ICCD在三维成像量能器读出系统中的应用

在宇宙线空间探测领域,三维成像量能器具有大几何因子和较强的粒子鉴别能力,因而具有广泛的应用前景。但是与二维量能器相比,其读出路数更多,电子学更复杂。增强电荷耦合器件(Intensified charge-coupled device,ICCD)比传统的光电器件集成度高、体积小、功耗低、发热量低,正适合用于三维成像量能器的大规模读出,改善资源利用率。本工作主要讨论了ICCD在三维成像量能器方案中的应用,介绍了ICCD线性、光强分辨率测试结果以及对串扰进行修正的方法,最后给出使用欧洲核子中心(European Organization for Nuclear Research,CERN)提供的10 GeV电子束进行束流照射实验得到的能量重建结果,初步验证了ICCD用于三维成像量能器读出系统的可行性。

Application of ICCD to the readout system for 3D imaging calorimeter

Background:Compared with common 2D calorimeters, 3D imaging calorimeters have higher geometric acceptance and better background rejection performance for space particle physics experiments but they also have a large number of readout channels with more complicated electronics. The advantages of small size, low power consumption, low heat and high integration makes the image intensified charge-coupled device (ICCD) preferable to some traditional photoelectric devices like photomultiplier tube (PMT).Purpose:This study aims to investigate the feasibility of ICCD readout for a 3D imaging calorimeter.Methods:A 3D imaging calorimeter prototype with 250 channels and readout for an ICCD has been designed. Laser diodes were used as light sources to measure the linearity, light intensity resolution and crosstalk performance of the ICCD. The 10-GeV electron beam of the Super Proton Synchrotron at the European Organization for Nuclear Research (CERN-SPS) was employed to measure the response of the calorimeter and reconstruct the calorimetry.Results:Experimental result of 10-GeV electron beam test shows the energy of incident particle can be reconstructed from ICCD image correctly.Conclusion:The performance of ICCD with appropriate readout electronics can meet the requirements for a 3D imaging calorimeter.