Re: CDC hardware costs

[Tim Whitlatch <whitey@jlab.org>]

Hi Curtis,

I will address each item below....

Curtis A. Meyer wrote:

Thanks Tim !

   I will incorporate those into my document. I assume that 
we need to order about 50% extra on individual pieces
to make sure that we can reject defective ones. That probably
means ordering 5000 instead of 3500 of any particular piece.
  

I believe 10% would be plenty. If the vendor does not give us acceptable parts, we send them back. The higher cost for these parts is due to the tight tolerances.

   We have also been investigating other materials such as 
Dlrin and Carbon Fiber for the down stream endplate. The 
maching probably stays the same, but in the case of Carbon
fiber, there may be a cost associated with procurement. Namely,
we can't identify a vendor that could may a 4ft by ft by 4mm thick
sheet of carbon fiber. Would you have any idea of where one might 
get that?
  

There are companies that can do this. I will investigate.

    I am also assuming that the raw materials for the end plates are
in addition to the the 20k, but probably this is about 1k.
  

The $20K includes material

    Latstly, Can you hazzard a guess as to what it would cost to have 
someone come and measure the crimp pin positions at both ends of the
chamber to a 40micron accuracy?
  

We have the capability here at JLab. When it is complete, it can be shipped here and measured. Or if required, we could probably send someone to you with the portable Coordinate Measuring Machine to do it there. I will contact our Survey and Alignment group.The only additional expense in that case would be travel

Cheers,

       Tim

    Thanks again for the numbers!  Curtis

On Wed April 4 2007 07:43, Tim Whitlatch wrote:
  

Curtis,

Attached is a document showing the rough order of magnitude costs for 
various components.
Also, would it be correct to assume an IC board will be bonded to the 
upstream plexiglass plenum?

Cheers,

       Tim