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

Abstract
HTML
Reference
Related

PDF

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]	SHANG Lei , CAI Xiao , WANG Man , WANG Zhi-Gang , FANG Jian , LIU Chun-Xiu , LIU Wan-Jin , SUN Li-Jun , LI Guang-Yi , YAN Liang , ZHANG Hong-Jie , ZHANG Zhen-Hua , SHAN Li- , , , . Cosmic Ray Test on CsI(Tl) Modules of BESⅢ Electromagnetic Calorimeter. Chinese Physics C, 2007, 31(2): 177-182.
[2]	LIU Qian , ZHANG Jia-Wen , CHEN Jin , LI Ru-Bai , ZHAO Jian-Bing , HAN Ji-Feng , XIE Yu-Guang , YAO Ning , QI Na-Ding . Cosmic Ray Test Station for BESⅢ RPC. Chinese Physics C, 2006, 30(4): 327-330.
[3]	BAI Yun-Xiang , XIAO Gang , CAO Zhen . Performance of CRTNT Fluorescence Light Detector for Sub-EeV Cosmic Ray Observation. Chinese Physics C, 2006, 30(9): 824-827.
[4]	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.
[5]	YANG Hong-Tao , LIU Jun , GENG Qing-Xi , LIU Chang-Qin , ZHANG Pin , GAO Xiao-Yu , ZHA Min , JING Gui-Ru , JING Cai-Liu , ZHU Qing-Qi , Cheung T , Leung K , NG L . The Study of Primary Cosmic Ray Mass Composition Around the. Chinese Physics C, 2006, 30(6): 497-500.
[6]	WANG Kong-Sen , WANG He , HUANG Xing-Tao , MA Lian-Liang , MA Li-Na , WANG Yong-Gang , XUE Liang , FENG Cun-Feng , ZHANG Xue-Yao , LI Jin-Yu , ZHANG Nai-Jian , HE Mao , WANG Cheng- , , . Study on the Production Characteristics of Cosmic Ray High Energy Family Events with Simulation and Experiment. Chinese Physics C, 2004, 28(3): 232-238.
[7]	WANG He , WANG Yong-Gang , DAI Zhi-Qiang , XUE Liang , FENG Cun-Feng , ZHANG Xue-Yao , LI Jin-Yu , ZHANG Nai-Jian , HE Mao , WANG Cheng-Rui , REN Jing-Ru , LU Sui-Ling . Lateral Distribution of Shower Particles in High Energy Family Events of Cosmic Rays. Chinese Physics C, 2003, 27(4): 299-303.
[8]	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.
[9]	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.
[10]	JI Xiao-Bin , FU Yu , XUE Liang , ZHANG Xue-Yao , LI Jie , LI Jin-Yu , ZHANG Nai-Jian , He Mao , REN Jing-Ru , LU Sui-Ling . Characteristics of the Transtion Curves of Showers and Discrimination of γ-Rays and Hadrons in Iron Emulsion Chambers. Chinese Physics C, 2001, 25(10): 1012-1016.
[11]	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.
[12]	Xu Chunxian , Dai Hongyue . A Statistic Model for Galactic Cosmic Rays. Chinese Physics C, 1997, 21(6): 486-493.
[13]	Liang Hualou , Xie Wei , Ren Jingru , Wang Taijie , Dai Guiliang . Distinguishing Primary Cosmic-Ray Composition with Artificial Neural Networks. Chinese Physics C, 1997, 21(3): 205-210.
[14]	Jiang Yinlin . Atmospheric Cherenkov Images of Cosmic Ray Muons. Chinese Physics C, 1995, 19(2): 110-115.
[15]	ZHANG Li , ZHANG Ming , MU Jun , YU Chuan-Zan . Propagation of Cosmic-Ray Nuclei with Reacceleration. Chinese Physics C, 1992, 16(5): 392-397.
[16]	CAO Pei-Yuan , WANG Cheng-Rui , HE Mao , ZHANG Nai-Jian , LI Jin-Yu , LI Jie , REN Jing-Ru , LU Sui-Ling . High Energy Gamma Rays and Hadrons in Atmospheric Cosmic Rays. Chinese Physics C, 1992, 16(10): 886-890.
[17]	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.
[18]	HE Yu-Dong , ZHOU Wen-De , HE Ren-Dao , MU Jun , DING Lin-Kai , ZHU Qing-Qi , JING Cai-Liu , JING Gui-Ru . AN ANALYSIS OF PRIMARY COSMIC RAY COMPOSITION AT ENERGIES AROUND 10¹⁴eV USING SINGLE-SHOWER EVENTS OBSERVED BY MOUNTAIN EMULSION CHAMBER. Chinese Physics C, 1986, 10(6): 641-646.
[19]	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.
[20]	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.

Access

Get Citation

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.

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2003-03-24
Revised: 1900-01-01

Article Metric

Article Views(2777)
PDF Downloads(660)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
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.

HTML

Reference (1)

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

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article