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The testing mass is the core sensor for measuring the spatial gravitational waves. The high-energy cosmic ray particles penetrating the outer structure of the spacecraft result in the electrical charges on the testing mass. The Coulomb force produced by the charges on the surrounding conducting surface and the Lorentz force generated by the motion through the interplanetary magnetic field will exert a serious influence on the geodesic motion of the testing mass. In this paper are investigated the process and mechanism of charging the testing mass by high-energy particles from different cosmic rays through using the Monte Carlo simulation method. It is concluded that the charging rate gradually increases with the decrease of cut-off energy under the same energy spectrum. The positive charging rate (elementary charges per second) in the years of minimum solar activity is predicted to be 39.5 +e/s, and the protons account for approximately 83.16% of the total quantity of galactic cosmic rays. The positive charging rate of the testing mass during the years of maximum solar activity is about 12.5 +e/s, and the charging rate of the testing mass of the worst solar energetic particle event in 1989 is about 120700 +e/s. The charging rate of the components of the galactic cosmic ray depends on the deposition of primary particles of each component in the testing mass during the years of minimum solar activity, with primary particles accounting for 73% of the total charging rate. The charging contribution of protons in years of minimum solar activity is mainly in an energy range of 0.1–1 GeV, accounting for about 65%. The research results can be used to assess the charging patterns of test quality on-orbit charges and provide a basis for designing the charge management and on-orbit work.
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Keywords:
- gravitational waves /
- test mass /
- cosmic rays /
- GEANT4
[1] Sathyaprakash B S, Schutz B F 2009 Living Rev. Relativ. 12 1Google Scholar
[2] 雷中华, 兰明建, 汪先友, 李建杰 2008 物理学报 57 7408Google Scholar
Lei Z H, Lan M J, Wang X Y, Li J J 2008 Acta Phys. Sin. 57 7408Google Scholar
[3] Jafry Y, Sumner T J, Buchman S 1996 Classical Quantum Gravity 13 A97Google Scholar
[4] Jafry Y, Sumner T J 1997 Classical Quantum Gravity 14 1567Google Scholar
[5] Sumner T J, Jafry Y 2000 Adv. Space Res. 25 1219Google Scholar
[6] Araújo H M, Howard A, Shaul D, Sumner T J 2003 Classical Quantum Gravity 20 S311Google Scholar
[7] Shaul D N A, Sumner T J, Araújo H M, Rochester G K, Wass P J, Lee C G Y 2004 Classical Quantum Gravity 21 S647Google Scholar
[8] Sumner T, Araújo H, Davidge D, Howard A, Lee C, Rochester G, Shaul D, Wass P 2004 Classical Quantum Gravity 21 S597Google Scholar
