[Clas12tdg] Rack location meeting

[George Jacobs]

Hi All,

Do we have anything showing the proposed cable tray locations for the 
detectors? The DC signal and HV cable lengths are fixed, so we need to 
make sure the locations will work with those lengths. What is the exact 
distance, well +\- 10% is likely OK, that these cables need to go from 
the rack location to reach the detectors? If we choose rack locations 
without knowing the path length, the cables may not work.

Thank you,
George

David Kashy wrote:
> Hi All,
> If you received this mail via clas12tdg then you are on the mailing list.
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>
> Now that this is done, here is the harder part.
>
> At todays TDG meeting we had some discussion about rack locations for 
> 12GeV. We need to get started on this issue and firstly need to 
> resolve the location for the two new super conducting magnet rack 
> sets. In total we need 3 racks worth of space for each magnet for the 
> vendors equipment and we also need up to one full rack for each for 
> our part of the controls.  The Dump resistors must be installed near 
> the power supplies.
>
> I guess I need to know from each detector physicist the location and 
> number of racks needed for each system. Also if you have a plan for 
> removing un-needed racks that are already installed or emptying the 
> equipment from them.
>
> Attached are 4 pictures that show each level of the space frame at 
> present we have shown only 3 racks on the subway level, but we could 
> probably add 2 more on the north side.
>
> On level 2 for some reason the racks on the south side for the 
> cryotarget have not been modeled, but those need to stay so it is not 
> a big deal now.
>
> Levels 1 and 3 are pretty clear and should be clear to all of you.
>
> I hope we can get lots of info before this meeting. Please help!
>
>
> Thanks
> Dave
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-- 
George Jacobs
TJNAF
12000 Jefferson Ave.
Newport News, VA 23606

(office)757-269-7115
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