A1 Journal article (refereed), original research

Layout and assembly technique of the GEM chambers for the upgrade of the CMS first muon endcap station


Open Access publication

Publication Details
Authors: Petrow H., Hakkarainen T., Tuuva T., Abbaneo D., Abbas M., Abbrescia M., Abdalla H., Ahmad A., Ahmed A.,Ahmed W., Ali C., Asghar I., Aspell P., Assran Y, Avila C., Ban Y., Band R., Bansal S., Bencze G., Beni N., CMS Collaboration
Publisher: Elsevier
Publication year: 2019
Language: English
Related Journal or Series Information: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Journal name in source: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume number: 918
Start page: 67
End page: 75
Number of pages: 9
ISSN: 0168-9002
eISSN: 1872-9576
JUFO-Level of this publication: 1
Open Access: Open Access publication
Location of the parallel saved publication: https://arxiv.org/abs/1812.00411

Abstract

Triple-GEM detector technology was recently selected by CMS for a part of the upgrade of its forward muon detector system as GEM detectors provide a stable operation in the high radiation environment expected during the future High-Luminosity phase of the Large Hadron Collider (HL-LHC). In a first step, GEM chambers (detectors) will be installed in the innermost muon endcap station in the pseudo-rapidity region, mainly to control level-1 muon trigger rates after the second LHC Long Shutdown. These new chambers will add redundancy to the muon system in the -region where the background rates are high, and the bending of the muon trajectories due to the CMS magnetic field is small. A novel construction technique for such chambers has been developed in such a way where foils are mounted onto a single stack and then uniformly stretched mechanically, avoiding the use of spacers and glue inside the active gas volume. We describe the layout, the stretching mechanism and the overall assembly technique of such GEM chambers.


KeywordsCMS, GEM, High Luminosity LHC

Last updated on 2020-20-03 at 10:03