[9] Vocca H, Grimani C, Amico P, Bosi L, Marchesoni F, Punturo M, Travasso F, Barone M, Stanga R, Vetrano F, Viceré A 2004 Classical Quantum Gravity 21 S665Google Scholar
[10] 包纲, 倪维斗, 柳磊, Araújo H, Shaul D, Sumner T 2004 紫金山天文台台刊 23 105
Bao G, Ni W T, Liu L, Araújo H, Shaul D, Sumner T 2004 Publ. Purple Mt. Observatory 23 105
[11] Bao G, Ni W T, Shaul D N A, Araújo H M, Liu L, Sumner T J 2008 Int. J. Mod. Phys. D 17 965Google Scholar
[12] Grimani C, Fabi M, Lobo A, Mateos I, Telloni D 2015 Classical. Quantum Gravity. 32 035001Google Scholar
[13] Wass P J, Araújo H M, Shaul D N A, Sumner T J 2005 Classical. Quantum Gravity. 22 S311Google Scholar
[14] Armano M, Audley H, Auger G, Baird J T, Binetruy P, Born M, Bortoluzzi D, Brandt N, Bursi A, Caleno M, Cavalleri A, Cesarini A, Cruise M, Danzmann K, Silva M, Diepholz I, Dolesi R, Dunbar N, Ferraioli L, Ferroni V, Fitzsimons E D, Flatscher R, Freschi M, Gallegos J, Marirrodriga C, Gerndt R, Gesa L, Gibert F, Giardini D, Giusteri R, Grimani C, Grzymisch J, Harrison I, Heinzel G, Hewitson M, Hollington D, Hueller M, Huesler J, Inchauspé H, Jennrich O, Jetzer P, Johlander B, Karnesis N, Kaune B, Killow C J, Korsakova N, Lloro I, Liu L, López-Zaragoza J P, Maarschalkerweerd R, Madden S, Mance D, Martín V, Martin-Polo L, Martino J, Martin-Porqueras F, Mateos I, McNamara P W, Mendes J, Mendes L, Moroni A, Nofrarias M, Paczkowski S, Perreur-Lloyd M, Petiteau A, Pivato P, Plagnol E, Prat P, Ragnit U, Ramos-Castro J, Reiche J, Perez J A, Robertson D I, Rozemeijer H, Rivas F, Russano G, Sarra P, Schleicher A, Slutsky J, Sopuerta C, Sumner T J, Texier D, Thorpe J I, Trenkel C, Vetrugno D, Vitale S, Wanner G, Ward H, Wass P J, Wealthy D, Weber W J, Wittchen A, Zanoni C, Ziegler T, Zweifel P 2017 Phys. Rev. Lett. 118 171101Google Scholar
[15] Araújo H M, Wass P, Shaul D, Rochester G, Sumner T J 2005 Astropart. Phys. 22 451Google Scholar
[16] 罗子人, 白姗, 边星, 陈葛瑞, 董鹏, 董玉辉, 高伟, 龚雪飞, 贺建武, 李洪银, 李向前, 李玉琼, 刘河山, 邵明学, 宋同消, 孙保三, 唐文林, 徐鹏, 徐生年, 杨然, 靳刚 2013 力学进展 43 415Google Scholar
Luo Z R, Bai S, Bian X, Chen G R, Dong P, Dong Y H, Gao W, Gong X F, He J W, Li H Y, Li X Q, Li Y Q, Liu S H, Shao M X, Song T X, Sun B S, Tang W L, Xu P, Xu S N, Yang R, Jin G 2013 Adv. Mech. 43 415Google Scholar
[17] Myers Z D, Seo E S, Abe K, Anraku K, Imori M, Maeno T, Makida Y, Matsumoto H, Mitchell J, Moiseev A, Nishimura J, Nozaki M, Ormes J F, Orito S, Sanuki T, Sasaki M, Shikaze Y, Streitmatter R E, Suzuki J, Tanaka K, Yamagami T, Yamamoto A, Yoshida T, Yoshimura K 2003 In International Cosmic Ray Conference Tsukuba, Japan, July 31–August 7, 2003 p1805
