CERN Accelerating science

Article
Report number	arXiv:2311.02021
Title	CMS ECAL VFE design, production and testing
Author(s)	Lustermann, W. (Zurich, ETH) ; Abadjiev, D. (Northeastern U.) ; Dissertori, G. (Zurich, ETH) ; Dejardin, M. (IRFU, Saclay) ; Gadek, T. (Zurich, ETH) ; Martin, L.T. (Northeastern U.) ; Stachon, K. (Zurich, ETH)
Collaboration	CMS Collaboration
Publication	2024-05-17
Imprint	2023-11-03
Number of pages	7
In:	JINST 19 (2024) C05034
In:	Topical Workshop on Electronics for Particle Physics 2023 (TWEPP 2023), Geremeas, Sardinia, Italy, 1 - 6 Oct 2023, pp.C05034
DOI	10.1088/1748-0221/19/05/C05034
Subject category	hep-ex ; Particle Physics - Experiment ; physics.ins-det ; Detectors and Experimental Techniques
Accelerator/Facility, Experiment	CERN LHC ; CMS
Abstract	Maintaining the required performance of the CMS electromagnetic calorimeter (ECAL) barrel at the High-Luminosity Large Hadron Collider (HL-LHC) requires the replacement of the entire on-detector electronics. 12240 new very front end (VFE) cards will amplify and digitize the signals of 62100 lead-tungstate crystals instrumented with avalanche photodiodes. The VFE cards host five channels of CATIA pre-amplifier ASICs followed by LiTE-DTU ASICs, which digitize signals with 160MS/s and 12bit resolution. We present the strategy and infrastructure developed for achieving the required reliability of less than 0.5% failing channels over the expected lifetime of 20 years. This includes the choice of standards, design for reliability and manufacturing, as well as factory acceptance tests, reception testing, environmental stress screening and calibration of the VFE cards.
Copyright/License	preprint: (License: arXiv nonexclusive-distrib 1.0) publication: © 2024-2025 The Author(s) (License: CC-BY-4.0)

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