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Due to the lack of available spallation neutron source, the atmospheric neutron single event effect (SEE) in China were studied mainly by means of simulation and single energy neutron test. Since the Chinese spallation neutron source (CSNS) passed the national acceptance, it has become possible to carry out the research on atmospheric neutron SEE by using the CSNS. In this paper, the neutron SEE experiments of 3 kinds of SRAMs with different feature sizes are carried out for the first time by using the CSNS back-n. The application of CSNS back-n in the study of atmospheric neutron SEE is evaluated by comparing with the results of the earlier plateau experiment. The results show that the cross section of the single event upset is smaller than that of the plateau test, and the cross sections of different devices have no obvious monotonic relationship with feature size. The reason for the former result is that the energy spectrum of CSNS back-n is slightly softer than that of the atmospheric neutron. The reason for the second result is that small feature size means small critical charge and small sensitive volume, and these two factors compete with each other when they make the contribution to the cross section. According to the difference in energy spectrum and cross section among the SRAM devices, a correction factor is proposed to correct the test results based on CSNS back-n. For the difference in energy spectrum, different energy thresholds will produce different ratios between the cross sections by using CSNS back-n and atmospheric neutron. The neutrons of CSNS back-n are mainly concentrated around 1 MeV, which is close to the energy threshold of general SRAM devices. Thus, inaccurate energy threshold estimation will introduce a large error into the cross section of SEU. Thus, the relation between the correction factor and the energy threshold is analyzed. If 12 MeV is selected as the energy threshold to calculate the cross section, more consistent results could be obtained for our DUT in CSNS back-n and atmospheric neutron environment. In a word, the results show that the CSNS back-n can be used to speed up the atmospheric neutron SEE test, but the result should be corrected to evaluate the threat from atmospheric neutron. Fortunately, with the continuous increase of CSNS operating power, the neutron flux and the accelerated factor of CSNS will increase synchronously. Besides, other 3 white light neutron beams are planned in the CSNS project, the planned energy spectra are closer to those of atmospheric neutron. It is expected that the CSNS will be better applied to the study of atmospheric neutron SEE.
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Keywords:
- atmospheric neutron /
- single event effect /
- Chinese spallation neutron source /
- CSNS back-n
[1] Abe S, Watanabe Y 2014 IEEE Trans. Nucl. Sci. 61 3519
Google Scholar
[2] Normand E 1996 IEEE Trans. Nucl. Sci. 43 461
Google Scholar
[3] Hubert G, Bezerra F, Nicot J M, Artola L, Cheminet A, Valdivia J N, Mouret J M, Meyer J R, Cocquerez P 2014 IEEE Trans. Nucl. Sci. 61 1703
Google Scholar
[4] Normand E 1996 IEEE Trans. Nucl. Sci. 43 2742
Google Scholar
[5] Quinn H, Graham P, Manuzzato A, Fairbanks T, Dallmann N, DesGeorges R 2010 IEEE Trans. Nucl. Sci. 57 3547
[6] Dyer C, Hands A, Ryden K, Lei F 2018 IEEE Trans. Nucl. Sci. 65 432
Google Scholar
[7] Taber A, Normand E 1993 IEEE Trans. Nucl. Sci. 40 120
Google Scholar
