[Halld-tracking-hw] Inner Shell arrived

[Curtis A. Meyer]

Hi Tim and Slava -

    the inner shell and rings arrived safely at CMU. They look really nice!
We carried out our inspection outside the clean room today, and will
move the rings and shell into the clean area tomorrow and look at dry
fits into the endplate. You did a really great job in making these.

    On another note, we checked 100 of the acumetric crimp pins. Of
these, we were able to get our 20-micron wire through 70 of them, and
it could not be forced through 30 of them. For the 30 that failed, there
appeared to be a single blockage about 3/4 of the way in (or 1/4 depending
on your orientation). We tried the wire from both ends and it appeared to
be a single blockage in each. For the 70 that we could get the wire through,
it went through fairly easily, but compared to the Medelec pins, the inner
surface felt a little "rough".

     For the plastic parts, we are collecting all of our numbers and 
data together
in one place to try to make a single "coherent" statement about them. 
This is
going to take us a little time to get done as we have a goodly number of
measurements to look at and digest.

    Lastly, with regard to the ID of the straws, our support element 
that we use
during cutting is 0.6106. This leads us to believe that the ID of the 
straws is
about 0.611. We are also over-nighting some straws to you. They should 
arrive
by Friday.

    Curtis



-- 
Prof. Curtis A. Meyer		Department of Physics
Phone:	(412) 268-2745		Carnegie Mellon University
Fax:	(412) 681-0648		Pittsburgh PA 15213-3890
cmeyer at ernest.phys.cmu.edu	http://www.curtismeyer.com/