摘要
描述了为RIBLL研制的一种双维位置灵敏PPAC在不同工作气体下的性能测试 .位置读出采用电荷分除法 .在 7mb气压和C3F8工作气体时阳极在+ 595V ,对于 3组分α粒子 ,位置分辨为 0 64mm .使用异丁烷气体 ,阳极在+ 50 0V ,位置分辨为 0 76mm .PPAC在两种气体中探测效率均为 99 1 % .C3F8气体质量厚度和能量损失较大 ,信号幅度较高 ,适合探测较高能量较轻粒子 .异丁烷气体能损较小 ,适合探测较重粒子 .
A two-dimension position sensitive parallel-plate avalanche (PPAC) detector has been developed for RIBLL. The detector consists of one anode and two cathodes. In each cathode a resistance chain is used to readout position signals. The detector has been tested in different operating gases with an α source. When the detector is at 7mb flowing rate of isobutane and +500V on anode, the position resolution of 0 76mm is obtained. For 7mb C 3F 8 and +595V on anode, the position resolution is 0.64mm. The efficiencies are around 99.1% in the cases of C 3F 8 and isobutane. = =
出处
《高能物理与核物理》
EI
CSCD
北大核心
2002年第12期1285-1290,共6页
High Energy Physics and Nuclear Physics
基金
国家杰出青年基金 (1 982 5 1 1 5 )
国家自然科学基金 (1 0 975 0 5 9)
国家重点基础研究发展规划项目 (G2 0 0 0 0 7740 1
G2 0 0 0 0 7740 4)资助~~
