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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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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.
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Quality control of mass-produced GEM detectors for the CMS GE1/1 muon upgrade
/ Abbas, M. (KIT, Karlsruhe) ; Abbrescia, M. (Bari Polytechnic ; INFN, Bari) ; Abdalla, H. (Ain Shams U., Cairo ; American U., Cairo) ; Abdelalim, A. (Ain Shams U., Cairo ; British U. in Egypt) ; AbuZeid, S. (Ain Shams U., Cairo) ; Agapitos, A. (Peking U.) ; Ahmad, A. (NCP, Islamabad) ; Ahmed, A. (Delhi Tech. U.) ; Ahmed, W. (NCP, Islamabad) ; Aimè, C. (Pavia U. ; INFN, Pavia) 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. [...]
arXiv:2203.12037.-
2022-07-01 - 45 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1034 (2022) 166716
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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.
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