[8] Olsen J, Becher P E, Fynbo P B, Raaby P, Schultz J 1993 IEEE Trans. Nucl. Sci. 40 74
Google Scholar
[9] Normand E, Baker T J 1993 IEEE Trans. Nucl. Sci. 40 1484
Google Scholar
[10] Normand E 2001 IEEE Trans. Nucl. Sci. 48 1996
Google Scholar
[11] Flament O, Baggio J, D’hose C, Gasiot G, Leray J L 2004 IEEE Trans. Nucl. Sci. 51 2908
Google Scholar
[12] Lambert D, Baggio J, Hubert G 2006 IEEE Trans. Nucl. Sci. 53 1890
Google Scholar
[13] Hands A, Morris P, Dyer C, Ryden K, Truscott P 2011 IEEE Trans. Nucl. Sci. 58 952
Google Scholar
[14] Autran J L, Roche P, Borel J, Sudre C, Karine C, Munteanu D, Parrassin T, Gasiot G, Schoellkopf J P 2007 IEEE Trans. Nucl. Sci. 54 1002
Google Scholar
[15] 中村刚史, 马场守, 伊部英治 著 (陈伟, 石绍柱, 宋朝晖, 王晨辉 译) 2015 大气中子在先进存储器件中引起的软错误 (北京: 国防工业出版社) 第94—119页
Takashi N, Mamoru B, Eishi I (translated by Chen W, Shi S Z, Song Z H, Wang C H ) 2015 Terrestrial Neutron-Induced Soft Errors in Advanced Memory Devices (Beijing: National Defense Industry Press) pp 94−119 (in Chinese)
[16] Dyer C S, Clucas S N, Sanderson C, Frydland A D, Green R T 2004 IEEE Trans. Nucl. Sci. 51 2817
Google Scholar
[17] Weulersse C, Guibbaud N, Beltrando A L, Galinat J, Beltrando C, Miller F, Trochet P, Alexandrescu D 2017 IEEE Trans. Nucl. Sci. 64 2268
[18] 张利英, 倪伟俊, 敬罕涛, 王相綦 2018 现代应用物理 9 010201
Zhang L Y, Ni W J, Jing H T, Wang X Q 2018 Mod. Appl. Phys. 9 010201
[19] 綦蕾, 周燕佩 2018 航空科学技术 29 07
Qi L, Zhou Y P 2018 Aero. Sci. Tech. 29 07
[20] 王群勇, 刘燕芳, 陈宇, 白桦, 阳辉 2011 航空科学技术 4 34
Google Scholar
Wang Q Y, Liu Y F, Chen Y, Bai H, Yang H 2011 Aero. Sci. Tech. 4 34
Google Scholar
[21] 薛海红, 王群勇, 陈冬梅, 陈宇, 阳辉, 李红军 2015 北京航空航天大学学报 41 1894
Xue H H, Wang Q Y, Chen D M, Chen Y, Yang H, Li H J 2015 J. Beijing. Univ. Aero. Astron. 41 1894
[22] 周啸 2018 信息通信 4 79
Google Scholar
Zhou X 2018 Infor. Comm. 4 79
Google Scholar
[23] 张欢, 王思广, 陈伟, 杨善潮 2015 核技术 38 120501
Zhang H, Wang S G, Chen W, Yang S C 2015 Nucl. Tech. 38 120501
[24] 郭晓强, 郭红霞, 王桂珍, 林东生, 陈伟, 白小燕, 杨善潮, 刘岩 2010 原子能科学技术 44 362
Guo X Q, Guo H X, Wang G Z, Lin D S, Chen W, Bai X Y, Yang S C, Liu Y 2010 Atom. Ener. Sci. Tech. 44 362
[25] 于全芝, 胡志良, 殷雯, 梁天骄 2014 中国科学: 物理学 力学 天文学 44 479
Yu Q Z, Hu Z L, Yin W, Liang T J 2014 Sci. Sin.: Phys. Mech. Astron. 44 479
[26] 陈冬梅, 孙旭朋, 钟征宇, 封国强, 白桦, 阳辉, 底桐 2018 航空科学技术 29 67
Chen D M, Sun X P, Zhong Z Y, Feng G Q, Bai H, Yang H, Di T 2018 Aero. Sci. Tech. 29 67
[27] 范辉, 郭刚, 沈东军, 刘建成, 陈红涛, 赵芳, 陈泉, 何安林, 史淑廷, 惠宁, 蔡莉, 王贵良 2015 原子能科学技术 49 171
Google Scholar
Fan H, Guo G, Shen D J, Liu J C, Chen H T, Zhao F, Chen Q, He A L, Shi S T, Hui N, Cai L, Wang G L 2015 Atom. Ener. Sci. Tech. 49 171
Google Scholar
[28] Ni W, Jing H, Zhang L, Ou L 2018 Radiat. Phys. Chem. 152 43
Google Scholar
[29] Jedec 2001 JESD89-measurement and Reporting of alpha particles and terrestrial cosmic ray-induced soft errors in semiconductor devices
[30] IEC 2006 Process management for avionics-atmospheric radiation effects, part 1: Accommodation of atmospheric radiation effects via single event effects within avionic electronic equip-ment: IEC 62396-1
[31] 郭晓强 2009 硕士学位论文(西安: 西北核技术研究所)
Guo X Q 2009 M.S. Thesis (Xi’an: Northwest Institute of Nuclear Technology) (in Chinese)
[32] 杨善超, 齐超, 白晓燕, 李瑞斌, 王晨辉, 李俊霖, 金晓明, 刘岩 2018 第三届全国辐射物理学术交流会 第77页
Yang S C, Qi C, Bai X Y, Li R B, Wang C H, Li J L, Jin X M, Liu Y 2018 The 3th Chinese Conferance on Radiation Physics p77 (in Chinese)
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图 2 CSNS反角白光中子源终端2与羊八井大气中子微分能谱对比
Figure 2. Comparison between the differential neutron energy spectra of CSNS back-n and Yangbajing.
