I can come in on Tues to investigate L15. In the mean time - can someone
just check L15 on the scope in the DTunnel to see if we have a signal
there from each tube?
Pete
On Sun, 13 Mar 2005, Chi Zhang wrote:
>
> left TOF 15 does not seem to be triggering. this can be confirmed by
> loading any lr file and say
>
> lr->Draw("ntl", "ntl>-1")
>
> this can explain the low yield in e'p. this also knocks out most stat for
> ed elastic in parallel kinematics. perpendicular kinematics has tiny
> asymmetry at low Q2, so this precludes Pzz measurement with the runs taken
> so far.
>
> Chi
>
> On Sun, 13 Mar 2005, Electronic Log Book wrote:
>
>> Operator: vziskin
>>
>> The shift started with 100 mA injected beam. The polarization appears to remain low as noted by Michael. At 14:30 we went to a higher injection current (150 mA) per Genya's agreement. The target holder temperature sensors are show high temperature and currently off scale. At the same time the cold head and the cell temperatures show little difference. When we went to higher current the temperature PID control went berserk and I turned it off since it really does not do anything. The ligit, which was dropping slowly before the injection current increase, has jumped and once in a while shows large vacuum excursions. However, the beam appears to be well behaved with low BQMs, scaler rates and high lifetime.
>>
>>
>>
>>
>
----------------------------------------------
Pete Karpius
Graduate Research Assistant
Nuclear Physics Group
University of New Hampshire
phone: (603)978-6152
FAX: (603)862-2998
email: karpiusp@einstein.unh.edu
http://pubpages.unh.edu/~pkarpius/homepage.htm
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