Identification of Primary Y-Rays by the Characteristics of Time-Space Structure of the Cosmic-Ray Air Showers

FENG Gun-Feng; ZHANG Xue-Yao; WANG Yong-Gang; XUE Liang; MA Li-Na; LI Jin-Yu; ZHANG Nai-Jian

Chinese Physics C> 2003, Vol. 27> Issue(11) : 969-972

Identification of Primary Y-Rays by the Characteristics of Time-Space Structure of the Cosmic-Ray Air Showers

Department of Physics, Shandong University, Ji'nan 250100, China

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Abstract：
The time-space structure of particles for individual air showers induced by primary γ-rays and protons at the observation level is analysed by Monte Carlo simulation. It is shown that air showers induced by the primary γ-rays can be effectively separated from the air showers induced by protons (background) using the combination cuts on the arrival time fluctuation and the lateral distribution width of secondary particles in air showers. This method can be used for reducing the background of hadrons in searching for γ-ray point sources for ARGO experiment coorperated by China and Italy at Yangbajing. The effect of this method on the significance of γ-ray signals is also estimated.

References

[1]

TAN You–Heng. HEP NP, 1999, 23(2) :103 (in Chinese)(谭有恒.高能物理与核物理,1999,23(2) :103)2 KONG Fan–Min, FENG Cun–Feng, ZHANG Xue–Yao et al. Chin. Jour. of Computational phys. 2000, 17(3) :280 (in Chinese)(孔繁敏,冯存峰,张学尧等.计算物理,2000,17(3) :280) 3 Haeusler R, Badea A F, Rebel H et al. Astropart. Phys., 2002, 17:421

