1. Update on UT cooling specifications and status of activities LHCb CO2 cooling meeting 31/8/2015 Simone Coelli For the Milano UT group INFN Milano 1 Istituto Nazionale di Fisica Nucleare Sezione di Milano

2. Work in progress DETECTOR COOLING TEST LHCb UT central stave characterization measurement have been done full power applied Work in progress to extract information from test and create a useful output The preparation of a calculation note with the technical details is in progress cooling measurement, after pc and other refurbishment, will restart this week

3. Work in progress We are working on a new design hypothesis of the stave inlet and outlet connections using a 1/16” ‘flexible’ pipe from the manifolds, to cope with the space and mechanical problems. The relevant material, 1/16 “ pipes and calibrated orifices to be mounted on the cooling test have been ordered, together with needle valves, arriving 10 September. The VCR connections on the pipe will be glued for the test but welding joint is considered for the detector. A dummy line using real components according to this design will be mounted and tested using the TRACI system. More details in next presentations.