Minutes of feedthrough meeting of 4 September, 2001.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Present: Pof, AD, ASD, FH, ML, RKK, PB, JL, TI

*) Milestones

	- Guy Stanford (TRIUMF engineer) and Anne Trudel
	  (TRIUMF safety) have both signed off on Aaron's
	  design proposal for the dye penetrate test shed.
	  Building will commence asap.  UVIC Facilities
	  Management will plumb it into the ventilation
	  system.

	- Final tests for the vacuum test setup to be sent
	  to CERN is are now underway.

	- The last remaining part (an I/O cable) for the 
	  electrical test setup to be sent to CERN arrived 
	  this week (6 Sept).  Testing of the revised VI's
	  and all hardware is underway by John Lindner.
 
*) Tayfun Ince will be working in the ATLAS lab doing
   `pot luck' jobs every Tuesday and Friday from 
   2:30 to 4:30.

*) The ground short on ft01 was repaired with negligible current
   (the needle barely deflected).  We now have no feedthroughs 
   with shorted channels.  Since the short had already appeared
   during the cold tests of ft01, we will repeat (for all channels)
   the cold tests for ft01. 

*) Patrick Cornebise from Orsay has sent an email response regarding
   the damaged coaxial cables on one pigtail harness (13A) of ft12.  
   The kapton insulation can be repaired with a small piece of kapton
   and kapton glue, but he also felt that the ground braid (with
   four or five severed strands) should also be repaired as a
   "precaution", and requested that the harness be sent to Orsay
   for the repair, apparently no understanding that the harness
   cannot be removed from a finished feedthrough.  Pof has sent
   another email to Patrick explaining that it is impossible to
   remove the harness, and asking for further details on the kapton
   thickness and kapton glue to be used for the insulation repair,
   as well as the proposed repair for the ground braid.  It was also 
   pointed out that signals passing through the damaged cable appear 
   to be unaffected by the damage.

*) One leaker PC (S/N 5000 0291 271 0132) was found in the 27 August 
   batch.  The leak was at the 10^-8 mbar-l/sec level, after the first 
   cold cycle, reproducible in three separate measurements last week.
   However, on two subsequent and separate measurments this week, the 
   leak can not be reproduced.  We will proceed with two further cold 
   cycles for this pincarrier and then leak check it again.  It should
   be noted that Glasseal has been unable to reproduce the leak on
   the previous PC returned to them (S/N 5000 0291 227 0126) and also 
   that BNL has found no leakers in the recent batches of pincarrier.

*) The outer ft shipping crate (holding four ft `coffins') is to be
   built this week by Dave Smith.  Foam inpact insulation for the
   interior liner must also be purchased.

*) Roy Langstaff has offered the use of his office (about 100 meters
   from b180) as a 'mail stop' and phone line to be used for
   registering John, Aaron, and Greg.  The ATLAS secretariat must
   be consulted first that this arrangement is ok.

*) Pof will check with Patrick Fassnacht that the office in the
   feedthrough shop in b180 is equippted with a phone.  Patrick
   will also be reminded that we intend to ship four feedthroughs
   in the next week or two, and three of us expect to be coming to
   CERN during the first week of October to set up the reception 
   test equipment.

*) The next LARG week is at CERN on 08 - 12 October.  Pof, PB, and
   JL will probably be at CERN during that period.

*) Before the CERN registration papers are taken to the CERN Users'
   Office, they should first be taken to the ATLAS secretariat to
   ensure everything is in order.

Agenda for next week:
^^^^^^^^^^^^^^^^^^^^^
- Milestones
- pincarrier status (leakers, deliveries, etc.)
- progress on CERN electrical test setup
- progress on CERN vacuum test setup
- progress on outer ft shipping crate
- Plans for the week
- AOB