Absorption of scintillation light in a 100 l liquid xenon γ-ray detector and expected detector performance
Absorption of scintillation light in a 100 l liquid xenon γ-ray detector and expected detector performance
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DOI：
10.1016/j.nima.2005.02.029
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发表时间：
2005-06
影响因子：
1.4
通讯作者：
A. Baldini;C. Bemporad;F. Cei;T. Doke;M. Grassi;A. Grebenuk;D. Grigoriev;T. Haruyama;K. Kasami;J. Kikuchi;A. Maki;T. Mashimo;S. Mihara;T. Mitsuhashi;Takehiko Mori;D. Nicoló;H. Nishiguchi;W. Ootani;K. Ozone;A. Papa;R. Pazzi;S. Ritt;R. Sawada;F. Sergiampietri;G. Signorelli;S. Suzuki;K. Terasawa;M. Yamashita;S. Yamashita;T. Yoshimura;Yuki Yuri
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文献类型：
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作者：
A. Baldini;C. Bemporad;F. Cei;T. Doke;M. Grassi;A. Grebenuk;D. Grigoriev;T. Haruyama;K. Kasami;J. Kikuchi;A. Maki;T. Mashimo;S. Mihara;T. Mitsuhashi;Takehiko Mori;D. Nicoló;H. Nishiguchi;W. Ootani;K. Ozone;A. Papa;R. Pazzi;S. Ritt;R. Sawada;F. Sergiampietri;G. Signorelli;S. Suzuki;K. Terasawa;M. Yamashita;S. Yamashita;T. Yoshimura;Yuki Yuri
一个800l的液态氙闪烁γ射线探测器正在研制中，用于在Paul Scherrer研究所的MEG实验中寻找μ+→e+γ衰变。氙的闪烁光被杂质吸收可能会限制这种探测器的性能。我们使用100l的原型机，活性体积为372×372×496mm3to来研究闪烁光吸收。我们开发了一种方法来评估光的吸收，从光的弹性散射分开，通过测量宇宙射线和α源。通过使用合适的净化技术，已经实现了超过100cm的吸收长度。通过蒙特卡罗模拟估计了光吸收对能量分辨率的影响。
An 800l liquid xenon scintillation γ-ray detector is being developed for the MEG experiment which will search for μ+→e+γdecay at the Paul Scherrer Institut. Absorption of scintillation light of xenon by impurities might possibly limit the performance of such a detector. We used a 100l prototype with an active volume of 372×372×496mm3to study the scintillation light absorption. We have developed a method to evaluate the light absorption, separately from elastic scattering of light, by measuring cosmic rays and α sources. By using a suitable purification technique, an absorption length longer than 100cm has been achieved. The effects of the light absorption on the energy resolution are estimated by Monte Carlo simulation.