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

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; ZHANG Yong

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

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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.

References

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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.

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Received: 2004-01-14
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

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

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