Analysis of pixel detector material budget based on test beam
Analysis of pixel detector material budget based on test beam
复制标题
基于测试光束的像素探测器材料预算分析
DOI：
10.1088/1748-0221/16/06/t06004
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发表时间：
2021-06
影响因子：
1.3
通讯作者：
Q. OuYang
中科院分区：
文献类型：
--
作者：
C.Y. Qu;M.Y. Dong;X.C. Tian;X.X. Lu;Y. Wu;H.Y. Zhang;X.Y. Ma;J. Dong;X.D. Ju;X.S. Jiang;Q. OuYang
正在为BESIII内部漂移室升级开发的原型是基于MAPS探测器。探测器模块是探测器原型的基本结构和功能模块。其设计必须满足低材料预算和高刚度的要求。为了验证探测器模块的设计和量化性能，在DESY的束流设施上测试了包括五层模块的探测器原型系统。为了重建探测器模块的二维材料预算图像，提出了一种专用的航迹拟合方法，并考虑了多次散射对航迹拟合的影响，提高了航迹重建的精度。在得到模块上多次散射角分布的基础上，根据Highland公式得到模块的材料预算。测试结果表明，探测器组件的材料预算约为0.35 ± 0.03（sys.）% X0，与计算值0.37%X0一致。
A prototype under development for the BESIII inner drift chamber upgrade is based on MAPS detectors. The detector module is the basic building and functional block of the detector prototype. Its design must meet the requirements of low material budget and high stiffness. To verify the design and quantify the performance of the detector module, a detector prototype system including five layer modules was tested at the beam facility at DESY. In order to reconstruct the 2D material budget image of the detector module, a dedicated track fitting method is developed, and the impact of multiple scattering on the track fitting is taken into account to improve the accuracy of the track reconstruction. After getting the distribution of the multiple scattering angles on the module, the material budget of the module is obtained based on the Highland formula. The test result shows that the material budget of the detector module is about 0.35 ± 0.03 (sys.)% X 0, which is consistent with the calculated value of 0.37% X 0.
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DOI：
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发表时间：
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影响因子：
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期刊：
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影响因子：
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