Need to look at TDC offset for RTOF3 now. Adding 50V should have caused
the transit time in the PMTs to be reduced. By how nuch? This is a
change of V of dV/V ~ 50/2500 = 1/50. Transit times are ~ 30 ns. So
were talking 0.6 ns ... rounds off to 1 ns.
On Sat, 6 Nov 2004, Electronic Log Book wrote:
> Operator: adrian
>
> Runs 12373-12382 taken. Crunching...
> Run 12377 is shorter (CODA crashed - rebooted ROCs remotely).
>
> RTOF3 shown in Chris' recent efficiency picture seemed to have a problem. I tracked it down, the scalers for the bottom tube were consistently lower. Other tubes seemed lower too, but an ADC study of the recent hydrogen runs showed only RTOF3 bottom to be going down continuosly.
> Added an extra 50 volts on that tube during run 13282 (and Aaron rebooted HVGUI right after that run, so the changes should have taken effect).
>
>
>
>
>
-- John R. Calarco Dept. of Physics Univ. of New Hampshire Durham, NH 03824 phone: (603)862-2088 FAX: (603)862-2998 email: calarco@unh.edu
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