[Clas12_photon] Forward Tagger Cabling and Services

[Eugene Pasyuk]

I am not available next week.

-Eugene

----- Original Message -----
> From: "Marco Battaglieri" <battaglieri at ge.infn.it>
> To: "Eugene Pasyuk" <pasyuk at jlab.org>, "Bob Miller" <rmiller at jlab.org>
> Cc: "clas12 photon" <clas12_photon at jlab.org>, DEVITA at ge.infn.it, "Andrea Celentano" <andrea.celentano at ge.infn.it>,
> "Daniel Watts" <daniel.watts at ph.ed.ac.uk>
> Sent: Friday, July 19, 2013 6:06:24 AM
> Subject: Re: [Clas12_photon] Forward Tagger Cabling and Services
> 
> 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,
> >
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