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Chinese Physics C> 2004, Vol. 28> Issue(8) : 866-869 

Study on the Analog Read-Out of the YBJ-ARGO RPC

  •  Department of Physics,Yunnan University,Kunming 650091,China2 Institute of High Energy Physics,CAS,Beijing 100039,China

  • The YBJ ARGO experiment is presently in the mounting and debugging phase at the Yangbajing High Altitude Cosmic Ray Laboratory,Tibet,China.The YBJ ARGO EAS array is composed of bakelite RPCs which operate in the streamer mode.The digital read out,performed by means of read out strips,allows measuring the secondary particle number of small size air showers.To extend the dynamic range of the secondary particle number density up to 104/m2,thus to measure the component and spectrum of primary cosmic rays at the knee region,it is necessary to implement the analog read out of the RPC,which is achieved by encapsulating each RPC with two Big PADs.This paper reports on the primary analysis of the analog read out signal of the Big PAD under different gas mixtures,including the amplitude distribution and ratio of the single streamer signal.
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  • References

    [1] . ARGO Collaboration. Astropart icle Physics with ARGO Proposal, 1996;ARGO Collaboration. Addendum to the ARGO..YBJ Proposal, 19982. LU Hong et al.HEP NP, 1999, 23: 417-424(in Chinese)(卢红等.高能物理与核物理,1999,23:417-424)3. HE Hui..Hai et al. HEP NP, 2001, 25(1) : 79-85(何会海等.高能物理与核物理，2001,25(1):79-854. Santonico R et al. Nucl. Instrum.Methods, 1981, A187: 3775. XIE Yi-Gang et al. Particle Detector Data Acquisit ion.Beijing:The Sci..ence Press, 2003(in Chinese)(谢一冈等.粒子探测器与数据获取.北京:科学出版社，2003)6. HE Hui-Hai et al. HEP NP, 2004, 28(4) 422(in Chinese)(何会海等.高能物理与核物理，2004,28(4)422)

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YANG Qun-Yu, HE Hui-Hai, CHEN Xin, LIU Kun, LU Hong, MU Jun, SHEN Pei-Ruo, TAN You-Heng, WU Chao-Yong, ZHANG Hui-Min and ZHANG Yong. Study on the Analog Read-Out of the YBJ-ARGO RPC[J]. Chinese Physics C, 2004, 28(8): 866-869.
YANG Qun-Yu, HE Hui-Hai, CHEN Xin, LIU Kun, LU Hong, MU Jun, SHEN Pei-Ruo, TAN You-Heng, WU Chao-Yong, ZHANG Hui-Min and ZHANG Yong. Study on the Analog Read-Out of the YBJ-ARGO RPC[J]. Chinese Physics C, 2004, 28(8): 866-869. shu
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Received: 2004-01-14
Revised: 1900-01-01
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Study on the Analog Read-Out of the YBJ-ARGO RPC

    Corresponding author: YANG Qun-Yu,
  • Department of Physics,Yunnan University,Kunming 650091,China2 Institute of High Energy Physics,CAS,Beijing 100039,China
  • Received Date: 2004-01-14
  • Accepted Date: 1900-01-01
  • Available Online: 2004-08-05

Abstract: The YBJ ARGO experiment is presently in the mounting and debugging phase at the Yangbajing High Altitude Cosmic Ray Laboratory,Tibet,China.The YBJ ARGO EAS array is composed of bakelite RPCs which operate in the streamer mode.The digital read out,performed by means of read out strips,allows measuring the secondary particle number of small size air showers.To extend the dynamic range of the secondary particle number density up to 104/m2,thus to measure the component and spectrum of primary cosmic rays at the knee region,it is necessary to implement the analog read out of the RPC,which is achieved by encapsulating each RPC with two Big PADs.This paper reports on the primary analysis of the analog read out signal of the Big PAD under different gas mixtures,including the amplitude distribution and ratio of the single streamer signal.

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