High voltage consolidation of the temperature measurement channels of the LHC superconducting current leads
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Published:2023-02-01
Issue:02
Volume:18
Page:C02010
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ISSN:1748-0221
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Container-title:Journal of Instrumentation
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language:
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Short-container-title:J. Inst.
Author:
Trikoupis N.,Casas-Cubillos J.,Bustamante E.
Abstract
Abstract
Recurrent dielectric breakdowns on the cryogenics instrumentation during the CERN LHC Electrical Quality Assurance (ELQA) campaigns led to an investigation of their root causes. During the CERN Long Shutdown 2 (LS2), several weaknesses were identified like floating wires or cable screens, cabling non-conformities, connector assembly issues, and weakness of the electronic conditioning cards. The paper presents the cabling layout from the sensor till the acquisition cards and the actions undertaken to increase the robustness against dielectric ruptures. These actions include rebuild of the cabling and connectors using a laser stripping machine, new wiring patterns and upgrades on the electronic cards.
Subject
Mathematical Physics,Instrumentation
Reference3 articles.
1. Current leads for the LHC magnet system;Ballarino;IEEE Trans. Appl. Supercond.,2002
2. The radiation tolerant electronics for the LHC cryogenic controls: basic design and first operational experience;Casas-Cubillos,2008