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Chinese Physics C> 1990, Vol. 14> Issue(3) : 200-206 

CONSTRUCTION OF A 6×6BGO ARRAY AND ITS MEASUREMENT OF LOW ENERGY PHOTONS

  •  Institute of High Energy Physics,Academia Sinica

  • A 6×6BGO array as a prototype of precise fully active electromagnetic calorimeter has been constructed.It consists of 36 Chinese-made BGO crystals,each being 20mm by 20mm in cross section and 200mm in depth,equipped with photomultiplier readout.To obtain linearity over a wide dynamic range,both the anode signal and a dynode signal were digitized.The array has been tested with monochromatic photons produced via (p,γ) reactions at the IHEP Van de Graaff accelerator in the energy range up to 21MeV.The response for photons has shown to the linear in this energy range.The FWHM energy resolution obtained follows a E－1/2 dependence and is superior to that of BGO arrays reported in the literature.
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  • References

    [1] 何景棠等，高能物理与核物理，7(1983)，766.[2] 王伟仔等，高能物理与核物理，10(1986)，1.[3] 王伟仔等，高能物理与核物理,，11(1987)，16.[4] 何景棠，顾以藩，在核过程中寻找低质量中性校子，自然科学基金申请书(1987).[5] 何景棠，顾以藩，寻找л°。放射性，自然科学基金申请书(1989).[6] 苗挺，中国科学院高能物理研究所硕士研究生论文(1988),[7] L3-Lyon Collaboration report, 1986.[8] G. I. Kirkbride et al., IEEE Trans. Nucl. Science, Vol. NS-26 No. 1 (1979), 1537,[9] J. A. Barken et al., CERN-EP/86-152,1986

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GU Yi-Fan, HE Jing-Tang, MIAO Ting, QIAN Zhong-Min, YU Ling and ZHU Guo-Yi. CONSTRUCTION OF A 6×6BGO ARRAY AND ITS MEASUREMENT OF LOW ENERGY PHOTONS[J]. Chinese Physics C, 1990, 14(3): 200-206.
GU Yi-Fan, HE Jing-Tang, MIAO Ting, QIAN Zhong-Min, YU Ling and ZHU Guo-Yi. CONSTRUCTION OF A 6×6BGO ARRAY AND ITS MEASUREMENT OF LOW ENERGY PHOTONS[J]. Chinese Physics C, 1990, 14(3): 200-206. shu
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Received: 1900-01-01
Revised: 1900-01-01
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CONSTRUCTION OF A 6×6BGO ARRAY AND ITS MEASUREMENT OF LOW ENERGY PHOTONS

    Corresponding author: GU Yi-Fan,
  • Institute of High Energy Physics,Academia Sinica
  • Received Date: 1900-01-01
  • Accepted Date: 1900-01-01
  • Available Online: 1990-03-05

Abstract: A 6×6BGO array as a prototype of precise fully active electromagnetic calorimeter has been constructed.It consists of 36 Chinese-made BGO crystals,each being 20mm by 20mm in cross section and 200mm in depth,equipped with photomultiplier readout.To obtain linearity over a wide dynamic range,both the anode signal and a dynode signal were digitized.The array has been tested with monochromatic photons produced via (p,γ) reactions at the IHEP Van de Graaff accelerator in the energy range up to 21MeV.The response for photons has shown to the linear in this energy range.The FWHM energy resolution obtained follows a E－1/2 dependence and is superior to that of BGO arrays reported in the literature.

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