and Verification of Shielding Database Generation Module in NECP-Atlas

School of Nuclear Science and Technology, Xi’an Jiaotong University, Xi’an, 710049, China

摘要

摘要: 在核数据处理程序NECP-Atlas中开发了屏蔽数据库制作模块Shield_calc，该模块先利用NECP-Atlas产生问题无关的MATXS格式细群中子、光子截面数据库；然后采用超细群方法、Bondarenko迭代方法进行共振自屏计算，获得有效自屏截面；最后，基于1维反应堆模型采用NECP-Hydra进行输运计算获得应用堆型的典型权重谱，将细群屏蔽数据库归并为宽群屏蔽数据库NECL-SHILED。利用Shield_calc模块，基于与BUGLE-B7相同的评价核数据库ENDF/B-Ⅶ.0，制作了47群中子、20群光子的NECL-SHILED，并与BUGLE-B7进行了对比，数值结果显示NECL-SHILD与BUGLE-B7计算结果吻合较好，验证了Shield_calc模块具有较高的精度。
- 屏蔽数据库 /
- 核数据处理 /
- BUGLE-B7 /
- NECP-Atlas /
- NECL-SHILED
Abstract: The shielding database generation module Shield_calc is developed in the nuclear data processing program NECP-Atlas. This module firstly uses NECP-Atlas to generate a database of fine-group neutron and photon cross sections in MATXS format which is irrelevant to the problem; then uses the ultrafine group method and Bondarenko iterative method to perform resonance self-shielding calculation to obtain effective self-shielding cross-sections; Finally, based on the one-dimensional reactor model, NECP-Hydraa is used for transportation calculation to obtain the typical weight spectrum of the applied reactor type, and the fine-group shielding database is merged into the wide-group shielding database NECL-SHILED. Using Shield_calc module, based on the same evaluation nuclear database ENDF/B-Ⅶ.0 as BUGLE-B7, NECL-SHILED with 47 groups of neutrons and 20 groups of photons is generated and compared with BUGLE-B7. The numerical results show that the calculation results of NECL-SHILD and BUGLE-B7 are in good agreement, which verifies that the Shield_calc module has high accuracy.
- Shielding database /
- Nuclear data processing /
- BUGLE-B7 /
- NECP-Atlas /
- NECL-SHILED

HTML全文

图 1 中子-光子耦合MATXS数据库制作流程

Figure 1. Procedure for Generating Neutron-Photon Coupled MATXS Database

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图 2 1维典型压水堆模型

Figure 2. 1-D Typical PWR Model

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图 3 ¹⁰³Rh(n, n′)探测器C/E

Figure 3. ¹⁰³Rh(n, n′) Detector C/E

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图 4 ¹¹⁵In(n, n′)探测器C/E

Figure 4. ¹¹⁵In(n, n′) Detector C/E

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图 5 ³²S(n, p)反应探测器C/E

Figure 5. ³²S(n, p) Reaction Detector C/E

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图 6 辐照监督管处不同探测器反应率C/E

Figure 6. Response Rate C/E of Different Detectors at the Irradiation Monitoring Tube

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图 7 中子计量仪处不同探测器反应率C/E

Figure 7. Response Rate C/E of Different Detectors at the Neutron Meter

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图 8 ¹¹⁵In(n, n′)探测器C/E

Figure 8. ¹¹⁵In(n, n′) Detector C/E

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图 9 ⁵⁸Ni(n, p)探测器C/E

Figure 9. ⁵⁸Ni(n, p) Detector C/E

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图 10 ²⁷Al(n, a)探测器C/E

Figure 10. ²⁷Al(n, a) Detector C/E

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表 1 ICSBEP热谱临界基准题k_eff计算结果

Table 1. Calculation Results of Thermal Spectrum Critical Benchmark k_eff in ICSBEP

热谱基准题	k_eff		相对偏差/pcm	k_eff^[1]		相对偏差/pcm
热谱基准题	MCNP5	本文细群库	相对偏差/pcm	KENO	VITAMIN-B7	相对偏差/pcm
HEU-SOL-THERM-013,case1	0.99828	0.99968	140	0.9980	0.9987	70
HEU-SOL-THERM-013,case2	0.99748	0.99857	109	0.9973	0.9978	50
HEU-SOL-THERM-013,case3	0.99444	0.99493	49	0.9940	0.9944	40
HEU-SOL-THERM-013,case4	0.99560	0.99648	87	0.9955	0.9961	60
HEU-SOL-THERM-032	0.99930	1.00135	205	0.9992	1.0001	90
PU-SOL-THERM-011,case16-5	1.00643	1.00581	-62	1.0037	1.0066	290
PU-SOL-THERM-011,case18-1	0.99437	0.99429	-8	0.9936	0.9946	100
PU-SOL-THERM-011,case18-6	1.00039	0.99977	-62	0.9990	1.0007	170
PU-SOL-THERM-004,case1	1.00544	1.00523	-21	1.0038	1.0044	60
平均相对偏差	—	—	101	—	—	128
“—”表示无数值，下同

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表 2 ICSBEP快谱临界基准题k_eff计算结果

Table 2. Calculation Results of Fast Spectrum Critical Benchmark k_eff in ICSBEP

快谱基准题	k_eff		相对偏差/pcm	k_eff^[1]		相对偏差/pcm
快谱基准题	MCNP5	本文细群库	相对偏差/pcm	KENO	VITAMIN-B7	相对偏差/pcm
PU-MET-FAST-001	1.00084	1.00047	−37	0.9991	1.0003	120
PU-MET-FAST-002	1.00000	0.99989	−11	0.9996	1.0005	90
PU-MET-FAST-006	1.00100	1.00107	7	1.0009	1.0028	190
U233-MET-FAST-001	0.99984	1.00045	61	0.9993	0.9994	10
U233-MET-FAST-005,Case1	0.99423	0.99566	143	0.9924	0.9931	70
U233-MET-FAST-005,Case2	0.99260	0.99427	166	0.9902	0.9907	50
HEU-MET-FAST-001,Case1	0.99966	0.99991	25	0.9999	1.0007	80
HEU-MET-FAST-001,Case2	0.99968	0.99996	28	0.9996	1.0005	90
HEU-MET-FAST-028	1.00273	1.00366	93	1.0029	1.0055	260
平均相对偏差	—	—	84	—	—	128

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