Resolving electrons from protons in ATIC

被引：20

作者：

Chang, J. ^{[1
,2
]}

Adams, J. H., Jr. ^{[3
]}

Ahn, H. S. ^{[4
]}

Bashindzhagyan, G. L. ^{[5
]}

Batkov, K. E. ^{[5
]}

Christl, M.

Fazely, A. R. ^{[6
]}

Ganel, O. ^{[4
]}

Gunashingha, R. M. ^{[6
]}

Guzik, T. G. ^{[7
]}

Isbert, J. ^{[7
]}

Kim, K. C. ^{[4
]}

Kouznetsov, E. N. ^{[5
]}

Lin, Z. W. ^{[8
]}

Panasyuk, M. I. ^{[5
]}

Panov, A. D. ^{[5
]}

Schmidt, W. K. H. ^{[2
]}

Seo, E. S. ^{[4
]}

Sokolskaya, N. V. ^{[5
]}

Watts, John W. ^{[3
]}

Wefel, J. P. ^{[7
]}

Wu, J. ^{[7
]}

Zatsepin, V. I. ^{[5
]}

机构：

[1] Chinese Acad Sci, Purple Mt Observ, Space Astron Div, Jiangsu 210008, Peoples R China

[2] Max Planck Inst Solar Syst Res, Katlenburg Lindau, Germany

[3] NASA, George C Marshall Space Flight Ctr, Huntsville, AL 35812 USA

[4] Univ Maryland, Inst Phys Sci & Technol, College Pk, MD 20742 USA

[5] Moscow MV Lomonosov State Univ, Skobeltsyn Inst Nucl Phys, Moscow, Russia

[6] So Univ, Dept Phys, Baton Rouge, LA USA

[7] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA

[8] Univ Alabama, Huntsville, AL 35899 USA

来源：

ADVANCES IN SPACE RESEARCH | 2008年 / 42卷 / 03期

基金：

美国国家航空航天局; 俄罗斯基础研究基金会; 中国国家自然科学基金;

关键词：

electron; simulation; beam test; balloon flight;

D O I：

10.1016/j.asr.2007.06.012

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

The Advanced Thin Ionization Calorimeter (ATIC) experiment is designed for high energy cosmic ray ion detection. The possibility to identify high energy primary cosmic ray electrons in the presence of the 'background' of cosmic ray protons has been studied by simulating nuclear-electromagnetic cascade showers using the FLUKA Monte Carlo simulation code. The ATIC design, consisting of a graphite target and an energy detection device, a totally active calorimeter built up of 2.5 cm x 2.5 cm x 25.0 cm BGO scintillator bars, gives sufficient information to distinguish electrons from protons. While identifying about 80% of electrons as such, only about 2 in 10,000 protons (@ 150 GeV) will mimic electrons. In September of 1999 ATIC was exposed to high-energy electron and proton beams at the CERN H2 beam line, and this data confirmed the electron detection capabilities of ATIC. From 2000-12-28 to 2001-01-13 ATIC was flown as a long duration balloon test flight from McMurdo, Antarctica, recording over 360 h of data and allowing electron separation to be confirmed in the flight data. In addition, ATIC electron detection capabilities can be checked by atmospheric gamma-ray observations. (c) 2007 COSPAR. Published by Elsevier Ltd. All rights reserved.

引用

页码：431 / 436

页数：6

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