User name R. Michaels
Log entry time 14:25:37 on March 8,2006
Entry number 165796
This entry is a followup to: 165795
keyword=helicity errors rare.Well, I do NOT see "lots" of helicity warnings in run 2773.
Instead I see two, one near event 70K and one near 180K, and
the reconstructed helicity is shown in fig 1.
I claim this is a typical result if you analyze the data correctly
as explained in halog 165128.
It is true that there is a low rate of helicity errors where the
QRT "appears" to jump in time. The present hypothesis is these are
due to missing bits in a clock, and Richard Holmes is working
feverishly to make use of the redundant time info to reduce to zero
the incidence of these inconsistencies (there is apparently no
problem with QRT signals in hardware, according to scaler DAQ and
according to HAPPEX DAQ). In any case, there are not "lots" of
errors.
FIGURE 1
