Development of MSGC detectors on diamond film-coated silicon composite substrates
Development of MSGC detectors on diamond film-coated silicon composite substrates
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DOI：
10.1088/0022-3727/38/3/018
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发表时间：
2005-02
期刊：
影响因子：
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通讯作者：
Linjun Wang;Jinfang Lu;Minglong Zhang;Ying Yang;L. Wang;Q. Su;W. Shi;Yiben Xia
中科院分区：
文献类型：
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作者：
Linjun Wang;Jinfang Lu;Minglong Zhang;Ying Yang;L. Wang;Q. Su;W. Shi;Yiben Xia
本文首次将金刚石薄膜包覆硅作为微带气体室（MSGC）的衬底。复合基板的粗糙度较低，电阻率在1010-1011Ω cm之间。其电容很小，几乎不随频率变化。这些结果表明金刚石膜/Si复合材料是一种很有前途的MSGCs衬底材料。利用该复合衬底制作了面积为2 × 2cm 2的MSGC探测器。本文详细地研究和讨论了漂移电压和阴极电压对5.9keV ~（55）Fe X射线能量分辨率的影响。当MSGC在-1000 V的漂移电压和-650 V的阴极电压下使用混合气体（90%Ar +10%CH4）时，实现了12.3%的能量分辨率（X射线峰的相对半峰全宽）。
In this paper, diamond film-coated silicon was developed to be used as a substrate in a microstrip gas chamber (MSGC) for the first time. The roughness of the composite substrate was rather low, and the resistivity was in the range of 1010–1011Ω cm. Its capacitance was very small and almost had no variation with frequency. All these results prove that the diamond film/Si composite material is a promising substrate for MSGCs. Using this composite substrate, a MSGC detector with an area of 2 × 2 cm2 was fabricated. The effects of the drift voltage and cathode voltage on the energy resolution for 5.9 keV 55Fe x-rays have been examined in detail and discussed. An energy resolution (the relative full width at half maximum of the x-ray peak) of 12.3% was achieved when the MSGC was operated at a drift voltage of −1000 V and a cathode voltage of −650 V with a gas mixture (90% Ar + 10% CH4).