[1]	XIE Wan , OUYANG Qun , XIE Yi-Gang , ZHENG Shu-Cheng , HAN Hong-Guang , CHENG Shao-Chen , YANG Yi . Performance Study of Monitored Drift Tube Chambers with Cosmic Rays. Chinese Physics C, 2007, 31(11): 1056-1061.
[2]	ZHANG Ji-Long , CUI Shu-Wang , DING Lin-Kai , DING Xiao-Hong , FENG Cun-Feng , FENG Zhen-Yong , GAO Xiao-Yu , GENG Qing-Xi , GUO Hong-Wei , HE Hui-Hai , HE Mao , , , , , , . Search for a TeV Gamma Rays Emission from the Shell-like SNP G40.5-0.5 Using the Yangbajing Extend Air Shower Array. Chinese Physics C, 2006, 30(1): 13-17.
[3]	MA Li-Na , FENG Cun-Feng , ZHANG Yao , ZHANG Xue-Rao . Identification of Primary γ-Rays in ARGO Experiment at Yangbajing Using ANNS. Chinese Physics C, 2005, 29(5): 485-490.
[4]	YUE Qian , LI Yuan-Jing , CHENG Jian-Ping , WANG Yi , LI Jin , LAI Yong-Fang , LI Qing-Hua , TANG Le . Cosmic-Ray Test and Temperature Effects of MRPC. Chinese Physics C, 2004, 28(11): 1180-1183.
[5]	LIU Jun , GENG Qing-Xi , YANG Hong-Tao , LIU Chang-Qin , ZHANG Pin , GAO Xiao-Yu , JING Cai-Liu , ZHA Min , JING Gui-Ru , ZHU Qing-Qi , Cheung T , Ng L . Study of EAS Local Muon Density Spectrum and the Knee in the Energy Spectrum of Primary Cosmic Rays. Chinese Physics C, 2003, 27(2): 109-112.
[6]	WANG Yong-Gang , XUE Liang , FENG Cun-Feng , FU Yu , LI Jie , ZHANG Xue-Yao , LI Jin-Yu , ZHANG Nai-Jian , HE Mao , WANG Cheng-Rui , REN Jing-Ru , LU Sui-Ling . Adjustment of Parameters of Primary Cosmic Ray Energy Spectrum with Recent Direct Measurments. Chinese Physics C, 2002, 26(2): 108-115.
[7]	XUE Liang , DAI ZhiQiang , LI Jinyu , ZHANG Xueyao , FENG CunFeng , FU Yu , ZHANG NaiJian , REN JingRu , LU SuiLing . Phenomenon of Alignment in Cosmic Ray High Energy Family Events. Chinese Physics C, 2000, 24(11): 979-984.
[8]	FENG CunFeng , ZHANG XueYao , KONG FanMin , HE Mao , FU Yu , DAI ZhiQiang , ZHANG NaiJian . Relation between Interactive Models and Identification of Primary Cosmic Ray Components at the “Knee”. Chinese Physics C, 2000, 24(6): 467-472.
[9]	Chen Jiangchuan , Zhu Yongsheng , Cheng Baosen , Liu Huaimin , Zhang Dahua , Wang Ping , Li Canguo , Huang Yinzhi , Zhang Jinlong . Energy Resolution and Its Simulation for the ESC of BES. Chinese Physics C, 1997, 21(11): 982-989.
[10]	Xu Chunxian , Dai Hongyue . A Statistic Model for Galactic Cosmic Rays. Chinese Physics C, 1997, 21(6): 486-493.
[11]	Gu Jianhui , Yu Zhongqiang . Muon Sample Selection from Cosmic Ray Events for BES. Chinese Physics C, 1996, 20(1): 26-31.
[12]	MA Ji-Mao , MAO Hui-Shun , BAI Jing-Zhi , XIE Pei-Pei , YAN Jie , WANG Yao-Hui , LIU Rong-Guang , SONG Xiao-Fei , WU Zhen-Dong , FAN Qun . RESULTS OF COSMIC RAY TESTS WITH THE BES MAIN DRIBT CHAMBER. Chinese Physics C, 1989, 13(9): 781-788.
[13]	ZHANG Nai-Jian , WANG Cheng-Rui , HE Mao , CAO Pei-Yuan , LI Jin-Yu , ZOU Bao-Tang , WANG Guang-Jun , WEI Chao . HIGH ENERGY HADRONS IN ATMOSPHERIC COSMIC RAYS OBSERVED WITH Fe EMULSION CHAMBERS. Chinese Physics C, 1989, 13(11): 961-966.
[14]	ZOU Bao-Tang , WANG Cheng-Rui , REN Jing-Ru . A COSMIC RAY SUPER HIGH ENERGY MULTIJET FAMILY EVENT. Chinese Physics C, 1986, 10(4): 393-399.
[15]	JIANG Yin-Lin , YUAN Yu-Kui , LI Yan-Guo , CHEN Duan-Bao , ZHENG Rong-Ting , SONG Jian-Ning . RESEARCH FOR THE POSSIBILITY ON DETECTING COSMIC RAY PARTICLES BY ACOUSTIC WAY. Chinese Physics C, 1986, 10(1): 9-14.
[16]	XU Chun-Xian . THE ANISOTROPY OF COSMIC RAY PARTICLES IN THE ENERGY RANGE 10¹¹—10¹⁹eV. Chinese Physics C, 1985, 9(4): 385-390.
[17]	LU Chang-Guo , LU Wei-Da , ZHOU Yue-Hua , ZHANG Yu , GU Wei-Xin . TESTING RESULTS ON THE PROTOTYPE OF SHOWER COUNTER WITH COSMIC RAYS. Chinese Physics C, 1985, 9(4): 397-404.
[18]	WANG Dian-Rong , WANG Xian-Pei , LI Cheng-Ze , CHEN Yuan-Bai , LIN Jian-Feng , CHANG Chia-Chuan , ZHAO Jing-Wei , JIANG Ying-Yuan , XU Yu-Lin , TANG Su-Qiu , DAI Gui-Liang . THE MEASUREMENT OF THE COSMIC RAY MUON ZENITH ANGLE DISTRIBUTION WITH ON-LINE MICROCOMPUTER. Chinese Physics C, 1983, 7(2): 135-141.
[19]	DING Lin-Kai , JING Gui-Ru . NUCLEAR COMPONENTS OF PRIMARYS COSMIC RAYS AND CLUSTER PHENOMENA IN EMULSION CHAMBER EXPERIMENTS. Chinese Physics C, 1983, 7(2): 129-134.
[20]	Kuang Hao-huai , Hu Wen-jun , Zhou Yin-zao , Tan You-HENG , Shen Chang-quan , Jang Yin-lin , Zhu Qing-qi , Qin Ke-yu , Li Yan-guo , Wang Li-an . IDENTIFICATION OF THE HORIZONTAL COSIMC RAY PENETRATING PARTICLES. Chinese Physics C, 1980, 4(4): 413-416.

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FENG Gun-Feng, ZHANG Xue-Yao, WANG Yong-Gang, XUE Liang, MA Li-Na, LI Jin-Yu and ZHANG Nai-Jian. Identification of Primary Y-Rays by the Characteristics of Time-Space Structure of the Cosmic-Ray Air Showers[J]. Chinese Physics C, 2003, 27(11): 969-972.

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Received: 2003-03-24
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

Identification of Primary Y-Rays by the Characteristics of Time-Space Structure of the Cosmic-Ray Air Showers

Corresponding author: FENG Gun-Feng,

Department of Physics, Shandong University, Ji'nan 250100, China

Received Date: 2003-03-24

Accepted Date: 1900-01-01

Available Online: 2003-11-05

Abstract: The time-space structure of particles for individual air showers induced by primary γ-rays and protons at the observation level is analysed by Monte Carlo simulation. It is shown that air showers induced by the primary γ-rays can be effectively separated from the air showers induced by protons (background) using the combination cuts on the arrival time fluctuation and the lateral distribution width of secondary particles in air showers. This method can be used for reducing the background of hadrons in searching for γ-ray point sources for ARGO experiment coorperated by China and Italy at Yangbajing. The effect of this method on the significance of γ-ray signals is also estimated.

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Identification of Primary Y-Rays by the Characteristics of Time-Space Structure of the Cosmic-Ray Air Showers

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