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CERN Document Server 找到 8 笔记录  检索需时 0.71 秒. 
1.
CMS RPC performance and operation in LHC Run 3 / CMS Collaboration
The CMS experiment has collected more than 180 fb$^{-1}$ of proton-proton collision data at a 13.6 TeV center-of-mass energy in Run 3 data taking (2022, 2023 and 2024). The CMS RPC system faces the challenge of the LHC delivered instantaneous luminosity of up to 2 x 10$^{34}$ cm$^{-2}$s$^{-1}$, providing redundant information for robust muon triggering, reconstruction and identification. [...]
CMS-CR-2024-336.- Geneva : CERN, 2024 - 8 p. Fulltext: PDF;
In : 17th International Conference on Resistive Plate Chambers and Related Detectors, Santiago de Compostela, 09 - 13 Sep 2024
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2.
Production and validation of industrially produced large-sized GEM foils for the Phase-2 upgrade of the CMS muon spectrometer / Abbas, Syed Mohsin (IPM, Tehran) ; Abbrescia, Marcello (INFN, Bari ; Bari U.) ; Abdalla, Hassan Fathy (Cairo, Acad. Sci. Res. Tech.) ; Abdelalim, Ahmed Ali (Cairo, Acad. Sci. Res. Tech.) ; Abuzeid Hassan, Shimaa Abdelwahed (INFN, Pavia) ; Aebi, Devin Michael (Texas A-M) ; Agapitos, Antonis (Peking U.) ; Ahmad, Ashfaq (Quaid-i-Azam U.) ; Ahmed, Asar (Delhi U.) ; Ahmed, Waqar (Quaid-i-Azam U.) et al.
The upgrade of the CMS detector for the high luminosity LHC (HL-LHC) will include gas electron multiplier (GEM) detectors in the end-cap muon spectrometer. Due to the limited supply of large area GEM detectors, the Korean CMS (KCMS) collaboration had formed a consortium with Mecaro Co., Ltd. to serve as a supplier of GEM foils with area of approximately 0.6 m$^{2}$. The consortium has developed a double-mask etching technique for production of these large-sized GEM foils. This article describes the production, quality control, and quality assessment (QA/QC) procedures and the mass production status for the GEM foils. [...]
CMS-NOTE-2023-006; CERN-CMS-NOTE-2023-006.- Geneva : CERN, 2023 - 18 p. Fulltext: PDF;
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3.
Quality Control of Mass-Produced GEM Detectors for the CMS GE1/1 Muon Upgrade / Abbas, Syed Mohsin (IPM, Tehran) ; Abbrescia, Marcello (INFN, Bari ; Bari U.) ; Abdalla, Hassan Fathy (Cairo, Acad. Sci. Res. Tech.) ; Abdelalim, Ahmed Ali (Cairo, Acad. Sci. Res. Tech.) ; Abuzeid Hassan, Shimaa Abdelwahed (INFN, Pavia) ; Agapitos, Antonis (Peking U.) ; Ahmad, Ashfaq (Quaid-i-Azam U.) ; Ahmed, Asar (Delhi U.) ; Ahmed, Waqar (Quaid-i-Azam U.) ; Aimè, Chiara (INFN, Pavia ; Pavia U.) et al.
The series of upgrades to the Large Hadron Collider, culminating in the High Luminosity Large Hadron Collider, will enable a significant expansion of the physics program of the CMS experiment. However, the accelerator upgrades will also make the experimental conditions more challenging, with implications for detector operations, triggering, and data analysis. [...]
CMS-NOTE-2022-004; CERN-CMS-NOTE-2022-004.- Geneva : CERN, 2022 - 47 p. Fulltext: PDF;
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4.
CMS GEM detector material study for the HL-LHC / Muhammad, Saleh (Quaid-i-Azam U.) /CMS Collaboration
A study on the Gaseous Electron Multiplier (GEM) foil material is performed to determine the moisture diffusion rate and saturation level and the moisture effects on its mechanical properties. The study is focused on the foil contact with ambient air and moisture to determine the value of the diffusion coefficient of water in the detector polyimide. [...]
CMS-CR-2017-266.- Geneva : CERN, 2017 - 5 p. - Published in : PoS EPS-HEP2017 (2017) 799 Fulltext: CR2017_266 - PDF; PoS(EPS-HEP2017)799 - PDF;
In : 2017 European Physical Society Conference on High Energy Physics, Venice, Italy, 05 - 12 Jul 2017, pp.799
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5.
Preliminary results of Resistive Plate Chambers operated with eco-friendly gas mixtures for application in the CMS experiment / CMS Collaboration
The operations of Resistive Plate Chambers in LHC experiments require F-based gases for optimal performance. Recent regulations demand the use of environmentally unfriendly F-based gases to be limited or banned. [...]
CMS-CR-2016-074.- Geneva : CERN, 2016 - 9 p. Fulltext: PDF;
In : 13th Workshop on Resistive Plate Chambers and Related Detectors, Ghent, Belgium, 22 - 26 Feb 2016
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6.
Gaseous Electron Multiplier (GEM), foil holes deformation studies / Suhaj, Adam (Summer Student) ; Muhammad, Saleh (PhD Student - Frascati group)
GEM detectors play an important role in the upcoming high-luminosity LHC upgrade in 2018 where they will be exposed to high doses of radiation in the muon endcap region [...]
CERN-STUDENTS-Note-2015-206. - 2015
Access to fulltext
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7.
Data Acquisition System for RPC Testing / Ahmed, Ijaz ; Ahmed, Waqar ; Ansari, Muhammad Hamid ; Asghar, Muhammad Irfan ; Asghar, Sajjad ; Awan, Irfan Ullah ; Butt, Jamila ; Hoorani, Hafeez R ; Khurshid, Ishtiaq Hussain Taimoor ; Muhammad, Saleh et al.
The Data Acquisition (DAQ) System of the Compact Muon Solenoid (CMS) RPC test station was built in National Centre for Physics (NCP) during the year 2004-2005 with joint efforts by NCP and PAEC groups. The system is based on the NIM, VME and CAMAC technologies which allowed users to test 10 RPCs simultaneously. [...]
CMS-NOTE-2008-031.- Geneva : CERN, 2008 - 11 p. Fulltext: PDF;
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8.
Quality Assurance Tests of the CMS Endcap RPCs / Ahmed, Ijaz ; Ahmed, Waqar ; Hamid Ansari, M ; Irfan Asghar, M ; Asghar, Sajjad ; Awan, Irfan Ullah ; Butt, Jamila ; Hoorani, Hafeez R ; Hussain, Ishtiaq ; Khurshid, Taimoor et al.
In this note, we have described the quality assurance tests performed for endcap Resistive Plate Chambers (RPCs) at two different sites, Pakistan Atomic Energy Commission (PAEC) and National Centre for Physics (NCP), in Pakistan. This paper describes various quality assurance tests both at the level of gas gaps and the chambers. [...]
CMS-NOTE-2008-030.- Geneva : CERN, 2008 - 14 p. Fulltext: PDF;
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