From wagner@fnal.gov Tue Oct 30 17:06:00 2001 Date: Tue, 30 Oct 2001 11:02:31 -0600 From: Bob Wagner To: mukherjee@fnal.gov, ambrose@fnal.gov, Morris Binkley Subject: Thoughts on remaining COT endplate work Below I compare the present CDF access schedule and Ken's knee surgery schedule with known remaining tasks on the COT face. Since there is no reasonable window for the SL4-227 "cracking" and the SL8-104/105-S9 sorting, I propose we postpone these until another time. Present schedule on WEB when there is access for COT work: 1.Final check and re-baggie (1 day): Tue 11/6 2.COT N2 purge (2 days): Wed 11/7 to Th 11/8 3.Silicon (cold) + COT checkout (4 days): Fr 11/9 to Mon 11/12 4.Close plugs and start Ar/Et purge (2 days): Tu 11/13 to Wed 11/14 ------------------------------------------------------------------------- Ken's Knee Surgery: Friday November 2 9:00 am Pre-surgical physical. Tuesday November 6 4:00 pm Pre-surgical meeting Wednesday November 7 TBA Surgery -------------------------------------------------------------------------- Potential COT work for 10/30 and beyond: 1.? Crack open SL4-227 --> Try to find problem with ch 0, 1, 3, 4, 5. --> Since the only COT access time overlaps with Ken's knee surgery, I would rather postpone "cracking" for a later time. We still need to install the HVDB and ASD DB and button up the area. 2.?SL8-104/105: try to isolate which has bad S9 (both disabled now). --> This will take some time and likely baggie access with Ar/Et in the chamber, which is definitely not allowed for in the present schedule (no open plug time with Ar/Et). 3.Wrap of Al / bubble-wrap over SVX and L00 cables. --> Can do when "SVX moves" and beampipe installation complete. 4.Fix short in LSE 5a +3v. --> Obviously must wait until EAST plug is open. 5.Look at three high occ or high mult spots (SL1-151-01, SL3-061-01, SL7-223-00) with HV in N2 and Ar/Et. (They don't look "hot" using calibration pulses with HV off). --> This involves "Spy" work during high voltage tests. We may or may not be allowed in the pit during HV tests with Ar/Et due to Tevatron power supply tests. Obviously, a long access is not needed to observe the three wires.