球载多丝正比室新电子学系统  

The New Electronics System of Balloon Borne MWPC

作　　者：李延国[1] 徐永忠[1] 杨加伟 吴伯冰[1] 吴枚[1] 李惕碚[1] 

机构地区：[1]中国科学院高能物理研究所

出　　处：《核电子学与探测技术》1999年第5期341-346,共6页Nuclear Electronics & Detection Technology

基　　金：国家自然科学基金

摘　　要：介绍了球载硬Ｘ射线天文望远镜（ＨＡＰＩ－４）的大面积多丝正比室新的电子学系统，所设计的高压电源、高压分配器、电荷灵敏前置放大器、主放大器等单元电路，有效地降低了输出噪声、抑制了能谱畸变，提高了能量分辨率。充３０４ｋＰａ氙气，阳极丝单丝和编组输出，６０ｋｅＶ能量分辨率分别可达７％和８％。The new developed electronics system of large area MWPC, HAPI-4 Balloon borne Hybrid Hard X ray Astronomy Telescope, is introduced. The circuit units, such as HV powers, HV distributors, charge sensitive pre amplifiers main amplifiers etc., have successfully reduced the output noise, restrained the abnormality of the energy spectra, and improved the overall energy rsolution. Filled with 3 atm Xe, the MWPC overall energy resolution of single wire and wire group can reach 7% and 8% respectively at 60 kV.

关 键 词：多丝正比室 能量分辨率 电子学系统 阳极 供电 

分 类 号：TH751.03[机械工程—仪器科学与技术] TL816.1[机械工程—精密仪器及机械]