[Dsg-ltcc] Sector 5 leak testing

[Marc McMullen]

Hi Mauri,

We would rather wait another day or so. Yesterday was the first day 
after replacing the solenoid. It is possible that the only gas recorded, 
was the amount required to fill the lines. Last night we had a low 
pressure (storm) system. Today should be a high pressure swing. We need 
to get that data plotted to see how the system reacts.

We will report our findings later this week. If possible Dave may want 
to check the connecting joints on the Sector 3 line. It is not holding 
pressure and fills frequently (every 15 minutes at best).

Thanks,

Marc


On 9/12/2017 11:36 AM, Maurizio Ungaro wrote:
> Hi Marc,
>
> Thank you that is good news. Looks like it is similar to sector 4 leakage. Not sure if you want to wait another day, but I would imagine things would not change much. Can we connect the lines back to sector 5?
> It would be nice to see the effect of David's patch.
>
> Looking forward to sector3 rates as well.
>
> Thanks,
>
> Mauri
>
>
>
>> On Sep 12, 2017, at 11:12 AM, Marc McMullen <mcmullen at jlab.org> wrote:
>>
>> Hi Mauri,
>>
>> We received the replacement solenoids for the LTCC valve panel early, so Brian and I installed one on sector 5 yesterday. This would be a couple of weeks earlier than we anticipated. We studied the leak rate overnight and recorded 1 liter of flow which is about 3.5% of the sectors standard leak rate when the detector is connected. We will continue to monitor that rate to see an average over a few days.
>>
>>
>> -- 
>> Marc McMullen
>> Detector Support Group
>> 757-269-7738
>>
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-- 
Marc McMullen
Detector Support Group
757-269-7738