Performance of the low pressure MWPCs for fission fragments under a high background

SONG Yu-Shou; Margaryan A; HU Bi-Tao; TANG Li-Guang

doi:10.1088/1674-1137/35/8/011

Chinese Physics C> 2011, Vol. 35> Issue(8) : 758-762 DOI: 10.1088/1674-1137/35/8/011

Performance of the low pressure MWPCs for fission fragments under a high background

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Two couples of low pressure multi-wire proportional chambers (MWPC) were located in the target chamber to detect fission fragments in a hypernuclei producing experiment at Thomas Jefferson National Laboratory (Jlab). In the experiment, a continuous wave (CW) electron beam was applied to form hypernuclei by electromagnetic interaction. In the target chamber, the high energy (1.853 GeV) and high intensity (500 nA) primary electron beam caused a high particle background, which influenced the detection of the fission fragments. This report described the design of the MWPCs and studied the fission-fragment detecting performance of them under such a high background. The efficiency of the MWPCs was given with the help of a high resolution kaon spectrometer. At the same time, the background particles were discussed with a Monte Carlo code based on GEANT4.

References

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SONG Yu-Shou, Margaryan A, HU Bi-Tao and TANG Li-Guang. Performance of the low pressure MWPCs for fission fragments under a high background[J]. Chinese Physics C, 2011, 35(8): 758-762. doi: 10.1088/1674-1137/35/8/011

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Received: 2010-10-12
Revised: 1900-01-01

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通讯作者: 陈斌, [email protected]

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沈阳化工大学材料科学与工程学院沈阳 110142

Performance of the low pressure MWPCs for fission fragments under a high background

Received Date: 2010-10-12

Accepted Date: 1900-01-01

Available Online: 2011-08-05

Abstract: Two couples of low pressure multi-wire proportional chambers (MWPC) were located in the target chamber to detect fission fragments in a hypernuclei producing experiment at Thomas Jefferson National Laboratory (Jlab). In the experiment, a continuous wave (CW) electron beam was applied to form hypernuclei by electromagnetic interaction. In the target chamber, the high energy (1.853 GeV) and high intensity (500 nA) primary electron beam caused a high particle background, which influenced the detection of the fission fragments. This report described the design of the MWPCs and studied the fission-fragment detecting performance of them under such a high background. The efficiency of the MWPCs was given with the help of a high resolution kaon spectrometer. At the same time, the background particles were discussed with a Monte Carlo code based on GEANT4.

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Performance of the low pressure MWPCs for fission fragments under a high background

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