Forgot to mention:
during data taking make sure the beam spin direction is flipped
fill by fill. You should use hvDaemon1.2
Also make sure that BPHYS? and BDCCT count PHYS*(daq livetime), i.e.
slightly less that PHYS? and DCCT. A simple check is with no beam,
DCCT=BDCCT
Yesterday data was inhibited during ramp/stacking but not the charge,
so they may be useless in terms of false elicity asymmetries.
-- ________________________________________________________________________________ Tancredi Botto, phone: +1-617-253-9204 mobile: +1-978-490-4124 research scientist MIT/Bates, 21 Manning Av Middleton MA, 01949 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^On Tue, 12 Nov 2002, Tancredi Botto wrote:
> > In preparation of ABS we should train ourselves to smaller flows. The > question how does our "junk/bckg" rate drop when the target is 1/5 > smaller (and our elastic rate only 20 %) ? > > _ After NC cosmics, *remember* to put back the ts2_pri.o (default for > strobe mode). See pg 35 > > - Should repeat bacgrkound optimization pg 58, particularly for the septum > results which gave a 20 %. Another 20 % came from slits tuning (pg59) > forget to mention that in prev. email. I guess slits are already good. > > _ debuggin right-sector NC softw. problems would also be nice > > _ Trigger should be elastic_coincs.settings. > > - I guess we should just take data at 0.2 SCCM. Tomorrow the hall will be > open. > > _ If enough progress is made, try also elastic_coincs_nc (its new!) with a > higher flow rate (as trigger permits). You won't see """(e,e'n)""" > coincs in the eep ntuple since that requires two tofs. don't need to > change ntuple.C. I suggest making ntuple_nc.C (....). > Will have people/time tomorrow. > > ________________________________________________________________________________ > 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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