From gilg@lbl.gov Tue Jan 28 16:33:43 2003 Date: Mon, 27 Jan 2003 17:47:44 -0800 (PST) From: Murdock Gilchriese To: SCT hybrid/module at LBL , Alessandra Ciocio , Steve Dardin , Vitaliy Fadeyev , Murdock Gilchriese , Fred Goozen , Carl Haber , jasnow@lbl.gov, Jeremey Lys , Frank McCormack , rapowers@lbl.gov, Rhonda Witharm Cc: bill@scipp.ucsc.edu, Felix Rosenbaum , Alex Grillo , Mark Anderson , Abe Seiden Subject: Minutes of SCT meeting January 27,2003 The usual summary files are at http://www-physics.lbl.gov/~gilg/SCTWeeklyMeetings/Jan272003/ In addition, I have attached the current LBNL personnel schedule(and this will be posted in the cleanroom). Hybrids started as of end last week 59 In last week 1 Hybrids up to fanout bonds 40 In last week 3 Modules started as of end last week 18 In last week 4 Modules test complete 3 In last week 0 General note. We need to improve the communication between the people staying until 6PM and later and those that arrive early in the morning. I have put a "Daily Log" into the cleanroom and ask that those staying later write down a wish list/to-do list for the earlier crew in sufficient detail. Please also keep the module status board up to date. Hybrid status See Test_and_Channel_Summary.xls. 59 hybrids have chips mounted or are being mounted. 49 are OK. Sandra will distribute a separate message describing the problems with the other 10. 40 hybrids have been completed up to fanout bonding. More emphasis in the last week has been placed on fanout bonding and less on chip mounting, hence fewer hybrids started than usual. We have chips in hand for the hybrids in hand. Another 32 hybrids were shipped today from Japan. Plan is for LBL to keep 16 of these for assembly and send the other 16 to UCSC for assembly. UCSC will ship more chips in the next day or so for the 16 to be kept at LBNL. Note that LBL will also send to UCSC hybrids that need chip replacement. There was a discussion of which hybrids to use on modules. Hybrids with "old" fanouts have problems resulting in 20ish bad channels. We need to see if we are introducing problems with hybrids with "new" fanouts. So from now on we will alternate use of hybrids with "old" fanouts and with "new" fanouts(hyrids with serial numbers >36, sorry I can't remember). P018 should be built with a "new" hybrid, if possible. No progress at AMA. Carl will call again. Bonding The aim is to keep bonder #1 going as much as possible with hybrid chip and fanout bonding, apart from module bonding as required. Try to use bonder #2 for hybrid chip bonding but still needs work. Carl and Rhonda working on it. Bonder #3 is not yet operational. Module Assembly Assembly is proceeding now using two fixtures, A0 and A1. A2 is being qualified this week, we hope. P13 and P14 sent to testing. P15 - had problem on Friday with hybrid folding fixture, will try again today(was done). P16 - ready for IV before hybrid P17 - in oven, then metrology starting today P18 - just started Module testing Again see summary and separate note for Sandra. I did not have time to go over testing during meeting(apologies) but will start with testing next meeting. Fixtures Hybrid folding with single fixture will soon become bottleneck and we need to replicate the folding fixture. I would like to try this also on the other SmartScope to free up SmartScope time. Will see if possible. Mark, Rhonda and Fred in communication regarding what is missing at UCSC. Note that our local(ie. Fred's) prioritities are pixel system test fixturing and keeping module assembly going at the top, all else is lower at the moment. So making a schedule is not easy. Next meeting is February 3.