[18] Wang J Z, Seo E S, Anraku K, Fujikawa M, Imori M, Maeno T, Matsui N, Matsunaga H, Motoki M, Orito S, Saeki T, Sanuki T, Ueda I, Yoshimura K, Makida Y, Suzuki J, Tanaka K, Yamamoto A, Yoshida T, Mitsui T, Matsumoto H, Nozaki M, Sasaki M, Mitchell J, Moiseev A, Ormes J, Streitmatter R, Nishimura J, Yajima Y, Yamagami T 2002 Astrophys. J. 564 244Google Scholar
[19] Casolino M, Santis C D, Simone N D, Formato V, Nikonov N, Picozza P 2011 Astrophys. Space Sci. Trans. 7 465Google Scholar
[20] Abe K, Fuke H, Haino S, Hams T, Hasegawa M, Horikoshi A, Itazaki A, Kim K C, Kumazawa T, Kusumoto A, Lee M H, Makida Y, Matsuda S, Matsukawa Y, Matsumoto K, Mitchell J W, Moiseev A A, Nishimura J, Nozaki M, Orito R, Ormes J F, Picot-Clémente N, Sakai K, Sasaki M, Seo E S, Shikaze Y, Shinoda R, Streitmatter R E, Suzuki J, Takasugi Y, Takeuchi K, Tanaka K, Thakur N, Yamagami T, Yamamoto A, Yoshida T, Yoshimura K 2014 Adv. Space Res. 53 1426Google Scholar
[21] Grimani C, Vocca H, Bagni G, Marconi L, Stanga R, Vetrano F, Viceré A, Amico P, Gammaitoni L, Marchesoni F 2005 Classical. Quantum Gravity. 22 S327Google Scholar
[22] Papini P, Grimani C, Stephens S A 1996 Il Nuovo Cim. C 19 367Google Scholar
[23] Grimani C, Vocca H, Barone M, Stanga R, Vetrano F, Viceré A, Amico P, Bosi L, Marchesoni F, Punturo M, Travasso F 2004 Classical. Quantum Gravity. 21 S629Google Scholar
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表 1 航天器几何尺寸和材料构成
Table 1. Spacecraft geometric dimensions and material composition.
名称 组成成分 密度/(g·cm–3) 尺寸 厚度/mm 测试质量 Au(70%); Pt(30%) 19.837 46 mm立方体 — 钼电极 Mo 10.28 74—86 mm立方体壳层 6 钛室 Ti 4.54 75—80 mm球壳层 5 碳外壳 C 2.10 80—100 mm球壳层 20 表 2 太阳极小年3He/4He的参数化比例C(m)
Table 2. The parameterized ratio C(m) of 3He/4He in solar minimum.
E/(GeV·n–1) 0.10 ≤ E ≤ 0.36 0.36 ≤ E ≤ 1.00 1.00 ≤ E ≤ 1.40 E > 1.40 C(m) 0.335 × E0.569 0.187 0.187 × E0.491 0.22 表 3 太阳极大年3He/4He的参数化比例C(M)
Table 3. The parameterized ratio C(M) of 3He/4He during solar maximum.
E/(GeV·n–1) 0.10 ≤ E ≤ 0.30 0.30 ≤ E ≤ 0.80 0.80 ≤ E ≤ 2.50 E > 2.50 C(M) 0.239 × E0.538 0.125 0.140 × E0.496 0.22 表 4 太阳极小年宇宙线主要粒子仿真参数
Table 4. The main particle simulation parameters of cosmic rays during solar minimum.
粒子种类 粒子数目/个 暴露时间/s 积分通量/(cm–2·s–1) Proton 700000 353.65 4.375 3He 100000 3563.35 0.062 4He 120000 806.26 0.329 C 100000 21052.63 0.0105 N 100000 77561.47 0.00285 O 100000 22128.79 0.00999 Ne 10000 13644.98 0.00162 Mg 10000 10476.25 0.00211 Si 10000 14542.70 0.00152 Fe 10000 19562.20 0.00113 表 5 太阳极大年宇宙线主要粒子仿真参数
Table 5. The main particle simulation parameters of cosmic rays during solar maximum.
粒子种类 粒子数目/个 暴露时间/s 积分通量/(cm–2·s–1) Proton 700000 353.65 4.375 3He 100000 3563.35 0.062 4He 120000 806.26 0.329 表 6 1989年9月29日太阳高能粒子事件仿真参数
Table 6. Simulation parameters of the SEP event on September 29, 1989.
粒子种类 粒子数目/个 暴露时间/s 积分通量/(cm–2·s–1) Proton 500000 0.150 7385.53 表 7 宇宙线初、次级粒子造成的充电率
Table 7. Charge rate caused by primary and secondary particles of cosmic rays.
