Performance of a Large-Area GEM Detector Prototype for the Upgrade of the CMS Muon Endcap System

被引：0

作者：

Abbaneo, D. ^{[18
]}

Abbas, M. ^{[18
]}

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

Ahdelalim, A. A. ^{[10
,11
]}

Akl, M. Abi ^{[16
]}

Ahmed, W. ^{[10
,11
,20
]}

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

Aly, R. ^{[10
,11
]}

Asawatangtrakuldee, C. ^{[4
]}

Ashfaq, A. ^{[20
]}

Aspell, E. ^{[18
]}

Assran, Y. ^{[9
]}

Awan, I. ^{[20
]}

Bally, S. ^{[18
]}

Ban, Y. ^{[4
]}

Banerjee, S. ^{[22
]}

Barria, P. ^{[7
]}

Benussi, L. ^{[17
]}

Bhopatkar, V. ^{[25
]}

Bianco, S. ^{[17
]}

Bos, J. ^{[18
]}

Bouhali, O. ^{[16
]}

Braibant, S. ^{[5
,6
]}

Buontempo, S. ^{[27
]}

Calabria, C. ^{[2
,3
]}

Caponero, M. ^{[17
]}

Caputo, C. ^{[2
,3
]}

Casscse, F. ^{[27
]}

Castaneda, A. ^{[16
]}

Cauwenbergh, S. ^{[19
]}

Cavallo, F. R. ^{[5
,6
]}

Celik, A. ^{[12
]}

Choi, M. ^{[35
]}

Choi, K. ^{[35
]}

Choi, S. ^{[33
]}

Christiansen, J. ^{[18
]}

Cimmino, A. ^{[19
]}

Colafranceschi, S. ^{[18
]}

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

Garcia, A. Conde ^{[18
]}

Dabrowski, M. M. ^{[18
]}

De Lentdecker, G. ^{[7
]}

De Oliveira, R. ^{[18
]}

de Robertis, G. ^{[2
,3
]}

Dildick, S. ^{[12
,19
]}

Dorney, B. ^{[18
]}

Elmetenawee, W. ^{[10
,11
]}

Fabrice, G. ^{[31
]}

Ferrini, M. ^{[17
]}

机构：

[1] Rhein Westfal TH Aachen, Phys Inst A 3, Aachen, Germany

[2] Univ Bari, Politecn Bari, Bari, Italy

[3] Ist Nazl Fis Nucl, Sez Bari, Bari, Italy

[4] Peking Univ, Beijing, Peoples R China

[5] Univ Bologna, Bologna, Italy

[6] INFN Bologna, Bologna, Italy

[7] Univ Libre Bruxelles, Brussels, Belgium

[8] Natl Inst Sci Educ & Res, Bhubaneswar, Orissa, India

[9] Acad Sci Res & Technol, ENHEP, Cairo, Egypt

[10] Helwan Univ, Cairo, Egypt

[11] CTP, Cairo, Egypt

[12] Texas A&M Univ, College Stn, TX USA

[13] Kyungpook Natl Univ, Daegu, South Korea

[14] Univ Delhi, Delhi, India

[15] Wayne State Univ, Detroit, MI USA

[16] Texas A&M Univ Qatar, Doha, Qatar

[17] Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy

[18] CERN, Geneva, Switzerland

[19] Univ Ghent, Dept Phys & Astron, Ghent, Belgium

[20] Quaid I Azam Univ Campus, Natl Ctr Phys, Islamabad, Pakistan

[21] Chonbuk Natl Univ, Jeonju, South Korea

[22] Saha Inst Nucl Phys, Kolkata, India

[23] Lappeenranta Univ Technol, Lappeenranta, Finland

[24] Univ Calif Los Angeles, Los Angeles, CA USA

[25] Florida Inst Technol, Melbourne, FL USA

[26] Bhabha Atom Res Ctr, Mumbai, Maharashtra, India

[27] INFN Napoli, Naples, Italy

[28] INFN Pavia, Pavia, Italy

[29] Univ Pavia, Pavia, Italy

[30] Ist Nazl Fis Nucl, Sez Pisa, Pisa, Italy

[31] IRFU CEA Saclay, Saclay, France

[32] Univ Sofia, Sofia, Bulgaria

[33] Korea Univ, Seoul, South Korea

[34] Seoul Natl Univ, Seoul, South Korea

[35] Univ Seoul, Seoul, South Korea

来源：

2014 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE (NSS/MIC) | 2014年

关键词：

D O I：

暂无

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Gas Electron Multiplier (GEM) technology is being considered for the forward muon upgrade of the CMS experiment in Phase 2 of the CERN LHC. Its first implementation is planned for the GE1/1 system in the 1.5 <vertical bar eta vertical bar < 2.2 region of the muon endcap mainly to control muon level-1 trigger rates after the second long LHC shutdown. A GE1/1 triple-GEM detector is read out by 3,072 radial strips with 455 mu rad pitch arranged in eight eta-sectors. We assembled a full-size GE1/1 prototype of 1m length at Florida Tech and tested it in 20-120 GeV hadron beams at Fermilab using Ar/CO2 70:30 and the RD51 scalable readout system. Four small GEM detectors with 2-D readout and an average measured azimuthal resolution of 36 mu rad provided precise reference tracks. Construction of this largest GEM detector built to-date is described. Strip cluster parameters, detection efficiency, and spatial resolution are studied with position and high voltage scans. The plateau detection efficiency is [97.1 +/- 0.2 (stat)]%. The azimuthal resolution is found to be [123.5 +/- 1.6 (slat)] mu rad when operating in the center of the efficiency plateau and using full pulse height information. The resolution can be slightly improved by similar to 10 mu rad when correcting for the bias due to discrete readout strips. The CMS upgrade design calls for readout electronics with binary hit output. When strip clusters are formed correspondingly without charge-weighting and with fixed hit thresholds, a position resolution of [136.8 +/- 2.5 stat] mu rad is measured, consistent with the expected resolution of strip-pitch root 12 = 131.3 mu rad. Other eta-sectors of the detector show similar response and performance.

引用

页数：8

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