Minutes of feedthrough meeting of 25 June, 2001.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Present: PB, Pof, GV, AD, ASD, FH, ML

*) Milestones

	- 24 pincarriers arrived on 19 June.  The first
	  12 have been cold cycled (three times) and
	  leak checked, and are scheduled to be welded
	  into flanges tomorrow.

	- The GPIB board and IO board have arrived for 
	  the laptop computer to be used at CERN for the
	  electrical tests.  The cable for the IO board
	  is back ordered, and we are still waiting for
	  quoted for the laptop.

	- Aaron finished ALL the metal brackets which hold
	  the feedthroughs in the shipping crates.

*) Ten 50 Ohm pigtail jumpers have been ordered from Axon.
   Delivery is expected in late September.

*) No further vacuum cables have arrived yet.  Pof will contact
   FCI to see what's going on...
   (11/12 boxes shipped arrived on 29 June; when the twelfth
   box arrives, the vacuum cable order will be complete
   barring any defective returns.)

*) Drop tests were conducted with ft-1 in its shipping
   crate to determine whether there is a risk that the
   bellows could be damaged from colliding with the bellows
   braces during an accidental drop.  For these tests, the
   warm flange end of the feedthrough (mounted on its
   shipping crate brace) was lifted above the concrete
   floor at increasing heights (with the pigtail end of
   the feedthrough remaining on the floor) and then dropped.
   A 5g drop-gauge was affixed to the warm flange, but was
   triggered by a drop of only 0.5 cm.  A drop of 6.1 cm
   was sufficient for the bellows to come in contact with
   the bellows braces, but with no consequent damage.  At
   this point, adhesive foam was placed between the bellows 
   and the braces, under some compression.  Several more 
   drops were done up to a maximum of 20.5 cm, and the bellows
   checked for damage after each drop.  No damage was found.
   After the final drop test, the bellows volume of the
   feedthrough was again checked for leaks, and found to
   be still leak free.  A summary of these tests will be
   included as an appendix in the QA/QC document.
   It is intended to place adhesive foam on all bellows
   braces for shipping.

*) Simon from King's Brothers will visit our lab this week
   to answer various questions concerning the shippment of
   feedthroughs to CERN, including physical packaging,
   routing, insurance, and paperwork.  Bonnie, PB, and Pof 
   will be present.

*) We will proceed with building the first HEC feedthrough
   this week, hopefully with time to do the cold tests before
   the upcoming LARG week.

Agenda for next week:
^^^^^^^^^^^^^^^^^^^^^
- Milestones
- Vacuum cables from FCI
- Shipping plans
- Plans for the next two weeks
- Plans for LARG week
- AOB