图 3 CSNS反角白光中子源辐照试验布局示意图
Figure 3. Layout of the irradiation experiment at CSNS back-n.
图 4 辐照过程中的器件布局
Figure 4. Layout of the devices under test.
图 5 羊八井大气中子单粒子效应试验 (a)测试场景; (b)测试系统
Figure 5. SEE test in Yangbajing: (a) Test environment; (b) test system.
图 6 CSNS反角白光中子源与羊八井大气中子SEU截面对比
Figure 6. Comparison of the SEU cross section between the tests in CSNS back-n and Yangbajing.
图 7 CSNS反角白光中子源与羊八井大气中子微分能谱对比(大于1 MeV部分)
Figure 7. Comparison between the differential neutron energy spectra of CSNS back-n and Yangbajing (above 1 MeV).
图 8 不同能量阈值相对1 MeV时修正因子的变化关系
Figure 8. Correction factor with different energy threshold compare to 1 MeV.
表 1 大气中子单粒子效应试验中子源
Table 1. Neutron sources for atmospheric neutron SEE experiment.
中子源 中子谱 优点 缺点 相关文献报道 国外 国内 航空高度环境 完全相同 无误差环境 成本高 √ × 地面大气环境 谱形状相同 无误差环境 注量率低耗时长 √ × 散裂中子源 谱形状相似能量范围不同 能谱范围大注量率高 模拟源少 √ × 单能中子源 单能 模拟源多成本低 需要多个能量点 √ √ 
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表 2 待测SRAM器件参数
Table 2. Parameters of the SRAM devices for test.
型号 制造商 容量/bits 特征尺寸/${\text{μ}}{\rm m}$ 工作电压/V HM62V8100 RENESAS 8 M (1 M × 8 bit) 0.18 3 HM628512B HITACHI 4 M (512 K × 8 bit) 0.35 5 HM628512A HITACHI 4 M (512 K × 8 bit) 0.50 5
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表 3 在CSNS反角白光中子源的SEU测试结果
Table 3. Test result of the SEUs in CSNS back-n.
型号 测试图形 总容量/bit 总注量/n·cm–2 有效注量占比/% 翻转数(#) 翻转截面/cm2·bit–1 置信水平/% HM62V8100 0x00H 24M 2.90 × 109 45.73 343 1.02 × 10–14 94.6 0x55H 24M 2.89 × 109 45.73 367 1.10 × 10–14 94.8 0xAAH 24M 2.89 × 109 45.73 387 1.16 × 10–14 94.9 0xFFH 24M 2.93 × 109 45.73 342 1.01 × 10–14 94.6 HM628512B 0x00H 12M 3.12 × 109 45.73 207 1.15 × 10–14 93.0 0x55H 8M 3.84 × 109 45.73 197 1.34 × 10–14 92.9 0xAAH 12M 4.90 × 109 45.73 303 1.07 × 10–14 94.3 0xFFH 12M 1.78 × 109 45.73 114 1.11 × 10–14 90.6 HM628512A 0x00H 12M 3.03 × 109 45.73 176 1.01 × 10–14 92.5 0x55H 12M 3.94 × 109 45.73 262 1.16 × 10–14 93.8 0xAAH 12M 2.94 × 109 45.73 215 1.27 × 10–14 93.2 0xFFH 12M 2.93 × 109 45.73 205 1.22 × 10–14 93.0
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表 4 在羊八井测得的SEU翻转结果
Table 4. Test result of the SEU in Yangbajing.
型号 总容量/bit 测试时长/h 翻转数(#) 翻转率/#·bit–1·h–1 翻转截面/cm2·bit–1 置信水平/% HM62V8100 8M × 573 6085 195 6.67 × 10–12 5.21 × 10–14 98.6 HM628512B 4M × 1221 5198 181 6.80 × 10–12 5.31 × 10–14 98.3 HM628512A 4M × 635 5198 76 5.49 × 10–12 4.29 × 10–14 97.4
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表 5 不同中子环境中中不同能区的中子占比
Table 5. Proportion of different energy bands in different neutron environments.
