Hi Doug,
I am still at Jlab and planning to go back to UNH next week.
I was wondering if the chamber is OK with this hot humid weather at
Bates. Do you see any high dark currents?
We had to stop Hall-B experiment because of humidity inside the chamber.
-T
On Fri, 2003-08-29 at 10:03, Douglas Hasell wrote:
> I noticed in the recent shift reports that people have turned L6 down and
> left it down. L6 is the most forward cells on the inner left chamber and
> as such charges the most quickly. This is also the region with the highest
> physics rate. So turning it off really affects the data.
>
> L6 recovers after a while and can hold voltage. The procedure should be to
> turn it down or off for a while and then try to bring it back up. Tripping
> once or twice a fill is acceptable. Leaving it off for an entire shift is
> not.
>
> Cheers,
> Douglas
>
> 26-415 M.I.T. Tel: +1 617 258 7199
> 77 Massachusetts Avenue Fax: +1 617 258 5440
> Cambridge, MA 02139, USA E-mail: hasell@mit.edu
-- Frederick Tong-Uk Lee Senior Research Associate Laboratory of Nuclear Science at MIT tong@lns.mit.edu 26-402 tel: (617) 258-5437 77 Massachusetts fax: (617) 258-5440 Cambridge, MA 02139
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