粒子
种类初级粒子充电
率/(+e·s–1)次级粒子充电
率/(+e·s–1)初级粒子
充电率占比Proton 22.016 10.805 67.07% 3He 1.196 –0.029 100% 4He 5.125 –0.100 100% C 0.182 0.023 88.78% N 0.042 0.009 82.35% O 0.123 0.020 86.01% Ne 0.0132 0.0026 83.54% Mg 0.0137 0.0064 68.16% Si 0.0087 0.0058 60% Fe 0 0.0084 0% -
[1] Sathyaprakash B S, Schutz B F 2009 Living Rev. Relativ. 12 1Google Scholar
[2] 雷中华, 兰明建, 汪先友, 李建杰 2008 物理学报 57 7408Google Scholar
Lei Z H, Lan M J, Wang X Y, Li J J 2008 Acta Phys. Sin. 57 7408Google Scholar
[3] Jafry Y, Sumner T J, Buchman S 1996 Classical Quantum Gravity 13 A97Google Scholar
[4] Jafry Y, Sumner T J 1997 Classical Quantum Gravity 14 1567Google Scholar
[5] Sumner T J, Jafry Y 2000 Adv. Space Res. 25 1219Google Scholar
[6] Araújo H M, Howard A, Shaul D, Sumner T J 2003 Classical Quantum Gravity 20 S311Google Scholar
[7] Shaul D N A, Sumner T J, Araújo H M, Rochester G K, Wass P J, Lee C G Y 2004 Classical Quantum Gravity 21 S647Google Scholar
[8] Sumner T, Araújo H, Davidge D, Howard A, Lee C, Rochester G, Shaul D, Wass P 2004 Classical Quantum Gravity 21 S597Google Scholar
[9] Vocca H, Grimani C, Amico P, Bosi L, Marchesoni F, Punturo M, Travasso F, Barone M, Stanga R, Vetrano F, Viceré A 2004 Classical Quantum Gravity 21 S665Google Scholar
[10] 包纲, 倪维斗, 柳磊, Araújo H, Shaul D, Sumner T 2004 紫金山天文台台刊 23 105
Bao G, Ni W T, Liu L, Araújo H, Shaul D, Sumner T 2004 Publ. Purple Mt. Observatory 23 105
[11] Bao G, Ni W T, Shaul D N A, Araújo H M, Liu L, Sumner T J 2008 Int. J. Mod. Phys. D 17 965Google Scholar
[12] Grimani C, Fabi M, Lobo A, Mateos I, Telloni D 2015 Classical. Quantum Gravity. 32 035001Google Scholar
[13] Wass P J, Araújo H M, Shaul D N A, Sumner T J 2005 Classical. Quantum Gravity. 22 S311Google Scholar
[14] Armano M, Audley H, Auger G, Baird J T, Binetruy P, Born M, Bortoluzzi D, Brandt N, Bursi A, Caleno M, Cavalleri A, Cesarini A, Cruise M, Danzmann K, Silva M, Diepholz I, Dolesi R, Dunbar N, Ferraioli L, Ferroni V, Fitzsimons E D, Flatscher R, Freschi M, Gallegos J, Marirrodriga C, Gerndt R, Gesa L, Gibert F, Giardini D, Giusteri R, Grimani C, Grzymisch J, Harrison I, Heinzel G, Hewitson M, Hollington D, Hueller M, Huesler J, Inchauspé H, Jennrich O, Jetzer P, Johlander B, Karnesis N, Kaune B, Killow C J, Korsakova N, Lloro I, Liu L, López-Zaragoza J P, Maarschalkerweerd R, Madden S, Mance D, Martín V, Martin-Polo L, Martino J, Martin-Porqueras F, Mateos I, McNamara P W, Mendes J, Mendes L, Moroni A, Nofrarias M, Paczkowski S, Perreur-Lloyd M, Petiteau A, Pivato P, Plagnol E, Prat P, Ragnit U, Ramos-Castro J, Reiche J, Perez J A, Robertson D I, Rozemeijer H, Rivas F, Russano G, Sarra P, Schleicher A, Slutsky J, Sopuerta C, Sumner T J, Texier D, Thorpe J I, Trenkel C, Vetrugno D, Vitale S, Wanner G, Ward H, Wass P J, Wealthy D, Weber W J, Wittchen A, Zanoni C, Ziegler T, Zweifel P 2017 Phys. Rev. Lett. 118 171101Google Scholar
