A novel application of Fiber Bragg Grating (FBG) sensors in MPGD
D. Abbaneo, M. Abbas, M. Abbrescia, A.A. Abdelalim, M. Abi Akl, O., Aboamer, D. Acosta, A. Ahmad, W. Ahmed, W. Ahmed, A. Aleksandrov, R. Aly, P., Altieri, C. Asawatangtrakuldee, P. Aspell, Y. Assran, I. Awan, S. Bally, Y., Ban, S. Banerjee, V. Barashko, P. Barria, G. Bencze

TL;DR
This paper introduces a new use of Fiber Bragg Grating sensors for measuring flatness and tension in large GEM chambers for high-energy physics, improving assembly precision and performance.
Contribution
It presents the first application of FBG sensors for mechanical tensioning and flatness measurement in large-scale GEM detectors, enhancing construction accuracy.
Findings
FBG sensors effectively measure tension in GEM foils
Optimized tensioning improves detector flatness and performance
Successful application on full-sized prototype chambers
Abstract
We present a novel application of Fiber Bragg Grating (FBG) sensors in the construction and characterisation of Micro Pattern Gaseous Detector (MPGD), with particular attention to the realisation of the largest triple (Gas electron Multiplier) GEM chambers so far operated, the GE1/1 chambers of the CMS experiment at LHC. The GE1/1 CMS project consists of 144 GEM chambers of about 0.5 m2 active area each, employing three GEM foils per chamber, to be installed in the forward region of the CMS endcap during the long shutdown of LHC in 2108-2019. The large active area of each GE1/1 chamber consists of GEM foils that are mechanically stretched in order to secure their flatness and the consequent uniform performance of the GE1/1 chamber across its whole active surface. So far FBGs have been used in high energy physics mainly as high precision positioning and re-positioning sensors and as low…
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Taxonomy
TopicsParticle Detector Development and Performance · Magnetic Field Sensors Techniques · CCD and CMOS Imaging Sensors
