[Hallb-engineering] R3 DC GAS detector pressure is very high

Mac Mestayer mestayer at jlab.org
Mon Feb 5 16:57:18 EST 2018

Hello George;

There seems to be some disagreement about the max. pressure.
Nevertheless, for now, could you or one of the dsg group reduce the
reg.3 flow by half: to 16 slm.
Any performance degradation due to lower flow is much less
harmful than a possible window leak.

Tomorrow, I would like to meet with you and Morgan.

- Mac

"mestayer at jlab.org", (757)-269-7252

On Mon, 5 Feb 2018, George Jacobs wrote:

> Just in case I am the only person to notice, the R3 pressure is way too high. Normal
> pressure is 0.075"wc, current pressure is double that, 0.150"wc. I am concerned window
> damage may occur at this high pressure. A HIHI alarm should go off at 0.125"wc.
> 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
> (website) https://userweb.jlab.org/~jacobsg

More information about the Hallb-engineering mailing list