Heavy Ion and Proton Irradiation of Gas Electron Multipliers With Liquid Crystal Polymer Insulator : Evaluation Tests for Use in Soace
Heavy Ion and Proton Irradiation of Gas Electron Multipliers With Liquid Crystal Polymer Insulator : Evaluation Tests for Use in Soace
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具有液晶聚合物绝缘体的气体电子倍增器的重离子和质子辐照：用于Soace的评估测试
DOI：
10.1109/tns.2011.2162001
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
Takanori Iwahashi
中科院分区：
文献类型：
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作者：
Otaki;S.;Goto;K.;Watanabe;S.;大瀧翔・後藤和宏・渡辺茂;大瀧翔・後藤和宏・渡辺茂;大瀧翔・後藤和宏・渡辺茂;北浦貴士;Takashi Kitaura;北浦貴士;北浦貴士;北浦貴士;Yuki Enso;Yuki Endo;Yuki Endo;Yuki Endo;遠藤有希;Yuki Endo;Yuki Endo;Yuki Endo;Takanori Iwahashi;Takanori Iwahashi
带有液晶聚合物绝缘体的气体电子倍增器（LCP-GEMs）可以用作低地球轨道上几个卫星任务中的X射线偏振计。为了评估其耐辐射性，LCP-GEMs暴露于重离子加速器设施HIMAC的Fe离子和质子束，并监测气体增益。LCP-GEMs经受了14.4年的完全剥离的Fe离子辐照，能量为500 MeV nuc-1，模拟银河宇宙射线离子。我们还研究了用160 MeV质子辐照模拟地磁俘获质子的LCP-GEMs绝缘层的退化。在用质子照射31.6年当量后，没有观察到增益的显著变化。
Gas electron multipliers with a liquid crystal polymer insulator (LCP-GEMs) can be employed as X-ray polarimeters in several satellite missions in low-earth orbit. To evaluate their resistance to radiation, LCP-GEMs were exposed to Fe ion and proton beams from the heavy-ion accelerator facility HIMAC, and the gas gain was monitored. The LCP-GEMs survived 14.4-year-equivalent irradiation by fully stripped Fe ions with an energy of 500 MeV nuc-1, which simulated galactic cosmic-ray ions. We also studied the degradation of the insulator layer of the LCP-GEMs by irradiation with 160 MeV protons to simulate geomagnetically trapped protons. After irradiation with protons for 31.6 years equivalent, no significant change in gain was observed.