Campana

Slide 1: 

Chamber dressing – Critical items (1) Faraday cages Some delay wrt to original planning due to several changes and late finalization of the prototypes All the drawings had to be revised – Some delay again due to load (muon walls) on Alessandro Delivery of all M3R3, then M3R4, then M2R3, M5R4, etc... The company is preparing in the meantime some pieces common to all chambers (legs) LV connector All delivered LV distribution bars (INFN chambers) M3R3 ready, all the others to be ordered

Slide 2: 

Chamber dressing – Critical items (2) LV boards Prototype is ok - In one month we should have all the boards Then burn-in should be done (waiting for firm offer) CERN board still not defined HV connector Mould ready to prepare (this week) a batch of connectors Then we must qualify it through CERN TIS Once OK, the construction is fast (1-2 weeks) HV filter A prototype with CAEN HV module has been tested. The connection to the chamber to be defined CARDIAC Accordingly to Adriano, (mid-end) November we should receive a large sample of boards

Slide 3: 

Chamber dressing – Critical items (3) Chamber dressing – as expected – is not an easy job Not all the pieces are there at the same time (at least at the beginning) Certainly one could start with the mechanical work A trained staff of 2 people can prepare 3 chambers per day (this has been verified) We have to test how long we need to setup the FEE and to test it 3 working areas (3-4 people) could meet the requirement of 2 ch/day INFN has to setup (12*2+24*4+96=216) chambers by the start of their commissioning at CERN If Tzero = Nov. 1st, then 110 working days are needed (+Xmas holidays): 22 weeks bring us to mid Apr. (barely enough for chamber installation)