中子源 中子数占比/% 通量/cm2·s–1 (> 1 MeV) 1—10 MeV 10—100 MeV > 100 MeV JEDEC(地面) 35 35 30 5.56 × 10–3 IEC(12 km) 36.5 37.2 26.3 2.43 × 100 羊八井 35.6 32.1 32.3 3.56 × 10–2 CSNS-back-n @76 81.7 16.8 1.5 7.32 × 105 (20 kW) CSNS-TS1-41° @20 m 50 28 22 — CSNS-TS2-30° 44 28.5 27.5 — CSNS-TS2-15° 22.6 25 52.4 —
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表 6 考虑不同能量阈值时有效注量占比及SRAM器件的翻转截面
Table 6. SEU cross section of SRAMs and percentage of effective neutrons considering different energy threshold.
型号 能量阈值/MeV 有效注量占比/% 翻转截面/cm2·bit–1 CSNS back-n 羊八井 CSNS back-n 羊八井 HM62V8100 0.6 59.23 51.13 8.50 × 10–15 4.70 × 10–14 HM628512B 2.5 26.61 38.02 2.30 × 10–14 6.43 × 10–14 HM628512A 6.0 13.48 32.16 3.94 × 10–14 6.15 × 10–14
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表 7 能量阈值取10, 12和14 MeV时器件对应的修正因子
Table 7. Correction factor for the DUTs with different energy threshold.
型号 不同能量阈值取值时的修正因子 10 MeV 12 MeV 14 MeV HM62V8100 1.33 1.19 1.05 HM628512B 1.12 1.00 0.88 HM628512A 1.04 0.93 0.81
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[1] Abe S, Watanabe Y 2014 IEEE Trans. Nucl. Sci. 61 3519
Google Scholar
[2] Normand E 1996 IEEE Trans. Nucl. Sci. 43 461
Google Scholar
[3] Hubert G, Bezerra F, Nicot J M, Artola L, Cheminet A, Valdivia J N, Mouret J M, Meyer J R, Cocquerez P 2014 IEEE Trans. Nucl. Sci. 61 1703
Google Scholar
[4] Normand E 1996 IEEE Trans. Nucl. Sci. 43 2742
Google Scholar
[5] Quinn H, Graham P, Manuzzato A, Fairbanks T, Dallmann N, DesGeorges R 2010 IEEE Trans. Nucl. Sci. 57 3547
[6] Dyer C, Hands A, Ryden K, Lei F 2018 IEEE Trans. Nucl. Sci. 65 432
Google Scholar
[7] Taber A, Normand E 1993 IEEE Trans. Nucl. Sci. 40 120
Google Scholar
[8] Olsen J, Becher P E, Fynbo P B, Raaby P, Schultz J 1993 IEEE Trans. Nucl. Sci. 40 74
Google Scholar
[9] Normand E, Baker T J 1993 IEEE Trans. Nucl. Sci. 40 1484
Google Scholar
[10] Normand E 2001 IEEE Trans. Nucl. Sci. 48 1996
Google Scholar
[11] Flament O, Baggio J, D’hose C, Gasiot G, Leray J L 2004 IEEE Trans. Nucl. Sci. 51 2908
Google Scholar
[12] Lambert D, Baggio J, Hubert G 2006 IEEE Trans. Nucl. Sci. 53 1890
Google Scholar
[13] Hands A, Morris P, Dyer C, Ryden K, Truscott P 2011 IEEE Trans. Nucl. Sci. 58 952
Google Scholar
[14] Autran J L, Roche P, Borel J, Sudre C, Karine C, Munteanu D, Parrassin T, Gasiot G, Schoellkopf J P 2007 IEEE Trans. Nucl. Sci. 54 1002
Google Scholar
[15] 中村刚史, 马场守, 伊部英治 著 (陈伟, 石绍柱, 宋朝晖, 王晨辉 译) 2015 大气中子在先进存储器件中引起的软错误 (北京: 国防工业出版社) 第94—119页
