Minutes of feedthrough meeting of 3 September, 2002. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Present: Pof, PB, WW, AD, FH, RKK, ML *) Milestones: - Four T48 pigtails (s/n 6587, 6606, 6608, and 6611) were returned to Orsay for repair on Thursday 29 August. They each had a damaged socket on the ATI connector at channel 50. - Wendy has served her last day working with us! Her contributions to the group have been very valuable, but now it's back to the grind of lectures and exams. *) Michel reported on what he has learned about the ECC status. In a nutshell, the two likely scenarios for the ECC 'stopper' repair are to either partially or fully open the cryostat to perform the repair. In either case, this must be done with the cryostat in an 'axis vertical' orientation, which presents potential problems on how to prevent the superinsulation from falling off when the inner vessel is lifted out. Another proposal is for the cryostat to be returned to SIMIC for the repair, where the tooling is available to allow the cryostat to be opened in an 'axis horizontal' orientation. How the repair is to be done will hopefully be sorted out during next week's LARG meeting in Paris. *) We have agreed to finish building, cabling, and testing the last three feedthroughs without waiting for the results of the LAr pollution test of the replacement micro-D material which has been postponed to November. In a worst case scenario (if the pollution tests fail) we would have to reopen the three feedthroughs to replace the failed pigtail cables. After repening, all feedthrough parts are re-usable except for the funnels, of which we still have four spares. The first of the three feedthroughs is a Standard, already cabled and ready to weld. The second, an FCAL, can be cabled as soon as time allows. The third, another Standard, is still held up for lack of pigtail cables. When finished, these three feedthroughs will remain at UVIC until the results of the pollution tests are known. *) Some space in the UVIC feedthrough lab will be given up for a new cleanroom to be built for Dean Karlen. We will start moving out of that area this week. *) We plan to send twelve feedthroughs (eight Standard/Specials and four HEC) to CERN this fall for testing. Storage space at CERN, however, is getting very tight, so we might end up storing some of the feedthroughs in the feedthrough shop at CERN. Using the HEC module storage area directly opposite the feedthrough shop is apparently no longer an option, since that area has now been turned over to the magnet group. Even the HEC modules have been evicted from that area and are now being stored out in the open! Agenda for next week ^^^^^^^^^^^^^^^^^^^^ - Milestones - Progress on ft lab reorganization - Plans for testing (and storing) ft's at CERN this fall - Plans for the week - AOB