Penetrating heavy ion charge and velocity discrimination with a TimePix-based Si detector (for space radiation applications)
Penetrating heavy ion charge and velocity discrimination with a TimePix-based Si detector (for space radiation applications)
复制标题
使用基于 TimePix 的 Si 探测器进行穿透重离子电荷和速度辨别（用于空间辐射应用）
DOI：
10.1016/j.nima.2010.06.164
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发表时间：
2011
影响因子：
1.4
通讯作者：
C. Zeitlin
中科院分区：
文献类型：
--
作者：
L. Pinsky;A. Empl;A. Gutierrez;J. Jakubek;H. Kitamura;Jack Miller;C. Leroy;N. Stoffle;S. Pospíšil;Y. Uchihori;N. Yasuda;C. Zeitlin
在日本HIMAC设施中使用基于Medipix 2 TimePix-based Si探测器进行曝光，以探索具有不同电荷和能量但具有非常相似的dE/dx值的径迹之间的区分潜力。对600和800 MeV/A Si，180 MeV/A Ne和100 MeV/A O等束流，以15°为增量进行了测量。还获得了400 MeV/A Si和500 MeV/A Fe沿着以及290和180 MeV/A N的数据。TimePix芯片已经过校准，以达到最高分辨率。从这些数据中还可以估计这些类型径迹的角分辨率，这对于开发用于空间辐射环境的基于TimePixTM的剂量测定设备至关重要。这些数据运行的主要目标之一是探索基于TimePix-based Si探测器的分辨率，以区分具有不同能量和电荷但在Si中具有相似dE/dx值的各种离子。对所获得图像的分析显示，对于dE/dx值相似但电荷和能量不同的粒子，δ射线晕存在明显差异。这些测量是一个正在进行的方案的一部分，该方案旨在探索基于TimePixTM的探测器在空间剂量测定用途方面的能力范围。
Exposures were made with Medipix2 TimePix-based Si detectors at the HIMAC facility in Japan to explore the potential for discrimination between tracks with differing charges and energies, but with very similar dE/dx values. Data were taken at 15° increments for a number of different beams including 600 and 800MeV/A Si, 180MeV/A Ne and 100MeV/A O. Data were also obtained for 400MeV/A Si and 500MeV/A Fe along with 290 and 180MeV/A N. The TimePix chips have been calibrated to achieve the maximum resolution. Estimates for the angular resolution for these types of tracks are also possible from these data, which are essential in the development of a TimePix-based dosimetric device for use in a space radiation environment. One of the principal objectives of these data runs was to explore the resolution of TimePix-based Si detectors to discriminate between various ions with different energies and charges, but with similar dE/dx values in Si. Analysis of the images obtained shows the clear differences in the δ-ray halos for particles with similar dE/dx values but for differing charges and energies. These measurements are part of an ongoing program to explore the range of capabilities of the TimePix-based detector with respect to dosimetry uses in space.