Finally we are back on line. All systems are working and should be
kept working. So please pay extra attention to various notes/manuals
in the logbook and the counting bay. I'd expect that you should come
to shift well in advance in order to catch up with all the information
and prepare for data taking.
See below for more details on the status
** RUNPLAN next shifts **
_ ABS tuning has priority. Tonight will tune into storage cell looking at
vacuum pressures and blast rates.
_ After abs leaves tonight we should take data for false asymmetry data
with the unpol system, wch on, compton on, holding field on
(transverse field only) and spin flipping every fill. Adjust unpol
target flow to suit statistics.
_ Tomorrow morning a few hours will be spent on additional beam tuning and
then compton tuning. Finish program of today. Analyse false asymmetry
analyse Wch data !
_ Depending on the above steps, tomorrow afternoon we hope to be able to
start asymmetry measuraments with the spin at 90 degrees. A decision
should be made then about the longitudinal holding field.
As of today remaing issues are non crucial, apart from ABS
_ bad ADC/TDC for L0T (try to see if problem is with the cable or with
_ update gain matching for few missing channels
_ RCC3 missing ADC is a DC offset. recheck
Things we could profit from are
_ compton daq in same data stream. We'll make do by starting two runs
at the same time. note, the beam current is the same in both data streams
_ Random spin flipping at the pol source
-- ________________________________________________________________________________ Tancredi Botto, phone: +1-617-253-9204 mobile: +1-978-490-4124 research scientist MIT/Bates, 21 Manning Av Middleton MA, 01949 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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