CERN Accelerating science

Report number	AIDAinnova-CONF-2024-003
Title	Applying krypton as refrigerant for cooling of future particle detector trackers at CERN
Author(s)	Contiero, Luca (Norwegian University of Science and Technology (NTNU) (NO)) ; Verlaat, Bart (CERN) ; Hafner, Armin (Norwegian University of Science and Technology (NTNU) (NO)) ; Banasiak, Krzysztof (Norwegian University of Science and Technology (NTNU) (NO)) ; Allouche, Yosr (Norwegian University of Science and Technology (NTNU) (NO)) ; Petagna, Paolo (CERN)
Publication	2024
Imprint	2024-08-12
Published in:	Conference website
Study	AIDAinnova
Project	WP10: Advanced Mechanics for Tracking and Vertex Detectors
Keywords	carbon dioxide ; krypton ; ejector ; detectors ; supercritical
Abstract	Future silicon-based particle detectors at CERN’s Large Hadron Collider will be exposed to higher radiation levels, requiring the silicon sensors to be kept at lower temperatures than those provided by the current cooling systems using CO2. Aiming to achieve temperature levels unattainable by CO2 and ranging between -60 to -80°C while maintaining environmental friendliness, the use of Krypton appears promising for the thermal management of future high-energy physics detectors. Although studies on using noble gases for refrigeration purposes outside of deep cryogenic applications are extremely rare, the thermodynamic and transport properties of Krypton suggest great potential as a coolant in detector applications. Since silicon detectors are characterized by ultra-light and fragile structures requiring controlled cooldowns to avoid thermal shocks, a new cooling system was developed. This work presents the concept and strategies to be implemented to meet the harsh requirements imposed by detector cooling.
Submitted by	camila.pedano@cern.ch