Erlangen 2026 – scientific programme

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T: Fachverband Teilchenphysik

T 90: Calorimeters II

T 90.4: Talk

Friday, March 20, 2026, 09:45–10:00, KH 00.015

Upcoming Upgrades of the ATLAS Liquid Argon Purity System for the High-Luminosity Upgrade — •Christopher Engel, Maximilian Linkert, and Stefan Tapprogge — Institut für Physik, Johannes Gutenberg-Universität, Mainz

The ATLAS Liquid Argon Purity system monitors the possible impurities of the Liquid Argon within the calorimeter system ensuring excellent data taking quality. In preparation of the upcoming Long Shutdown of the LHC for the High Luminosity Upgrade, the Purity system has to undergo some changes and upgrades. This includes a complete redesign of the power distribution board due to the incoming voltage changing from a positive and negative voltage to a single higher positive voltage. The monitoring modules need to have negative voltage resulting in an on-board solution creating the voltage locally. The current design, test setup and production status of the power distribution board is presented.

Keywords: Purity; ATLAS; CERN; Calorimeter; Hardware