[Dsg-ft] [Dsg-mvt] MVT gas usage in EEL

[Marco Battaglieri]

Dear George, dear Stephan,
yesterday we had a meeting with Bob and Eugene to plan the FT 
installation in Hall-B.
We were told that, while in teh hall, we will ONLY use mixed gas (not 
premixed bottles).
This is not consistent with what you mentioned. If this is the case, we 
do not need any bottles since the plan is to move the FT to the Hall at 
the beginning of July with no further tests in the EEL.
Thanks in advance for clarifying  it
Cheers
Marco

Aune Stephan wrote:
>
> Hi George
>
> In order to have gas for this summer MVT and FTT and also in September 
> when we will change one layer of MVT, I calculate the need to order 6 
> bottles.
>
> This is assuming we run this summer:
>
> forward only ~ 28 day (no need further)
>
> barrel 42 day (to align with svt with cosmic) in hall B (need of lines 
> + ad hoc manometer)
>
> FTT (at reduce rate = 4 detector in serial) 56 day
>
> Barrel with new layer 28 day
>
> To this I add 2 spare bottle and I obtain, 15 bottles, I assume 9 are 
> left.
>
> Then the amount to order is 6.
>
> Note that if some are remaining they will be used in Eel for the 
> micromegas test bench, that we have to settle somewhere, to test spare 
> micromegas before exchange if needed.
>
> Thank you
>
> Stephan
>
> *De :*Dsg-mvt [mailto:dsg-mvt-bounces at jlab.org] *De la part de* George 
> Jacobs
> *Envoyé :* jeudi 15 juin 2017 17:29
> *À :* Brian Eng <beng at jlab.org>; dsg-mvt at jlab.org; dsg-ft at jlab.org
> *Objet :* Re: [Dsg-mvt] MVT gas usage in EEL
>
> Please remember that 4 of those pre-mix cylinders in the EEL gas 
> storage cage are reserved for the FT testing in Hall B later this 
> summer. So, the available gas for EEL testing is 2 on the pad and 4 in 
> the cage.
>
> George
>
> On 6/15/2017 10:17 AM, Brian Eng wrote:
>
>     Just so you guys have a count of what is available, there are a total of 10 full cylinders remaining as of this email.
>
>     2 on the EEL gas pad and 8 in the EEL gas shed.
>
>         On Jun 15, 2017, at 8:41 AM, George Jacobs<jacobsg at jlab.org> <mailto:jacobsg at jlab.org>  wrote:
>
>         The MVT gas usage is greater than was originally estimated. This brings up the question, do we need to buy more pre-mixed gas to complete testing? If we do need to order more pre-mix 10% C4H10 in argon, it should be done ASAP due to the long lead time of 4-6 weeks.
>
>         George
>
>
>
> -- 
> George Jacobs
> Jefferson Lab (TJNAF)
> STE 12
> 12000 Jefferson Ave.
> Newport News, VA 23606
> (office) 757-269-7115
> (cell)   757-876-0480
> (email)jacobsg at jlab.org <mailto:jacobsg at jlab.org>
> (website)https://userweb.jlab.org/~jacobsg <https://userweb.jlab.org/%7Ejacobsg>
>
>
> _______________________________________________
> Dsg-ft mailing list
> Dsg-ft at jlab.org
> https://mailman.jlab.org/mailman/listinfo/dsg-ft

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/dsg-hallb_ft/attachments/20170616/697e4b1d/attachment-0002.html>