[Dsg-halla_gas] Fw: SBS/BB GEM gas distribution

[kagnanvo]

Hi Marc,

Thanks for the precision,

that exactly what I needed as information. 500 cc/ min is more than we need

Best  regards

Kondo

On 12/18/2019 10:43 AM, Marc Mcmullen wrote:
> Hi Kondo,
>
> Thanks for reviewing the documents. The flow rates for the Dwyer RMA - 
> 12 and 13 (flow meters listed on the parts list) are given in flow per 
> minute. For example, George has FMV1 to FMV4 at 500 cubic centimeters, 
> this would be 500 cc per minute.
>
> Marc
>
> ------------------------------------------------------------------------
> *From:* Gnanvo, Kondo (kg6cq) <kg6cq at virginia.edu>
> *Sent:* Wednesday, December 18, 2019 7:05 AM
> *To:* Kondo Gnanvo <kagnanvo at jlab.org>; Marc Mcmullen <mcmullen at jlab.org>
> *Cc:* Evaristo Cisbani <evaristo.cisbani at roma1.infn.it>; Liyanage, 
> Nilanga -- Nilanga Liyanage <nilanga at jlab.org>; Liyanage, Nilanga K 
> (nl8n) <nl8n at virginia.edu>
> *Subject:* [EXTERNAL] Re: [Dsg-halla_gas] SBS/BB GEM gas distribution
> Hi Marc,
> Thanks for the work done. I think it is pretty consistent with the 
> discussions at the few meetings we had before. I just verify (see 
> attached) that the scheme would satisfy the most demanding GEM layers 
> of the SBS experiments. Which is good.
>
> I just have one technical question about the flow-meters and 
> transducers specifications. When you have numbers like 500 cc, 750 cc 
> and 1000 cc, what does it mean exactly about the maximum capabilities 
> of these devices?
> I am asking that because 1000 cc = 1 L basically and for example one 
> of the UVa GEM module (not layer) has a capacity of 5 L and will run 
> at a minimum of a volume change per hour which means 5000 cc / hour so 
> if the FM and FT are specified to 500 cc, what does that mean? Similar 
> concern for the INFN layers.
>
> Can we run safely at these flow rates with these devices. It is just a 
> naive question from me to understand the numbers because I am ignorant 
> of big gas system like this, I am not challenging the choices
>
> Thank for the clarifications
> Best regards
> Kondo
> ------------------------------------------------------------------------
> *From:* kagnanvo <kagnanvo at jlab.org>
> *Sent:* Tuesday, December 17, 2019 6:40 AM
> *To:* Marc Mcmullen <mcmullen at jlab.org>; Gnanvo, Kondo (kg6cq) 
> <kg6cq at virginia.edu>
> *Subject:* Re: [Dsg-halla_gas] SBS/BB GEM gas distribution
>
> Dear Marc,
>
> May I ask you to please send the document to me through my UVa email 
> address "Kondo Gnanvo <kg6cq at virginia.edu> <mailto:kg6cq at virginia.edu>".
>
> For some reason jlab seems to block any attached document that is 
> destined to me
>
> Thanks
>
> Best regards
>
> Kondo
>
>
>
> On 12/16/2019 11:53 AM, Marc Mcmullen wrote:
>> Hi Nilanga, Kondo, and Everisto,
>>
>> George has completed the preliminary P&I for the distribution panel 
>> and a components list (see attachments). If everyone can take some 
>> time to review the documents and provide comment, we can move forward 
>> with mechanical drawings and procurement. If all interested parties 
>> can send comments to this email list, I will compile them and we can 
>> meet in January to have a discussion.
>>
>> Before we start procurement, Jack, Brad, and the design authority 
>> will need to approve of the design/components.
>>
>> If there has been any significant progress on the development of the 
>> detectors, please send an update to this email list, so that we may 
>> stay abreast of the advancements.
>>
>> Regards,
>> Marc
>>
>>
>>
>>
>>
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