Energy Calibration of CsI(Tl) Crystal for Quenching Factor Measurement in Dark Matter Search

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YUE Qian, LIU Yan, LI Jin, WANG H and WANG M. Energy Calibration of CsI(Tl) Crystal for Quenching Factor Measurement in Dark Matter Search[J]. Chinese Physics C, 2002, 26(7): 728-734.
YUE Qian, LIU Yan, LI Jin, WANG H and WANG M. Energy Calibration of CsI(Tl) Crystal for Quenching Factor Measurement in Dark Matter Search[J]. Chinese Physics C, 2002, 26(7): 728-734. shu
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Received: 2001-08-13
Revised: 1900-01-01
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Energy Calibration of CsI(Tl) Crystal for Quenching Factor Measurement in Dark Matter Search

    Corresponding author: YUE Qian,
  • Institute of High Energy Physics, Chinese Academy of Science, Beijing 1000392 Institute of Physics, Academia Sinica, Taipei 115293 Department of Physics, Taiwan University, Taipei 10600

Abstract: It is important to measure the quenching factor of recoiled nuclei of detector for direct detection of WIMP. Energy calibration of CsI(Tl) crystal detector for measuring quenching factor of recoiled nuclei induced by incident neutron beam has been done with low-energy X-ray sources such as 109Cd and 133Ba and the linearity of energy response of experimental system is obtained. The equivalent energy deposited in CsI(Tl) crystal of a single photoelectron of PMT has been measured. The time of integration of current signals is optimized for different X-ray source energys.

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