EP-DT roadmap towards CO 2 cooling of "phase-2" detectors Paolo Petagna (CERN PH-DT)

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1 st Discussion on CMS-HGC CO 2 Cooling 3 Operation: unit swapping and recovery For the Phase2 upgrades a redundancy scheme is proposed involving the installation of one spare cooling plant and a swapping scheme smoothly allowing to substitute each one of the n plant in use (faulty or requiring maintenance) with the spare unit. This very appealing scheme has several implications not only at the level of integration, but also of plant hardware design, process optimization (stop / swap / recover) and control implementation. Dedicated studies will be required One possible idea: modular 2PACL concept Typical section to be prototyped