首页> 外文期刊>Nuclear Instruments & Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment >Operating large size GEM detectors using a novel optocoupler based biasing scheme for the Muon Chamber system of CBM experiment
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Operating large size GEM detectors using a novel optocoupler based biasing scheme for the Muon Chamber system of CBM experiment

机译:使用新型的基于光耦合器的偏置方案为CBM实验的Muon Chamber系统操作大型GEM检测器

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摘要

An assembly of large area (~2000 cm~2) triple GEM detector modules will be used for the first two stations of Muon Chamber (MUCH) system of Compressed Baryonic Matter (CBM) experiment at FAIR. Each GEM foil has its top surface segmented into 24 divisions. A novel HV distribution schematic has been implemented to power the individual segments. This design based on optocouplers is not only cost-effective but also has the capability to isolate the faulty segments if required, during the process of data taking. A large size prototype based on this layout was designed and fabricated. The performance of such a prototype has been discussed. Radiation and stability tests of the optocouplers with regards to CBM requirements (a ten-year integrated dose of ~10~(12)n_(eq)/cm~2 for neutrons and ~30 krad for Gammas) has been reported.
机译:FAIR的压缩重子物质(CBM)实验的Muon Chamber(MUCH)系统的前两个站将使用大面积(〜2000 cm〜2)三重GEM检测器模块的组件。每个GEM箔片的上表面均分为24个部分。已经实施了新颖的HV分配示意图,以为各个段供电。这种基于光耦合器的设计不仅具有成本效益,而且还具有在数据采集过程中根据需要隔离故障段的能力。设计并制造了基于此布局的大型原型。已经讨论了这种原型的性能。已经报道了关于光耦合器对CBM要求的辐射和稳定性测试(对于中子,十年累积剂量约为10〜(12)n_(eq)/ cm〜2,对于伽玛射线约为30 krad。

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