Takashi N, Mamoru B, Eishi I (translated by Chen W, Shi S Z, Song Z H, Wang C H ) 2015 Terrestrial Neutron-Induced Soft Errors in Advanced Memory Devices (Beijing: National Defense Industry Press) pp 94−119 (in Chinese)
[16] Dyer C S, Clucas S N, Sanderson C, Frydland A D, Green R T 2004 IEEE Trans. Nucl. Sci. 51 2817
Google Scholar
[17] Weulersse C, Guibbaud N, Beltrando A L, Galinat J, Beltrando C, Miller F, Trochet P, Alexandrescu D 2017 IEEE Trans. Nucl. Sci. 64 2268
[18] 张利英, 倪伟俊, 敬罕涛, 王相綦 2018 现代应用物理 9 010201
Zhang L Y, Ni W J, Jing H T, Wang X Q 2018 Mod. Appl. Phys. 9 010201
[19] 綦蕾, 周燕佩 2018 航空科学技术 29 07
Qi L, Zhou Y P 2018 Aero. Sci. Tech. 29 07
[20] 王群勇, 刘燕芳, 陈宇, 白桦, 阳辉 2011 航空科学技术 4 34
Google Scholar
Wang Q Y, Liu Y F, Chen Y, Bai H, Yang H 2011 Aero. Sci. Tech. 4 34
Google Scholar
[21] 薛海红, 王群勇, 陈冬梅, 陈宇, 阳辉, 李红军 2015 北京航空航天大学学报 41 1894
Xue H H, Wang Q Y, Chen D M, Chen Y, Yang H, Li H J 2015 J. Beijing. Univ. Aero. Astron. 41 1894
[22] 周啸 2018 信息通信 4 79
Google Scholar
Zhou X 2018 Infor. Comm. 4 79
Google Scholar
[23] 张欢, 王思广, 陈伟, 杨善潮 2015 核技术 38 120501
Zhang H, Wang S G, Chen W, Yang S C 2015 Nucl. Tech. 38 120501
[24] 郭晓强, 郭红霞, 王桂珍, 林东生, 陈伟, 白小燕, 杨善潮, 刘岩 2010 原子能科学技术 44 362
Guo X Q, Guo H X, Wang G Z, Lin D S, Chen W, Bai X Y, Yang S C, Liu Y 2010 Atom. Ener. Sci. Tech. 44 362
[25] 于全芝, 胡志良, 殷雯, 梁天骄 2014 中国科学: 物理学 力学 天文学 44 479
Yu Q Z, Hu Z L, Yin W, Liang T J 2014 Sci. Sin.: Phys. Mech. Astron. 44 479
[26] 陈冬梅, 孙旭朋, 钟征宇, 封国强, 白桦, 阳辉, 底桐 2018 航空科学技术 29 67
Chen D M, Sun X P, Zhong Z Y, Feng G Q, Bai H, Yang H, Di T 2018 Aero. Sci. Tech. 29 67
[27] 范辉, 郭刚, 沈东军, 刘建成, 陈红涛, 赵芳, 陈泉, 何安林, 史淑廷, 惠宁, 蔡莉, 王贵良 2015 原子能科学技术 49 171
Google Scholar
Fan H, Guo G, Shen D J, Liu J C, Chen H T, Zhao F, Chen Q, He A L, Shi S T, Hui N, Cai L, Wang G L 2015 Atom. Ener. Sci. Tech. 49 171
Google Scholar
[28] Ni W, Jing H, Zhang L, Ou L 2018 Radiat. Phys. Chem. 152 43
Google Scholar
[29] Jedec 2001 JESD89-measurement and Reporting of alpha particles and terrestrial cosmic ray-induced soft errors in semiconductor devices
[30] IEC 2006 Process management for avionics-atmospheric radiation effects, part 1: Accommodation of atmospheric radiation effects via single event effects within avionic electronic equip-ment: IEC 62396-1
[31] 郭晓强 2009 硕士学位论文(西安: 西北核技术研究所)
Guo X Q 2009 M.S. Thesis (Xi’an: Northwest Institute of Nuclear Technology) (in Chinese)
[32] 杨善超, 齐超, 白晓燕, 李瑞斌, 王晨辉, 李俊霖, 金晓明, 刘岩 2018 第三届全国辐射物理学术交流会 第77页
Yang S C, Qi C, Bai X Y, Li R B, Wang C H, Li J L, Jin X M, Liu Y 2018 The 3th Chinese Conferance on Radiation Physics p77 (in Chinese)
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