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CMS RPC commissioning of the existing detector during the long shutdown
/ Cimmino, A (Gent U.) ; Ban, Y (Peking U.) ; Cai, J (Peking U.) ; Li, Q (Peking U.) ; Liu, S (Peking U.) ; Qian, S (Peking U.) ; Wang, D (Peking U.) ; Xu, Z (Peking U.) ; Zhang, F (Peking U.) ; Choi, Y (Sungkyunkwan U.) et al.
/CMS
February 1 (th) 2013 marked the end of the first period of running of the Large Hadron Collider (LHC) and the start of a two-year break from operation (LS1) aimed at consolidating both the accelerator as well as the detectors. By the end of LS1, the LHC is expected to provide collisions at 13 Tev. [...]
2014 - 8 p.
- Published in : JINST 9 (2014) C10043
In : 12th workshop on Resistive Plate Chambers and Related Detectors, Beijing, China, 23 - 28 Feb 2014, pp.C10043
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Triple-GEM discharge probability studies at CHARM: simulations and experimental results
/ CMS Muon Group Collaboration
The CMS muon system in the region with 2.03<|η|<2.82 is characterized by a very harsh radiation environment which can generate hit rates up to 144 kHz/cm2 and an integrated charge of 8 C/cm2 over ten years of operation. In order to increase the detector performance and acceptance for physics events including muons, a new muon station (ME0) has been proposed for installation in that region. [...]
2020 - 23 p.
- Published in : JINST 15 (2020) P10013
Fulltext: PDF;
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Detector Control System for the GE1/1 slice test
/ Abbas, M (KIT, Karlsruhe) ; Abbrescia, M (Bari Polytechnic ; Bari U. ; INFN, Bari) ; Abdalla, H (Cairo, Acad. Sci. Res. Tech.) ; Zeid, S Abu (Cairo, Acad. Sci. Res. Tech.) ; Agapitos, A (Peking U.) ; Ahmad, A (NCP, Islamabad) ; Ahmed, A (Cairo, Acad. Sci. Res. Tech.) ; Ahmed, A (Delhi U.) ; Ahmed, W (NCP, Islamabad) ; Amarjeet, S (Panjab U.) et al.
Gas Electron Multiplier (GEM) technology, in particular triple-GEM, was selected for the upgrade of the CMS endcap muon system following several years of intense effort on R&D.; The triple-GEM chambers (GE1/1) are being installed at station 1 during the second long shutdown with the goal of reducing the Level-1 muon trigger rate and improving the tracking performance in the harsh radiation environment foreseen in the future LHC operation [1]. A first installation of a demonstrator system started at the beginning of 2017: 10 triple-GEM detectors were installed in the CMS muon system with the aim of gaining operational experience and demonstrating the integration of the GE1/1 system into the trigger. [...]
2020 - 19 p.
- Published in : JINST 15 (2020) P05023
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Impact of magnetic field on the stability of the CMS GE1/1 GEM detector operation
/ Abbas, M (KIT, Karlsruhe) ; Abbott, S (UC, Davis) ; Abbrescia, M (Bari U. ; INFN, Bari) ; Abdalla, H (Alexandria U. ; American U., Cairo) ; Abdelalim, A (Alexandria U. ; Zewail City Sci. Technol., Giza) ; AbuZeid, S (Ain Shams U., Cairo ; INFN, Pavia) ; Aebi, D (Texas A-M) ; Agapitos, A (Peking U.) ; Ahmad, A (NCP, Islamabad) ; Ahmed, A (Delhi Tech. U.) et al.
The Gas Electron Multiplier (GEM) detectors of the GE1/1 station of the CMS experiment have been operated in the CMS magnetic field for the first time on the 7$^{th}$ of October 2021. During the magnetic field ramps, several discharge phenomena were observed, leading to instability in the GEM High Voltage (HV) power system. [...]
2023 - 24 p.
- Published in : JINST 18 (2023) P11029
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R&D on a new type of micropattern gaseous detector: The Fast Timing Micropattern detector
/ CMS Collaboration
Micropattern gaseous detectors (MPGD) underwent significant upgrades in recent years, introducing resistive materials to build compact spark-protected devices. Exploiting this technology further, various features such as space and time resolution, rate capability, sensitive area, operational stability and radiation hardness can be improved. [...]
CMS-CR-2016-033.-
Geneva : CERN, 2017 - 5 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 845 (2017) 313-317
Fulltext: PDF;
In : 14th Vienna Conference on Instrumentation, Vienna, Austria, 15 - 19 Feb 2016, pp.313-317
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Resistive plate chambers for 2013-2014 muon upgrade in CMS at LHC
/ Colafranceschi, S (CERN) ; Chudasama, R (Bhabha Atomic Res. Ctr.) ; Pant, L M (Bhabha Atomic Res. Ctr.) ; Mohanty, A K (Bhabha Atomic Res. Ctr.) ; Sehgal, R (Bhabha Atomic Res. Ctr.) ; Sehgal, S T (Bhabha Atomic Res. Ctr.) ; Thomas, R G (Bhabha Atomic Res. Ctr.) ; Sharma, A (CERN) ; Bhandari, V (Panjab U.) ; Chand, S (Panjab U.) et al.
During 2013 and 2014 (Long Shutdown LS1) the CMS experiment is upgrading the forward region installing a fourth layer of RPC detectors in order to complete and improve the muon system performances in the view of the foreseen high luminosity run of LHC. The new two endcap disks consists of 144 double-gap RPC chambers assembled at three different production sites: CERN, Ghent (Belgium) and BARC (India). [...]
2014 - 9 p.
- Published in : JINST 9 (2014) C10033
In : 12th workshop on Resistive Plate Chambers and Related Detectors, Beijing, China, 23 - 28 Feb 2014, pp.C10033
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