Study of Double-Layer Multi-Wire Proportional Chamber based on LC Delay Circuit

ZHANG Xing; HU Rongjiang; LU Chengui; YANG Herun; MA Peng; GUAN Yuanfan; WEI Xianglun; DUAN Limin; WANG Jiansong; ZHENG Yong

doi:10.11804/NuclPhysRev.34.03.591

A double-layer Multi-Wire Proportional Chamber (MWPC) with 100 mm×80 mm active area has been developed for Radioactive Ion Beam Line in Lanzhou(RIBLL Ⅱ). The position information has been obtained by a LC delay circuit readout method. Being called of double-layer MWPC, it is composed of two full MWPCs, each consists of an anode plane sandwiched between two parallel cathode planes, anode wires and cathode wires are perpendicular to each other. In order to improve the detection efficiency, the cathode wires of corresponding position are combined to enhance inductive signal. The cathode wires of two full MWPCs are orthogonally placed to give two coordinates of the incident particles. The sensitivity uniformity is also found to be relatively good and the position resolution of X, Y direction are measured to be 199.9 and 154.0 μm using a ⁵⁵Fe-5.9 keV X ray, respectively. The position linearity of X, Y direction are as good as 0.999 for whole sensitive area of the detector. The detector has been used successfully on the experiment at RIBLL Ⅱ.

Study of Double-Layer Multi-Wire Proportional Chamber based on LC Delay Circuit

1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;

2. School of Physical Science and Technology, Southwest University, Chongqing 400715, China;

3. University of Chinese Academy of Sciences, Beijing 100049, China

Funds: National Natural Science Foundation of China (11375246, 11405223, 11375238); National Basic Research Program of China (973 Program) (2014CB845405)

Corresponding author: 10.11804/NuclPhysRev.34.03.591

Received Date: 2016-12-08

Rev Recd Date: 2017-04-23

Publish Date: 2017-07-18

Key words:

Double-Layer Multi-Wire Proportional Chamber /
LC delay circuit /
position sensitivity uniformity /
position linearity /
position resolution

Abstract: A double-layer Multi-Wire Proportional Chamber (MWPC) with 100 mm×80 mm active area has been developed for Radioactive Ion Beam Line in Lanzhou(RIBLL Ⅱ). The position information has been obtained by a LC delay circuit readout method. Being called of double-layer MWPC, it is composed of two full MWPCs, each consists of an anode plane sandwiched between two parallel cathode planes, anode wires and cathode wires are perpendicular to each other. In order to improve the detection efficiency, the cathode wires of corresponding position are combined to enhance inductive signal. The cathode wires of two full MWPCs are orthogonally placed to give two coordinates of the incident particles. The sensitivity uniformity is also found to be relatively good and the position resolution of X, Y direction are measured to be 199.9 and 154.0 μm using a ⁵⁵Fe-5.9 keV X ray, respectively. The position linearity of X, Y direction are as good as 0.999 for whole sensitive area of the detector. The detector has been used successfully on the experiment at RIBLL Ⅱ.

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Study of Double-Layer Multi-Wire Proportional Chamber based on LC Delay Circuit

doi: 10.11804/NuclPhysRev.34.03.591

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