[Halld-tracking-hw] Inner Shell arrived

Tim Whitlatch whitey at jlab.org
Thu Jul 15 07:31:34 EDT 2010


Thanks Curtis,

I will give the feedback to Acumetrics.

Tim

Curtis A. Meyer wrote:
> 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
>
>
>
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