Hi Pete,
I would like to use the 4 spare PMTs and bases for the backward angle
scintillators.
Ben.
Peter Karpius wrote:
> I began to address the problem of attenuating the flasher today. With the
> help of Billy in the machine shop we created a threaded coupling that
> allows
> attachment of our existing attenuators to the main input of the splitter
> box. With no attenuation the photodiode signal in the D-tunnel is ~62mV.
> I was able to achieve 18mV, 12mV, and 5mV with various attenuators. As
> one example of TOF signal. RTOF2bot gave a flasher signal of 6 V on the
> scope without attenuation. With the "18mV attenuator" I saw 2 V for this
> TOF. As all the TOF signals for the flasher are different I think the
> next step is taking data. I will try this on Monday after Karen checks
> the DAQ with physics triggers.
>
> Also, I searched for and found spare/used PMTs and bases. I found what I
> believe to be 4 spare PMTs and 4 spare bases. I also found 4 "used" PMTs
> as these were unwrapped/marked as bad. I found one base marked as bad.
> I put the spare PMT's, still in there sealed boxes, on top of the cabinet
> in the BLAST counting bay. I put the spare bases in the cabinet. The
> used tubes and bases were placed, for now, on the table next to the Sun.
> (not the actual sun mind you!)
>
> Pete
>
> ----------------------------------------------
> Pete Karpius
> Graduate Research Assistant
> Nuclear Physics Group
> University of New Hampshire
> phone: (603)862-1220
> FAX: (603)862-2998
> email: karpiusp@einstein.unh.edu
> http://pubpages.unh.edu/~pkarpius/homepage.htm
> ----------------------------------------------
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