Hi, TOF experts!
I just subscribed to this list, hope it works.
John told me today we are going to have to test for efficiency using a
setup similar to the one we used in the DTF: a sandwich composed from the
start counter and a small paddle on the outside of the test scintillator.
I started setting up everything and as of 8:00 PM the situation is the
following:
- the start counter (which is physically on the left) is now hooked up to
the right TOF 15 (last one, I will use numbers starting from zero, it
seems it is common practice now); to do this, I unhooked it from a delay
unit (left sector), I hope this is alright since we are not concerned
about timing for now; the HV cables for the start counter are in the same
position and we do not care where we get voltage from;
- I placed 5 small paddles on the left sector TOFs: on TOF # 0, 1, 2 and #
14 and 15; I hooked up the small paddles using cables from the bottom PMTs
of detectors # 4, 5, 6 and # 12 and 13 respectively (the reason I am
writing this email is basically to have the above numbers someplace where
all of us can find them);
There might be problems with the setup, some PMTs of the small paddles had
more than 2 connectors and we might need to switch some cables.
The CCR guys are searching the South Hall righ now. When they are done I
will start putting voltages on the paddles and look at signals, then
create a proper trigger...
If everything is OK, I will start taking runs to get statistics for the
efficiency tests.
Adrian
-------------------------------
Adrian Sindile
Research Assistant
Nuclear Physics Group
University of New Hampshire
phone: (603)862-1691
FAX: (603)862-2998
email: asindile@alberti.unh.edu
http://einstein.unh.edu/~adrian/
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