hi bill,
could you please make sure that people on shift are taking cosmics
when there is no beam? this is important for neutron bar calibrations.
the procedure is simple:
a) turn on high voltages, turn on DAQ enable override incase one
channel trips.
b) down the COSMICS configuration
c) keep the standard physics trigger
d) start the run (5,000,000 events /run ~ 5 hrs)
--thanks, chris
Bill Franklin wrote:
>Data were collected on unpolarized D2 up until almost noon. All runs have
>been crunched. In the meantime, work was proceeding upstairs to diagnose
>the SFT problem. The South Hall was open for the afternoon for
>ABS-related work and is being secured presently. The spin flipper was
>also prepared for operation during this interval.
>
>Genya reported on ABS group's findings and proposed modifications to SFT
>which will be performed before it is re-installed. These include silver
>plating the leads to improve thermal conductance as the unit is
>overheating. No definite time for re-installation of ABS could be given;
>the absolute earliest possibility would be to start late tomorrow.
>
>Plan for tonight is to run more unpolarized D2. We will also run spin
>flipper tonight in preparation for a measurement to be made tomorrow night
>to measure the spin tune of the Ring (Fuhua, Jan, Townsend, and me will
>carry out). I will set up flipper before leaving.
>
>Beam delivery will cease at 7:00 a.m. tomorrow morning to open Hall in
>preparation for Snake fill and transmitter work. Beam will remain off
>until 20:00 for the transmitter work.
>
>
>
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