Hi, Just for record.
in the last two days of D2 running, spin angle seemed to have drifted
to below 30 degrees. in fact could be very close to 20 degrees judging
from ed elastic asymmetries. the sympton is that asymmetries in Parallel
kinematics almost vanish.
I am afraid this is less than optimal for Pzz measurement, T20 and maybe
Gen.
To Shift takers: when running ed_xs.C, you can specify the spin angle by:
root ed_xs.C #### #### spinthd=<value>. theory curves for 20, 30, 32, 35,
37, 40, 45, 47, 48, 50 degrees are built in.
Chi
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