[Clas12_photon] Forward Tagger Cabling and Services

[Marco Battaglieri]

Dear Bob and Eugene,
it seems that something is moving on the side of defining services and 
other ancillary components necessary to correctly install the FT and its 
services in CLAS12.
We propose to have next FT bi-weekly meeting on that issue and review 
what we did and what still need to be done:
https://clasweb.jlab.org/wiki/index.php/07/24/2013_Meeting
I hope that Wednesday July 24th 10:00AM (usual time of FT meeting) works 
for both of you. If it does not, please let us know and we may found an 
alternative day/time to discuss th open items.
Cheers
Marco and Raffaella






Eugene Pasyuk wrote:
> Guys,
>
> We are looking into the location for the FT Hodo front-end crate. I am trying to figure out the dimensions.
> Here is what I get from Andrea's recent presentationhttps://clasweb.jlab.org/wiki/images/e/ee/Celentano-29_5_2013.pdf  
> Correct me if I am wrong
>
> The height of the mezzanine panels is 6U=10.5", width 4HP=0.8"
>
> Width. of all 16 slots 16x0.8=12.8". Let's take 15" as total width needed for the crate.
> Height. 6U=10.5" Let's take 11". Do we need fans? This will add 1 or 2U.
> Depth. seems like 8" would enough. It is not clear to me how the fibers will be connected. Should be some enclosure where fibers, HV cables, LV cables, Ethernet cable are coming enter in a light tight fashion.
>
> So, I get 15x11x8 in. Or if I add fans that would be 15x14x8 in. Does it look reasonable?
>
> And one more question. Page 3 show a photograph and a drawing of PCB. Photograph show Lemo as output connectors while drawing has multi-pin connector. Which option will be implemented.
>
>
> -Eugene
>

Bob Miller wrote:
> Hi Marco, Raffaella, and Kevin,
>
> We are currently reviewing the spaces between each of our detectors 
> and I would like to verify the cabling and services for the Forward 
> Tagger to make sure we have enough room between the HTCC and the 
> region 1 drift chamber.
>
> The Forward Tagger TDR Version 2.0, dated December 2012 lists the 
> cabling and services on page 97.  Are these numbers still valid? My 
> notes from the review were that the FT-Trck gas and cooling line sizes 
> were not firm.
>
> Thanks,
>