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Michigan B184 Report February 19, 2004 |
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We made some progress in the last two weeks. 1) Italian group moved out of bld 184 and we cleaned the place they used befor and re-located some of our parts. Barack has been also cleaned and three PCs have been set up there. 2) Three transportation carts have been all mounted and two have been used for flipping the chambers. We have not yet used the third one for EMS4 type chambers due to the space. 3) Alan, Reza, Li have been almost trained. We know how to glue T sensors, cabling and test them. We should have no problem to glue survey targets, B sensor according to what Ed and Curtis instructed, based on the drawing we have. Curtis will make rods for EML3 type chamber, and update the corresponding table for us. Ed updated the program for testing inplane system and T sensors. It's more convenient and simple. 4) We have a new version of check list base on the first chamber we worked on at CERN. This version will be put in our web page. We must strictly follow the check list for our integration and test. 5) We recertified EMS5C16 chamber with helium. Both EMS5C16 and EML3C01 chambers have been flushed for over 4 volume(at 3 bar). For EML3C01 chamber, it's ready for CR test. We took 14 hours data since yesterday evening. we have not yet looked at the data since jeff left for NIKHEF. This morning. the PCs are not ready for running the analysis program, and I have no time yet so far. There was a problem to initialize the mezz cards. Jeff has contacted Tiesheng. Jeff suspect that the CSM we are using may have problem. 6) We are measuring the dark current for EMS5C16 chamber. One sublayer in one sector (8 tubes) has high dark current. HV/SHH cards and single tube continuity have no problem. We will use -HV to treat it first. 7) We cabled EMS5A08 chamber. Next monday, we will move EMS5C16 chamber back to the crate, (EML3C01 has been moved back to crate) and mount ems5a08 to the transportation card. EMS5A08 needs to be recertified with helium. It's urgent to have mezz cards. Bing has requested from Tom. Move each step further appeared to be not easy, however, with the effort from all of us, I feel that we have past the most difficult time and have almost set up what we expected. Before working out 2-3 chambers, I think we cannot say that we are on an normal mass production track. This may still need about one month, I guess. Zhengguo Zhao