[15] Araújo H M, Wass P, Shaul D, Rochester G, Sumner T J 2005 Astropart. Phys. 22 451Google Scholar
[16] 罗子人, 白姗, 边星, 陈葛瑞, 董鹏, 董玉辉, 高伟, 龚雪飞, 贺建武, 李洪银, 李向前, 李玉琼, 刘河山, 邵明学, 宋同消, 孙保三, 唐文林, 徐鹏, 徐生年, 杨然, 靳刚 2013 力学进展 43 415Google Scholar
Luo Z R, Bai S, Bian X, Chen G R, Dong P, Dong Y H, Gao W, Gong X F, He J W, Li H Y, Li X Q, Li Y Q, Liu S H, Shao M X, Song T X, Sun B S, Tang W L, Xu P, Xu S N, Yang R, Jin G 2013 Adv. Mech. 43 415Google Scholar
[17] Myers Z D, Seo E S, Abe K, Anraku K, Imori M, Maeno T, Makida Y, Matsumoto H, Mitchell J, Moiseev A, Nishimura J, Nozaki M, Ormes J F, Orito S, Sanuki T, Sasaki M, Shikaze Y, Streitmatter R E, Suzuki J, Tanaka K, Yamagami T, Yamamoto A, Yoshida T, Yoshimura K 2003 In International Cosmic Ray Conference Tsukuba, Japan, July 31–August 7, 2003 p1805
[18] Wang J Z, Seo E S, Anraku K, Fujikawa M, Imori M, Maeno T, Matsui N, Matsunaga H, Motoki M, Orito S, Saeki T, Sanuki T, Ueda I, Yoshimura K, Makida Y, Suzuki J, Tanaka K, Yamamoto A, Yoshida T, Mitsui T, Matsumoto H, Nozaki M, Sasaki M, Mitchell J, Moiseev A, Ormes J, Streitmatter R, Nishimura J, Yajima Y, Yamagami T 2002 Astrophys. J. 564 244Google Scholar
[19] Casolino M, Santis C D, Simone N D, Formato V, Nikonov N, Picozza P 2011 Astrophys. Space Sci. Trans. 7 465Google Scholar
[20] Abe K, Fuke H, Haino S, Hams T, Hasegawa M, Horikoshi A, Itazaki A, Kim K C, Kumazawa T, Kusumoto A, Lee M H, Makida Y, Matsuda S, Matsukawa Y, Matsumoto K, Mitchell J W, Moiseev A A, Nishimura J, Nozaki M, Orito R, Ormes J F, Picot-Clémente N, Sakai K, Sasaki M, Seo E S, Shikaze Y, Shinoda R, Streitmatter R E, Suzuki J, Takasugi Y, Takeuchi K, Tanaka K, Thakur N, Yamagami T, Yamamoto A, Yoshida T, Yoshimura K 2014 Adv. Space Res. 53 1426Google Scholar
[21] Grimani C, Vocca H, Bagni G, Marconi L, Stanga R, Vetrano F, Viceré A, Amico P, Gammaitoni L, Marchesoni F 2005 Classical. Quantum Gravity. 22 S327Google Scholar
[22] Papini P, Grimani C, Stephens S A 1996 Il Nuovo Cim. C 19 367Google Scholar
[23] Grimani C, Vocca H, Barone M, Stanga R, Vetrano F, Viceré A, Amico P, Bosi L, Marchesoni F, Punturo M, Travasso F 2004 Classical. Quantum Gravity. 21 S629Google Scholar
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