Thanks Chris-
Pete
On Tue, 16 Nov 2004, Chris Crawford wrote:
> here's an update on the TOF RT3. from the last 20 runs, it was 98.5%
> efficient, so there is no need to fix it. also, the repaired TOF LT5 is
> now 97.2% efficient.
> --chris
>
> Chris Crawford wrote:
>
> > integrated over the last 2 weeks, they are at least 90% efficient,
> > probably 95%. although i'm not very sensitive to the forward tofs
> > yet. are the light guides still tied to some rope so they do not fall
> > down and break something?
> > --chris
> >
> > Taylan Akdogan wrote:
> >
> >> On Fri, 12 Nov 2004, Adrian T Sindile wrote:
> >>
> >>
> >>
> >>> Hi!
> >>> Taylan called me and I pointed him to the TOF repair web page.
> >>> He graciuosly offered to mount the PMT on LT5 following the web
> >>> instructions, as neither Pete nor I could be at Bates during the day
> >>> today...
> >>>
> >>> To try and fix the RTT3, which Michael reported as having the
> >>> lightguide at a different angle, the whole group of 4 TOFs needs to
> >>> be taken out with a crane, RTT3 needs to be separated and then
> >>> glued, cured overnight and put back the next day. As it is now, it
> >>> still gets data (but it should be fixed ASAP).
> >>> If the two techs whom we trained for this (Chris and Dave?) are not
> >>> around anymore, Pete and I can come and fix it whenever there is
> >>> plan on opening the hall for half a day (Monday, Tuesday? Just let
> >>> us know)... and then come and put them back the next day. Data
> >>> taking will probably have to stop for those two days (4 TOFs
> >>> missing)...
> >>>
> >>
> >>
> >>
> >> How inefficient are they? Unless they are completely inefficient,
> >> which seems not to be the case, we should wait the weekly
> >> maintenance day for this.
> >>
> >> Taylan
> >>
> >>
> >>
> >>
>
>
----------------------------------------------
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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