Development of Low Pressure Position Sensitive Multiwire Proportional Chamber

ZHANG Bao-Guo; WEN Wan-Xin; WEI Zhi-Yong; ZHANG Jin-Xia; FENG Ying; TAN Ji-Lian; JIN Gen-Ming; XIAO Zhi-Gang; WANG Hong-Wei; WU He-Yu; LI Zu-Yu; WANG Su-Fang; HU Rong-J

Chinese Physics C> 2003, Vol. 27> Issue(11) : 1023-1026

Development of Low Pressure Position Sensitive Multiwire Proportional Chamber

School of Radiation Medicine and Public Health, Suzhou University, Suzhou 215007, China2 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China

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Abstract：
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×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 Δx = Δy = 1mm 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.

References

[1]

TAN Ji–Lian et al. Nuclear Electronics and Detection Technology, 1996, 16: 1(in Chinese)(谭继廉等.核电子学与探测技术,1996,16:1)2 LU Zhao–Hui et al. Nuclear Electronics and Detection Technology, 2001, 21: 94(in Chinese)(卢朝晖等.核电子学与探测技术,2001,21:94)3 Ottini–Hustache S et al. Nucl. Instr. Meth., 1999, A431:4764 Becker H et al. Nucl. Instr. Meth., 1971, 95:5255 de Moura M et al. Nucl. Instr. and Meth., 1999, A433:623

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ZHANG Bao-Guo, WEN Wan-Xin, WEI Zhi-Yong, ZHANG Jin-Xia, FENG Ying, TAN Ji-Lian, JIN Gen-Ming, XIAO Zhi-Gang, WANG Hong-Wei, WU He-Yu, LI Zu-Yu, WANG Su-Fang and HU Rong-J. Development of Low Pressure Position Sensitive Multiwire Proportional Chamber[J]. Chinese Physics C, 2003, 27(11): 1023-1026.

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Received: 2003-04-17
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Development of Low Pressure Position Sensitive Multiwire Proportional Chamber

Corresponding author: ZHANG Bao-Guo,

School of Radiation Medicine and Public Health, Suzhou University, Suzhou 215007, China2 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China

Received Date: 2003-04-17
Accepted Date: 1900-01-01
Available Online: 2003-11-05

Abstract: 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×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 Δx = Δy = 1mm 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.