Characteristics of the Transtion Curves of Showers and Discrimination of γ-Rays and Hadrons in Iron Emulsion Chambers

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

Chinese Physics C> 2001, Vol. 25> Issue(10) : 1012-1016

Characteristics of the Transtion Curves of Showers and Discrimination of γ-Rays and Hadrons in Iron Emulsion Chambers

Department of Physics, Shandong University, Jinan 250100, China2 Intitute of High Energy Phyics, CAS, Beijing 100039, China

Abstract
HTML
Reference
Related

PDF

Abstract：
The GEANT3 code, a general software for detector simulations widely used in the experi- ments of particle physics, is introduced to the Monte Carlo simulation of iron emulsion chambers. Some haracteristics of transition curves of cascade shower and their FWHM (Full Width of Half Maximum) are studied. The probability of discriaminating hadrons from gamma rays using the FWHM distributions for the shower events with starting depth Δt<6c. u. is discussed and an efficient joint criterion of discriminating hadrons from γ-rays in iron emulsion chambers is obtained.

References

[1]

REN Jing–Ru, HUO An–Xiang, LU Sui–Ling et al. Phys. Rev. 1988, D38(5): 14042 ZHANG Nai–Jian, WANG Cheng–Rui, HE Mao et al. High Energy Phys. and Nucl. Phys., 1989, 13(11 ):961(in Chinese)(张乃健,王承瑞,何瑁等.高能物理与核物理,1989,13(11):961)3 Kasahara K. Phys. Rev., 1985, D3l(11):2337 4 Geant Team. [R]. CERN DD/EE/90/1, 1990 5 REN Jing–Ru, LU Sui–Ling, SU Shi et al. High Energy Phys. and Nucl. Phys., 1990, 14(11 ):961(in Chinese)(任敬儒,陆穗苓,苏实等.高能物理与核物理,1990,14(11):961)

