| Report number | AIDAinnova-CONF-2024-002 |
| Title | An advance Krypton – CO2 cascade refrigeration unit for the Phase III Upgrade of the VELO detector at CERN |
| Author(s) | Contiero, Luca (Norwegian University of Science and Technology (NTNU) (NO)) ; Hafner, Armin (Norwegian University of Science and Technology (NTNU) (NO)) ; Verlaat, Bart (CERN) ; Banasiak, Krzysztof (Norwegian University of Science and Technology (NTNU) (NO)) ; Allouche, Yosr (Norwegian University of Science and Technology (NTNU) (NO)) |
| Publication | 2023 |
| Imprint | 2023-04-27 |
| Published in: | Conference website |
| Study | AIDAinnova |
| Project | WP10: Advanced Mechanics for Tracking and Vertex Detectors |
| Keywords | refrigeration ; carbon dioxide ; krypton ; transcritical ; supercritical |
| Abstract | The Vertex Locator (VELO) of the LHCb (Large Hadron Collider) experiment will soon undergo the Phase III upgrade to fully read out events in a higher irradiated environment. An unprecedented amount of radiation will lead to temperature levels unmanageable by the current CO2 cooling system (2PACL) developed at CERN-Nikhef. Therefore, a new environmentally friendly cooling medium and working cycle must be designed to meet the new requirements, with temperature levels expected in the range of -60 to -80°C. The noble gas Krypton is the most promising coolant for the future upgrade of the Large Hadron Collider. This work discusses a potential solution for heat rejection achievable by a cascade configuration system comprising a CO2 cooling unit with multi-evaporating temperature levels. Such a process must be reliable and stable, regardless of the amount of heat rejected, which will vary throughout the lifetime of the detectors. |
| Submitted by | camila.pedano@cern.ch |
Record created 2024-11-13, last modified 2024-11-13