Slide 1

P. Tropea for the PH-DT CO 2 team CO 2 cooling @ CERN 11 March 2015 CO 2 cooling activities in PH-DT

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TRACI CMS: in good shape (HNP small pump): bldg 186, will be used end of the month by Milano LHCb team x testing of UT cooling TRACI 3 AIDA (HNP big pump): Crystal palace, under commissioning (Maciek, Piotr, Nicola to join). Will be used by Oxford for Velo cold plate (April?) TRACI 3 Milano (Mpumps): to arrive at CERN for commissioning end of March TRACI 3 Oxford & Sheffield: to arrive at CERN for commissioning end of April Software is validated on TRACI AIDA, small modules to be modified for other pumps TRACI portable units 11 March 2015 P. Tropea - PH-DT CO 2 team 2

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Validation of 2-phase mass flow meter (Coriolis): tests to be performed March 30 th /April 23 rd by dedicated stage (Tym) + Nicola Bpix mock-up validation: pipework arrived at CERN last week, Robert organizing for pressure and leak test before flow circulation. Then instrumentation phase for few weeks. Tests of circulation in parallel with Coriolis tests. Validation of single loop DP flowmeter: to follow Coriolis mass flow tests. Nicola. TIF activities 11 March 2015 P. Tropea - PH-DT CO2 team 3

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P5 CMS Pix commissioning 11 March 2015 P. Tropea - PH-DT CO2 team 4 Physics beam Beam Chiller expert needed ? SEICAR intervention ? Jerome, Paulina, Steve, Lukasz B./Z., Maciek, Imtiaz, Cedric, Norbert

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Hand over to EN/CV/DC scheduled on 1 st of May 2015. Document ready in EDMS 1481225 v.1. Approval is ongoing, first comments received. Bart is allowed officially by Nikhef to finish his involvement in IBL project by end of April 2015. PH/DT stays responsible for IBL CO2 cooling controls. Pique service and maintenance will be done by EN/CV/DC. P1 ATLAS IBL handover 11 March 2015 P. Tropea - PH-DT CO2 team 5