[Dsg-rtpc] [EXTERNAL] Re: RTPC Cable Length

[Bob Miller]

The gas tubing length discussed below is from the gas panel to the SVT 
mount, where the gas lines will have a bulkhead fitting. There will be 
separate gas lines from the bulkhead fitting to the detector.


I don't know where your detector cables are starting, or ending. 
Therefore, I don't know if basing their lengths off of the gas line 
lengths is appropriate.


Bob



On 11/4/2019 9:06 PM, Carlos Ayerbe Gayoso wrote:
> NOW we have some numbers!!
>
> Thank you Jiwan!!
> ------------------------------------------------------------------------
> *From:* JIWAN POUDEL <jpoud001 at odu.edu>
> *Sent:* Monday, November 4, 2019 9:03 PM
> *To:* Carlos Ayerbe Gayoso <gayoso at jlab.org>
> *Cc:* Brian Eng <beng at jlab.org>; Sebastian Kuhn <kuhn at jlab.org>; Bob 
> Miller <rmiller at jlab.org>; Nathan Baltzell <baltzell at jlab.org>; Eric 
> Christy <christy at jlab.org>; Bill Crahen <wcrahen at jlab.org>; 
> dsg-rtpc at jlab.org <dsg-rtpc at jlab.org>
> *Subject:* [EXTERNAL] Re: [Dsg-rtpc] RTPC Cable Length
> Hello Carlos,
>
> During the test of new gas panel, Bill Crahen sent this about the 
> length of the tubing:
>
> "I just talked to Cyril, and he shows a straight line distance of 
> about 11', so figure perhaps 15' actual length, and shorten your 
> supply line to match.”
>
> So Bill and Bob made the tubing of gas panel at EEL accordingly. I 
> have also cc’ed Bill Crahen, so he might answer it correctly if 
> anything changed!!
>
> Thank you,
> Jiwan
>
>> On Nov 4, 2019, at 8:20 PM, Carlos Ayerbe Gayoso <gayoso at jlab.org 
>> <mailto:gayoso at jlab.org>> wrote:
>>
>> allow me to rephrase Brian,
>>
>> the requested length of the cables SHOULD be (approximately) the same 
>> as the length of the gas tubing between the detector and the panel. 
>> Since that distance is not the shortest one due to all the obstacles 
>> and provisions between those elements (panel and detector), both 
>> (cable and tubing) will share the same path and will be quite longer 
>> than the evident path.
>>
>> I think that length is already (more or less) well determined, but 
>> unknown for many, including me.
>>
>> Cheers
>>
>> -Carlos
>> ------------------------------------------------------------------------
>> *From:*Dsg-rtpc <dsg-rtpc-bounces at jlab.org 
>> <mailto:dsg-rtpc-bounces at jlab.org>> on behalf of Brian Eng 
>> <beng at jlab.org <mailto:beng at jlab.org>>
>> *Sent:*Monday, November 4, 2019 7:44 PM
>> *To:*Sebastian Kuhn <kuhn at jlab.org <mailto:kuhn at jlab.org>>
>> *Cc:*dsg-rtpc at jlab.org <mailto:dsg-rtpc at jlab.org> <dsg-rtpc at jlab.org 
>> <mailto:dsg-rtpc at jlab.org>>; Bob Miller <rmiller at jlab.org 
>> <mailto:rmiller at jlab.org>>; Nathan Baltzell <baltzell at jlab.org 
>> <mailto:baltzell at jlab.org>>; Eric Christy <christy at jlab.org 
>> <mailto:christy at jlab.org>>
>> *Subject:*Re: [Dsg-rtpc] RTPC Cable Length
>> Bob has already provided the length between the electronics and the 
>> gas panel, so that part is established.
>>
>> As for the connectors I only ordered enough for 1 level of disconnect.
>>
>> What we don't have yet is the length from the panel to the detector.
>>
>> ________________________________________
>> From: Sebastian Kuhn <kuhn at jlab.org <mailto:kuhn at jlab.org>>
>> Sent: Monday, November 4, 2019 7:20 PM
>> To: Brian Eng
>> Cc: dsg-rtpc at jlab.org <mailto:dsg-rtpc at jlab.org>; Nathan Baltzell; 
>> Narbe Kalantarians; Bob Miller; Eric Christy; Hattawy, Mohammad
>> Subject: Re: RTPC Cable Length
>>
>> Dear Brian,
>>
>> we briefly discussed this issue at today’s BONuS12 engineering 
>> meeting. Basically, there are several possible intermediate steps to 
>> consider: The cables that are fixed to the probes should have 
>> connectors for easy installation together with the RTPC. The second 
>> step would be from those connectors to the gas panel. Finally, my 
>> understanding is that the crate containing the electronics for the 
>> gas system controllers will be some distance away (but on the same 
>> space frame level), on the North Side. (Nathan, please correct me if 
>> I’m wrong). I don’t know what that distance is, but maybe some of the 
>> other people cc’d on this email can answer.
>>
>> Greetings - Sebastian
>>
>> On Nov 4, 2019, at 9:55 AM, Brian Eng <beng at jlab.org 
>> <mailto:beng at jlab.org><mailto:beng at jlab.org>> wrote:
>>
>> Hi Sebastian,
>>
>> Do you have this information? If you have the length between the gas 
>> panel and the detector I can just add that to the length Bob is 
>> providing.
>>
>> Who is fabricating the RTD cable? I'd assume we (DSG) are, but best 
>> to make sure before we order anything.
>>
>> Thanks
>> --
>> Brian Eng
>> Detector Support Group
>> 757-269-6018
>>
>> Begin forwarded message:
>>
>> From: Bob Miller <rmiller at jlab.org 
>> <mailto:rmiller at jlab.org><mailto:rmiller at jlab.org>>
>> Subject: Re: RTPC Cable Length
>> Date: November 4, 2019 at 7:14:43 AM EST
>> To: Brian Eng <beng at jlab.org 
>> <mailto:beng at jlab.org><mailto:beng at jlab.org>>
>>
>> Hi Brian,
>>
>> I can get you a cable length for the gas panel tomorrow.
>>
>> Please contact Sebastian Kuhn about detector cables.  He was in the 
>> Hall last week and came up with a plan, I don't know if he considered 
>> RTDs.
>>
>> Thanks,
>>
>> Bob
>>
>> On 11/1/2019 6:02 PM, Brian Eng wrote:
>> Hi Bob,
>>
>> Is there a distance for the cables calculated yet?
>>
>> We need one for the cables between the cRIO (on SFL1N that we moved 
>> to) and the gas panel and also one for the cRIO to the detector 
>> itself (for RTDs).
>>
>> Thanks
>>
>> --
>> Bob Miller
>> Hall B Lead Engineer
>> Jefferson Lab
>> 757 822-9586
>>
>>
>>
>>
>>
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>
-- 
Bob Miller
Hall B Lead Engineer
Jefferson Lab
757 822-9586

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