[1]	MENG Cai-Rong , LI Xiao-Lin , DUAN Mai-Ying . Pseudorapidity Distribution of Shower Particles in ²⁴Mg-Emulsion Collisions at 4.5A GeV/c. Chinese Physics C, 2004, 28(11): 1165-1169.
[2]	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.
[3]	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.
[4]	FENG Gun-Feng , ZHANG Xue-Yao , WANG Yong-Gang , XUE Liang , MA Li-Na , LI Jin-Yu , ZHANG Nai-Jian . Identification of Primary Y-Rays by the Characteristics of Time-Space Structure of the Cosmic-Ray Air Showers. Chinese Physics C, 2003, 27(11): 969-972.
[5]	YIN Jian-Wu , LIU Feng , LIU Lian-Shou . Self-Affine Analysis for the Dynamical Fluctuations inside Jets Produced in High Energy Hadron-Hadron Collisions. Chinese Physics C, 2002, 26(2): 152-157.
[6]	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.
[7]	Ren Jingru , Lu Suiling , Wang Chengrui , He Mao , Zhang Naijian , Cao Peiyuan , Li Jinyu , Wang Sh , Wang izhi , Wang Mingxing . Attenuation of High Energy Hadrons in Iron. Chinese Physics C, 1996, 20(5): 405-408.
[8]	Chen Jiangchuan , Lu Suiting , Zhu Qingqi , Huo Anxiang . Features of UHE Hadronic Interaction in Fragmentation Region Inferred from the Analysis of MEC Families. Chinese Physics C, 1995, 19(6): 494-499.
[9]	Yang Changgen , Chen Hesheng , Jin Bingnian , Tang Xiaowei . Improvements of The L3 TEC Track Resolution at Vertex. Chinese Physics C, 1994, 18(8): 687-693.
[10]	Liu Fuhu , Sun Hancheng . On the Shower Particles in High Energy Lepton－Nucleus Collisions. Chinese Physics C, 1994, 18(3): 208-212.
[11]	FAN Xiao-Ling , SU Shi , WANG Yi . Cosmic Ray Muon on the Altitude of 5500m Above the Sea Level. Chinese Physics C, 1991, 15(2): 103-110.
[12]	ZHU Qing-Qi , DING Lin-Kai , WANG Guang-Jun , HE Yu-Dong , JING Gui-Ru . DISCUSSIONS ON INTENSITY AND ATTENUATION OF γ-FAMILIES OBSERVED BY MOUNTAIN EMULSION CHAMBER. Chinese Physics C, 1990, 14(4): 296-302.
[13]	REN Jing-Ru , LU Sui-Ling , SU Shi , HUO An-Xiang , WANG Cheng-Rui , ZHANG Nai-Jian , HE Mao , CAO Pei-Yuan , LI Jin-Yu , WANG Shi-Zhi , LI Guang-Ju , BAI Guang-Zhi , LIU Zhong-He , , . STUDY ON SUPERHIGH ENERGY γ-RAY FAMILY EVENTS WITH LARGE-SCALE Fe EMULSION CHAMBERS. Chinese Physics C, 1990, 14(11): 961-965.
[14]	QIU Jin-Fa . THE BACKGROUND DARKNESS OF X-RAY FILMS IN EC EXPERIMENT AND ENERGY CALIBRATION. Chinese Physics C, 1989, 13(11): 967-972.
[15]	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.
[16]	CUI Xiang-Zong . THE METHOD OF POSITION SENSING BY CHARGE DIVISION IN GAS SAMPLING SHOWER COUNTER. Chinese Physics C, 1988, 12(1): 1-5.
[17]	GUO Ke-Zun , DING Lin-Kai . INFLUENCE OF GLUON RADIATION ON THE FORMATION OF CLUSTER PHENOMENA OBSERVED IN EMULSION CHAMBERS. Chinese Physics C, 1985, 9(2): 129-133.
[18]	MA Jin-Yuan , LU Wei-Da , LU Chang-Guo , ZHANG Yu , ZHOU Yue-Hua , GU Wei-Xin . THE EXPERIMENTAL INVESTIGATION ON IMPROVING THE ENERGY RESOLUTION OF THE GAS SAMPLING SHOWER COUNTER. Chinese Physics C, 1984, 8(2): 142-147.
[19]	DING LIN-KAI , ZHU QING-QI , GUO KE-ZHUN . CLUSTER PHENOMENA OBSERVED IN EMULSION CHAMBER EXPERIMENTS IN ENERGY REGION OF 10¹⁵—10¹⁶ eV AND HADRON JETS WITH LARGE TRANSVERSE MOMENTA. Chinese Physics C, 1982, 6(6): 657-664.
[20]	KEN JING-RU , LU SWEI-LING , SU SHIH , PAN JI-RUNG . A STUDY OF ULTRA-HIGH ENERGY γ-RAYS BY EMULSION CHAMBERS. Chinese Physics C, 1978, 2(4): 318-322.

Access

Get Citation

JI Xiao-Bin, FU Yu, XUE Liang, ZHANG Xue-Yao, LI Jie, LI Jin-Yu, ZHANG Nai-Jian, He Mao, REN Jing-Ru and LU Sui-Ling. Characteristics of the Transtion Curves of Showers and Discrimination of γ-Rays and Hadrons in Iron Emulsion Chambers[J]. Chinese Physics C, 2001, 25(10): 1012-1016.

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2001-01-16
Revised: 1900-01-01

Article Metric

Article Views(2911)
PDF Downloads(669)
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

Characteristics of the Transtion Curves of Showers and Discrimination of γ-Rays and Hadrons in Iron Emulsion Chambers

Corresponding author: JI Xiao-Bin,

Department of Physics, Shandong University, Jinan 250100, China2 Intitute of High Energy Phyics, CAS, Beijing 100039, China

Received Date: 2001-01-16

Accepted Date: 1900-01-01

Available Online: 2001-10-05

Abstract: The GEANT3 code, a general software for detector simulations widely used in the experi- ments of particle physics, is introduced to the Monte Carlo simulation of iron emulsion chambers. Some haracteristics of transition curves of cascade shower and their FWHM (Full Width of Half Maximum) are studied. The probability of discriaminating hadrons from gamma rays using the FWHM distributions for the shower events with starting depth Δt<6c. u. is discussed and an efficient joint criterion of discriminating hadrons from γ-rays in iron emulsion chambers is obtained.

HTML

Reference (1)

Characteristics of the Transtion Curves of Showers and Discrimination of γ-Rays and Hadrons in Iron Emulsion Chambers

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article