[Clas12_rich] RICH electronics- summary of space needed

[Matteo Turisini]

:-) no problem!

Please consider the patch panel drawings are preliminary, 
their position is definitve, but the organization of the elements within each panel and between the panels can change.

Thanks,

Matteo


> Il giorno 26 lug 2016, alle ore 16:41, Eugene Pasyuk <pasyuk at jlab.org> ha scritto:
> 
> Oops! Ignore my message. They are 32 channels not 36.
> Sorry.
> 
> -Eugene
> 
> From: "Eugene Pasyuk" <pasyuk at jlab.org>
> To: "Tyler Lemon" <tlemon at jlab.org>
> Cc: "Serguei Boiarinov" <boiarino at jlab.org>, "Matteo Turisini" <matteo.turisini at gmail.com>, "clas12 rich" <clas12_rich at jlab.org>, "Patrizia Rossi" <rossi at jlab.org>
> Sent: Tuesday, July 26, 2016 4:39:34 PM
> Subject: Re: RICH electronics- summary of space needed
> I've just received from Valery the drawings of the patch panels.
> They have 72 HV connectors each. You are going to use A649 adapters which have 36 channels. So for each side of the detector you need two adapter boxes. All together you need 4 of them. In your layout you have 5 boxes. My question is: what is the purpose of the fifth one?
> 
> -Eugene
> 
> From: "Eugene Pasyuk" <pasyuk at jlab.org>
> To: "Tyler Lemon" <tlemon at jlab.org>
> Cc: "Serguei Boiarinov" <boiarino at jlab.org>, "Matteo Turisini" <matteo.turisini at gmail.com>, "clas12 rich" <clas12_rich at jlab.org>, "Patrizia Rossi" <rossi at jlab.org>
> Sent: Tuesday, July 26, 2016 2:53:34 PM
> Subject: Re: RICH electronics- summary of space needed
> Not quite.
> There is no 32U available in C3-5. There is no reason to try squeezing  everything in one rack. 
> VXS crate and fiber distribution box will have to go to different rack. Either C3-6 or may be on level 2. I am waiting for RICH box drawing to see the location of the patch panels to find optimal routing for cables and fibers.
> As Matteo pointed out in the last message 4U fiber distribution panel accommodate 2 RICH detectors.
> It also might be possible to mount HV distribution boxes vertically under existing CAEN crates. We have some of our distribution boxes mounted that way. 
> Anyways, I don't see a problem with location of RICH1 CAEN crate and HV distribution. If there is the second RICH and if one CEAN crate is not enough we can put the second CAEN with distribution in C3-7.
> We will find a place for VXS crate and fiber distribution box.
>  
> -Eugene
> 
> From: "Tyler Lemon" <tlemon at jlab.org>
> To: "Serguei Boiarinov" <boiarino at jlab.org>, "Eugene Pasyuk" <pasyuk at jlab.org>, "Matteo Turisini" <matteo.turisini at gmail.com>, "clas12 rich" <clas12_rich at jlab.org>
> Cc: "Patrizia Rossi" <rossi at jlab.org>
> Sent: Tuesday, July 26, 2016 2:02:44 PM
> Subject: RICH electronics- summary of space needed
> Hello,
> 
> From my understanding, the following is all of the electronics components in rack C3-5 for the first RICH sector and their dimension:
> 
> RICH 1 Components in Rack C3-5:
> 
> Component
> Height [U]
> VXS crate
> 11
> CAEN power supply
> 8
> HV distribution
> 5
> Fiber Distribution
> 4
> Empty space for ventilation 
> 4
> TOTAL
> 32
> 
> 
> RICH 2 Components in Rack C3-7:
> 
> Component
> Height [U]
> CAEN power supply
> 8
> HV distribution
> 5
> Fiber Distribution
> 4
> Empty space for ventilation 
> 4
> TOTAL
> 21
> 
> 
> It looks like in rack C3-7, there will be the 21U for RICH 2's components.
> 
> However, it looks like it will be a lot tighter fit for the first RICH sector's electronics in rack C3-5 since there is only 23U available. Regarding this:
> 
> Would it be possible to drop the existing HV supply in C3-5 down a few U to make space?
> Matteo had mentioned that the Fiber distribution might be able go behind the VXS crate. Is this still a possibility?
> Would the CAEN HV mainframe be able to go on top in the rack so there is nothing on top of it and open to the air?
> Considering these questions, it might still be possible to fit the components for RICH 1 in rack C3-5 with a little bit of rearranging of what is already there.
> 
> Best regards,
> 
> Tyler
> 
> 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/clas12_rich/attachments/20160726/545e5740/attachment-0001.html>