Star-fst-l mailing list

[Gerard Visser <gvisser AT indiana.edu>]

hi Felix, Rahul, Zhenyu,
	As far as the cables and T-boards I think this looks basically fine, but I have 
two questions/concerns:

1. It may be difficult to assemble? I don't know - just a question. I suppose 
the sequence is that the detector wedges are mounted first, and then the 
cable/T-board and cooling tubes are brought in. Is it feasible enough to plug 
the hybrids into the T-board and fasten the T-board to the wedge structure? On a 
perhaps related note, should that tab that guides/holds the cooling tube be 
moved somewhere such that it doesn't obstruct the T-board?
If we had to for instance change a T-board/cable at STAR (in extracted position) 
could this be done?

2. Do we have a plan that allows for the cables to be plugged into the 
patchpanel boards while the FST is in extracted position? This is a requirement, 
unless if there is a good reason it is impossible then we should discuss. I am 
supposing that it can be easily done by just peeling the cables out of the long 
Z-direction channels when this is needed. What do you think?

        Thanks,

                Gerard


On 10/5/2020 12:56 PM, Ye, Zhenyu wrote:
> > Begin forwarded message:
> >
> > *From: *Felix Archampong <felixarchampong AT yahoo.com 
> > <mailto:felixarchampong AT yahoo.com>>
> > *Subject: **FW: FST-Cable Assy Pics*
> > *Date: *October 5, 2020 at 10:36:11 AM CDT
> > *To: *"Ye, Zhenyu" <yezhenyu AT uic.edu <mailto:yezhenyu AT uic.edu>>, Yi Yang 
> > <yiyang AT ncku.edu.tw <mailto:yiyang AT ncku.edu.tw>>
> > *Cc: *"Sharma, Rahul" <rsharma AT bnl.gov <mailto:rsharma AT bnl.gov>>
> >
> > Hello Team,
> > Attached to this email is the requested document. This also shows the 
> > clearance between the Beam pipe and the Center Brace. The cable relief is also 
> > indicated in the file (file: FST Assembly.pdf; see page 1 and 3).
> > *Note:*
> >
> >   * We will be using strip ties also to securing the cables where necessary.
> >     Main areas for strip ties usage, as of right now, will be on the aluminum
> >     U channel where the cable bundles are located. Additional strip ties may
> >     be incorporated if need be.
> >   * This document doesn’t show the new scenario of the possible extension of
> >     the mechanical structure indicated at the meeting date Sept. 28, 2020.
> >     This only show the latest CAD file that is in circulation and given to me.
> >     Hence, all information in the document is to check if the final prototype
> >     still falls within the desired numbers.
> >   * Beam Pipe :⌀3.125in, Center Brace: ⌀3.724in, Clearance around Beam
> >     Pipe:⌀.599in. See file FST Assembly. Pdf, page 1.
> >
> > Thanks and have a great day
> > THIS E-MAIL AND ANY ATTACHED FILES ARE CONFIDENTIAL AND MAY BE LEGALLY 
> > PRIVILEGED.