[Clas12_photon] Forward Tagger Cabling and Services

[Marco Battaglieri]

Thanks Bob and Eugene for your prompt reply
Let's have the first discussion with Bob next week at 10:00AM 
(JLab-time) and postpone the discussion with Eugene to the 
next-to-the-next week.
Stepan, as usual, will kindly start the meeting.
Cheers
Marco

Bob Miller wrote:
> Hi Marco,
>
> I am available for the meeting next Wednesday at 10 am ( I assume this 
> is Jlab time).
>
> Thanks,
> Bob
>
>
> On 7/19/2013 6:06 AM, Marco Battaglieri wrote:
>> 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,
>>>
>