Non-linearity effects on the light-output calibration of light charged particles in CsI(Tl) scintillator crystals
Non-linearity effects on the light-output calibration of light charged particles in CsI(Tl) scintillator crystals
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DOI：
10.1016/j.nima.2019.03.065
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发表时间：
2019-02
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通讯作者：
D. Dell’Aquila;S. Sweany;K. W. Brown;Z. Chajecki;W. G. Lynch;F. Teh;C. Tsang;M. Tsang;K. Zhu;C. Anderson;A. Anthony;S. Barlini;J. Barney;A. Camaiani;G. Jhang;J. Crosby;J. Estee;M. Ghazali;F. Guan;O. Khanal;S. Kodali;I. Lombardo;J. Manfredi;L. Morelli;P. Morfouace;C. Niu;G. Verde
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作者：
D. Dell’Aquila;S. Sweany;K. W. Brown;Z. Chajecki;W. G. Lynch;F. Teh;C. Tsang;M. Tsang;K. Zhu;C. Anderson;A. Anthony;S. Barlini;J. Barney;A. Camaiani;G. Jhang;J. Crosby;J. Estee;M. Ghazali;F. Guan;O. Khanal;S. Kodali;I. Lombardo;J. Manfredi;L. Morelli;P. Morfouace;C. Niu;G. Verde
在较宽的检测能量范围 (E≤ 300 MeV) 内研究了 CsI (Tl) 晶体中轻离子 (Z≤ 4) 产生的光输出。能量光校准数据集是通过最近升级的高分辨率阵列 (HiRA10) 中的 10 厘米晶体获得的。我们使用 40、48 Ca+ CH 2 在 28 MeV/u、56.6 MeV/u、39 MeV/u 和 139.8 MeV/u 下的质子反冲数据以及来自直接低能束的专门实验的数据。我们还使用 139.8 MeV/u 下 40、48 Ca+ 58、64 Ni、112、124 Sn 碰撞反应的 p、d 和 t 粒子的穿通点。人们发现，特别是由 Tl 掺杂和 CsI 晶体中的光收集效应引起的非线性会显着影响光输出，从而影响轻带电粒子（尤其是氢同位素）的探测器响应的校准。提出了一种新的氢光输出经验参数化 L (E, Z= 1, A) 来解释观察到的效应。结果发现，12 个 HiRA10 望远镜集群中的所有 48 个 CsI (Tl) 晶体的结果是一致的。
The light output produced by light ions (Z≤ 4) in CsI (Tl) crystals is studied over a wide range of detected energies (E≤ 300 MeV). Energy-light calibration data sets are obtained with the 10 cm crystals in the recently upgraded High-Resolution Array (HiRA10). We use proton recoil data from 40, 48 Ca+ CH 2 at 28 MeV/u, 56.6 MeV/u, 39 MeV/u and 139.8 MeV/u and data from a dedicated experiment with direct low-energy beams. We also use the punch through points of p, d, and t particles from 40, 48 Ca+ 58, 64 Ni, 112, 124 Sn collisions reactions at 139.8 MeV/u. Non-linearities, arising in particular from Tl doping and light collection effects in the CsI crystals, are found to significantly affect the light output and therefore the calibration of the detector response for light charged particles, especially the hydrogen isotopes. A new empirical parametrization of the hydrogen light output, L (E, Z= 1, A), is proposed to account for the observed effects. Results are found to be consistent for all 48 CsI (Tl) crystals in a cluster of 12 HiRA10 telescopes.