Development of low pressure position sensitive multiwire proportional chamber

作者：Zhang BG^*; Wen WX; Wei ZY; Zhang JX; Feng Y; Tan JL; Jin GM; Xiao ZG; Wang HW; Wu HY; Li ZY; Wang SF; Hu RJ

来源：Chinese Physics C, 2003, 27(11): 1023-1026.

• low pressure multiwire proportional chamber
• position resolution
• delay line readout mode
• position determination efficiency

A low pressure two dimensional position sensitive multiwire proportional chamber (LPMWPC) has been developed for measurements of low Z charged particles from the nuclear reaction induced by radioactive ion beam. The detector has a 50mm x 50mm sensitive area and consists of three grids (X-position cathode Y-position). The position is determined through delay line readout mode. The detector has good beam transparency and is also adequate to be used in vacuum. The LPMWPC has been tested at a pressure of 800Pa of n-heptane and a bias Voltage of 720V. The test results indicate that the position resolution of the chamber is Deltax = Deltay = I mm and detection efficiency is larger than 80 % for the low Z particle at intermediate energies. This kind of chamber has be used to determine the direction of the incident particle.

• 出版日期2003-11
• 单位宿州大学; 中国科学院近代物理研究所; 宿州学院; 苏州大学