Radiation tests of real-sized prototype RPCs for the Phase-2 Upgrade of the CMS Muon System

被引:7
|
作者
Lee, K. S. [1 ]
Cho, S. W. [1 ]
Choi, S. Y. [1 ]
Hong, B. [1 ]
Go, Y. [1 ]
Kang, M. H. [1 ]
Lim, J. H. [1 ]
Park, S. K. [1 ]
Cimmino, A. [2 ]
Crucy, S. [2 ]
Fagot, A. [2 ]
Gul, M. [2 ]
Rios, A. A. O. [2 ]
Tytgat, M. [2 ]
Zaganidis, N. [2 ]
Aly, S. [3 ]
Assran, Y. [3 ]
Radi, A. [3 ]
Sayed, A. [3 ]
Singh, G. [4 ]
Abbrescia, M. [5 ]
Iaselli, G. [5 ]
Maggi, M. [5 ]
Pugliese, G. [5 ,22 ]
Verwilligen, P. [5 ]
van Doninck, W. [6 ]
Colafranceschi, S. [7 ]
Sharma, A. [7 ]
Benussi, L. [8 ]
Bianco, S. [8 ]
Piccolo, D. [8 ]
Primavera, F. [8 ]
Bhatnagar, V. [9 ]
Kumarl, R. [9 ]
Metha, A. [9 ]
Singh, J. [9 ]
Ahmad, A. [10 ]
Ahmad, M. [10 ]
Ahmed, W. [10 ]
Asghar, M. I. [10 ]
Awan, I. M. [10 ]
Hassan, Q. [10 ]
Hoorani, H. [10 ]
Khan, W. A. [10 ]
Khurshid, T. [10 ]
Muhammad, S. [10 ]
Shah, M. A. [10 ]
Shahzad, H. [10 ]
Kim, M. S. [11 ]
Goutzvitz, M. [12 ]
机构
[1] Korea Univ, Dept Phys, 145 Anam Ro, Seoul 02841, South Korea
[2] Univ Ghent, Dept Phys & Astron, Proeftuinstr 86, B-9000 Ghent, Belgium
[3] Acad Sci Res & Technol, Egyptian Network High Energy Phys, 101 Kasr El Einy St, Cairo, Egypt
[4] Chulalongkorn Univ, Fac Sci, Dept Phys, Payathai Rd, Bangkok 10330, Thailand
[5] INFN, Sez Bari, Via Orabona 4, IT-70126 Bari, Italy
[6] Vrije Univ Brussel, Blvd Plaine 2, B-1050 Ixelles, Belgium
[7] CERN, Dept Phys, CH-1211 Geneva 23, Switzerland
[8] INFN, Lab Natl Frascati, Via Enrico Fermi 40, IT-00044 Frascati, Italy
[9] Panjab Univ, Dept Phys, Chandigarh Mandir 160014, India
[10] Quaid I Azam Univ, Natl Ctr Phys, Islamabad, Pakistan
[11] Kyungpook Natl Univ, 80 Daehak Ro, Daegu 41566, South Korea
[12] Univ Claude Bernard Lyon, CNRS IN2P3, Inst Phys Nucl Lyon, Villeurbanne, France
[13] Benemerita Univ Autonoma Puebla, Puebla, Mexico
[14] Univ Iberoamer, Mexico City, DF, Mexico
[15] Bhabha Atom Res Ctr, Div Nucl Phys, Bombay 400085, Maharashtra, India
[16] Complesso Univ, INFN, Sez Napoli, Via Cintia, IT-80126 Naples, Italy
[17] INFN, Sez Pavia, Via Bassi 6, Pavia, Italy
[18] Peking Univ, Sch Phys, Beijing 100871, Peoples R China
[19] Univ Seoul, 163 Seoulsiripdae Ro, Seoul 02504, South Korea
[20] Sungkyunkwan Univ, 2066 Seobu Ro, Suwon 16419, Gyeonggi Do, South Korea
[21] Inst Nucl Energy Res, Bulgarian Acad Sci, Tzarigradsko Shaussee Blvd 72, BG-1784 Sofia, Bulgaria
[22] Univ Sofia, Fac Phys, 5 James Bourchier Blvd, BG-1164 Sofia, Bulgaria
[23] Tbilisi Univ, I Ilia Chavchavadze Ave, GE-0179 Tbilisi, Georgia
[24] Univ Los Andes, Apartado Aereo 4976,Carrera 1E,18A 10, Co Bogota, Colombia
[25] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA
[26] Vilnius Univ, Vilnius, Lithuania
来源
关键词
Resistive-plate chambers; Gaseous detectors; Trigger detectors;
D O I
10.1088/1748-0221/11/08/C08008
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
We report on a systematic study of double-gap and four-gap phenolic resistive plate chambers (RPCs) for the Phase-2 upgrade of the CMS muon system at high eta. In the present study, we constructed real-sized double-gap and four-gap RPCs with gap thicknesses of 1.6 and 0.8 mm, respectively, with 2-mm-thick phenolic high-pressure-laminated (HPL) plates. We examined the prototype RPCs with cosmic rays and with 100-GeV muons provided by the SPS H4 beam line at CERN. To examine the rate capability of the prototype RPCs both at Korea University and at the CERN GIF++ facility, the chambers were irradiated with Cs-137 sources providing maximum gamma rates of about 1.5 kHz cm(-2). For the 1.6-mm-thick double-gap RPCs, we found the relatively high threshold on the produced detector charge was conducive to effectively suppressing the rapid increase of strip cluster sizes of muon hits with high voltage, especially when measuring the narrow-pitch strips. The gamma-induced currents drawn in the four-gap RPC were about one-fourth of those drawn in the double-gap RPC. The rate capabilities of both RPC types, proven through the present testing using gamma-ray sources, far exceeded the maximum rate expected in the new high-eta endcap RPCs planned for future phase-II runs of the Large Hadron Collider (LHC).
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页数:12
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