Measurement of pion and proton response and longitudinal shower profiles up to 20 nuclear interaction lengths with the ATLAS Tile calorimeter

被引：31

作者：

Adragna, P. ^{[2
,3
]}

Alexa, C. ^{[4
]}

Anderson, K. ^{[5
]}

Antonaki, A. ^{[6
]}

Arabidze, A. ^{[6
]}

Batkova, L. ^{[7
]}

Batusov, V. ^{[8
]}

Beck, H. P. ^{[9
]}

Kuutmann, E. Bergeaas ^{[10
]}

Biscarat, C. ^{[11
]}

Blanchot, G. ^{[15
]}

Bogush, A. ^{[13
]}

Bohm, C. ^{[10
]}

Boldea, V. ^{[4
]}

Bosman, M. ^{[12
]}

Bromberg, C. ^{[14
,24
]}

Budagov, J. ^{[8
]}

Burckhart-Chromek, D. ^{[15
]}

Caprini, M. ^{[4
]}

Caloba, L. ^{[16
]}

Calvet, D. ^{[11
]}

Carli, T. ^{[15
]}

Carvalho, J. ^{[17
,18
]}

Cascella, M. ^{[2
,3
]}

Castelo, J. ^{[19
]}

Castillo, M. V. ^{[19
]}

Cavalli-Sforza, M. ^{[12
]}

Cavasinni, V. ^{[2
,3
]}

Cerqueira, A. S. ^{[16
]}

Clement, C. ^{[10
]}

Cobal, M. ^{[15
]}

Cogswell, F. ^{[20
]}

Constantinescu, S. ^{[4
]}

Costanzo, D. ^{[2
,3
]}

Corso-Radu, A. ^{[15
]}

Cuenca, C. ^{[19
]}

Damazio, D. O. ^{[16
]}

Davidek, T. ^{[15
,23
]}

De, K.

Del Prete, T. ^{[2
,3
]}

Di Girolamo, B. ^{[15
]}

Dita, S. ^{[4
]}

Djobava, T. ^{[25
]}

Dobson, M. ^{[15
]}

Dotti, A. ^{[2
,3
]}

Downing, R. ^{[20
]}

Efthymiopoulos, I. ^{[15
]}

Eriksson, D. ^{[10
]}

Errede, D. ^{[20
]}

Errede, S. ^{[20
]}

机构：

[1] Yerevan Phys Inst, Yerevan 375036, Armenia

[2] Univ Pisa, Pisa, Italy

[3] Ist Nazl Fis Nucl, Pisa, Italy

[4] Natl Inst Phys & Nucl Engn, Bucharest, Romania

[5] Univ Chicago, Chicago, IL 60637 USA

[6] Univ Athens, Athens, Greece

[7] Comenius Univ, Bratislava, Slovakia

[8] JINR, Dubna, Russia

[9] Univ Bern, High Energy Phys Lab, CH-3012 Bern, Switzerland

[10] Stockholm Univ, S-10691 Stockholm, Sweden

[11] Univ Blaise Pascal, LPC Clermont Ferrand, Clermont Ferrand, France

[12] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08193 Barcelona, Spain

[13] Natl Acad Sci, Inst Phys, Minsk, BELARUS

[14] Michigan State Univ, E Lansing, MI 48824 USA

[15] CERN, Geneva, Switzerland

[16] COPPE EE UFRJ, Rio De Janeiro, Brazil

[17] Univ Coimbra, LIP, P-3000 Coimbra, Portugal

[18] Univ Coimbra, FCTUC, P-3000 Coimbra, Portugal

[19] Univ Valencia, Ctr Mixto, IFIC, E-46100 Burjassot, Spain

[20] Univ Illinois, Urbana, IL 61801 USA

[21] Univ Lisbon, LIP, P-1699 Lisbon, Portugal

[22] Univ Lisbon, FCUL, P-1699 Lisbon, Portugal

[23] Charles Univ Prague, Fac Math & Phys, Prague, Czech Republic

[24] Univ Texas Arlington, Arlington, TX 76019 USA

[25] Tbilisi State Univ, HEPI, GE-380086 Tbilisi, Georgia

[26] Inst High Energy Phys, Protvino, Russia

[27] Natl Ctr Particles & High Energy Phys, Minsk, BELARUS

[28] Argonne Natl Lab, Argonne, IL 60439 USA

[29] PNPI, Gatchina, Russia

[30] Acad Sci Czech Republ, Inst Phys, Prague, Czech Republic

[31] Univ Catolica Figueira Foz, Figueira Foz, Portugal

[32] Univ Calif Irvine, Irvine, CA 92717 USA

[33] Columbia Univ, Nevis Labs, Irvington, NY 10533 USA

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2010年 / 615卷 / 02期

关键词：

Calorimeter; Test-beam; ATLAS; Monte Carlo simulation; GEANT4; Hadronic shower development; Pion-proton response; Longitudinal shower profile for hadrons; CASCADE; PHOTON;

D O I：

10.1016/j.nima.2010.01.037

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The response of pions and protons in the energy range of 20-180 GeV, produced at CERN's SPS H8 test-beam line in the ATLAS iron-scintillator Tile hadron calorimeter, has been measured. The test-beam configuration allowed the measurement of the longitudinal shower development for pions and protons up to 20 nuclear interaction lengths. It was found that pions penetrate deeper in the calorimeter than protons. However, protons induce showers that are wider laterally to the direction of the impinging particle. Including the measured total energy response, the pion-to-proton energy ratio and the resolution, all observations are consistent with a higher electromagnetic energy fraction in pion-induced showers. The data are compared with GEANT4 simulations using several hadronic physics lists. The measured longitudinal shower profiles are described by an analytical shower parametrization within an accuracy of 5-10%. The amount of energy leaking out behind the calorimeter is determined and parametrized as a function of the beam energy and the calorimeter depth. This allows for a leakage correction of test-beam results in the standard projective geometry. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：158 / 181

页数：24

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