Author: Lunt, S.A.
Paper Title Page
TUPV030 Redesign of the VELO Thermal Control System Forfuture Detector Development 454
  • S.A. Lunt
    UCT Physics, Cape Town, South Africa
  • B. Verlaat, L. Zwalinski
    CERN, Geneva, Switzerland
  The Detector Technologies group at CERN has developed a Two-Phase Accumulator Controlled Loop (2PACL) test system for future detector development, using reused hardware from the LHCb Vertex Locator (VELO) Thermal Control System. The fluid, electrical and control systems have been redesigned and simplified by removing redundant components because it is no longer a critical system. The fluid cycle was updated to allow both 2PACL and integrated 2PACL cycles to be run and the chiller was replaced with an air-cooled unit using hot gas bypass to achieve a high turndown ratio. The electrical systems were upgraded with new hardware to improve usability and practicality. The control system logic is being developed with the CERN’s Unified Industrial Control System (UNICOS) framework. This paper presents thedetails of the design and implementation.  
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About • Received ※ 09 October 2021       Revised ※ 22 November 2021       Accepted ※ 22 December 2021       Issue date ※ 29 December 2021
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