Göttingen 2025 – scientific programme

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T: Fachverband Teilchenphysik

T 72: Detectors VII (Calorimeters)

T 72.8: Talk

Thursday, April 3, 2025, 18:00–18:15, VG 1.102

Control and safety systems for CMS high granularity calorimeter cassette assembly facility at CERN — •Maria Toms¹, Markus Klute¹, Ebru Simsek², Ziya Cihan Taysi², Bora Isildak², German Martinez³, Andromachi Tsirou⁴, and Piero Giorgio Verdini⁵ — ¹Karlsruher Institut für Technologie, ETP, Germany — ²Yildiz Technical University, Turkey — ³Florida State University, US — ⁴National and Kapodistrian University of Athens, Greece — ⁵Universita & INFN Pisa, Italy

The CMS collaboration is building a new high-granularity calorimeter (HGCAL) as part of the CMS detector phase 2 upgrade. Silicon modules and SiPM-on-tile boards will be integrated into cassettes prior to their insertion into endcap structure. The cassette assembly will start in early 2025. After assembly, the cassettes will need to be tested in cold conditions with cosmic muons. The cold operation of cassettes inside cold boxes, specially built for this purpose, requires functional detector control (DCS) and subdetector environmental protection (SEP) systems. The purpose of those systems is to provide operators with a convenient way to control and monitor a significant amount of hardware inside and outside the cold box and to guarantee the safety of personnel and detector equipment. The experience obtained from the development and practical use of such systems for the operation of cassette assembly facility (CAF) at CERN can later be used to design control and protection systems for the final HGCAL detector at CMS. The design of control and protection systems for the HGCAL CAF at CERN and the progress on their development are presented.

Keywords: detector control system; detector protection system; high granularity calorimeter; cold operation