一种多极平行板雪崩探测器  

Two dimension position sensitive multi-plate PPAC

作　　者：毛瑞士[1] 郭忠言[1] 肖国青[1] 詹文龙[1] 徐瑚珊[1] 胡正国[1] 王猛[1] 孙志宇[1] 陈志强[1] 陈立新[1] 李琛[1] 白洁[1] 张金霞[1] 李存藩[1] 

机构地区：[1]中国科学院近代物理研究所,甘肃兰州730000

出　　处：《核电子学与探测技术》2004年第2期151-154,共4页Nuclear Electronics & Detection Technology

基　　金：国家基金资助项目:19975059;19825115;19735010;19735051;G2000077400;G2000077401;G2000077404

摘　　要：描述了一种为RIBLL研制的在线束流监测用双维位置灵敏多极平行板雪崩探测器(Multi-platePPAC)。它主要由中心阳极、两个位置灵敏栅极和两个阴极平面组成。灵敏面积为100mm×100mm。使用异丁烷工作气体,气压稳定在650Pa,阳极在+400V,阴极在-350V时,对三组分α源测得探测器的位置分辨约0.58mm(FWHM),位置非线性±50μm,探测效率好于99.2%。由于该探测器明显的高增益,它适合探测较高能量的较轻粒子。A two-dimensional positional sensitive multi-plate PPAC with resistance chain readout has been developed for Radioactive Ion Beam Line in Lanzhou (RIBLL). The PPAC has an active area of 100 mm×100 mm. It consists of an anode plane, a x wire plane, a y wire plane and two cathode planes. The gaps between anode and wire planes are 3 mm. And the gaps between cathodes and wire planes also are 3 mm. When filled with iso-butane at a pressure of 6.5 mb, the 0.58 mm (FWHM) position resolution and >99.2% detection efficiencies and <±50μm linearity of the PPAC were estimated for 3 components α source.

关 键 词：雪崩 位置灵敏探测器 异丁烷 PPAC 测量电子学 结构设计 

分 类 号：P426.636[天文地球—大气科学及气象学] TL816.5[核科学技术—核技术及应用]