Tonight there will be no beam.
Plan on continuning analysis. We found what looks like forward going
protons, so look into this "stuff". We (tb, nm, yx) are convinced that
coplanarity does not help. On the other hand the pion cross section won't
simply peak at one angle, sorry for the confusion.
* for the elastic analysis: we have a number of radiative protons as well
(this time in coplanarity peaks). Does the MC radiate the cross section ?
The target uncertainty (nominally+-20 cm, but 10 cm FWHM since density
goes to 0 at the edges) corresponds to an angle uncertainty of 3-4 degrees
in the forward region. We should make a better calculation. With field
off we can still use this "angle" and the tof.
It's a good time to plot reference "golden" runs: for good statistics
plot everything w/ field on amd off, possibly with the open trigger.
(look into show_protons.C since it only plots certain combinations)
ttl-ttr (time difference)
tpl+tpr (coplanarity)
timediff vs coplanarity
timediff vs adc(L), timediff vs adc(R),
copla vs adc(L), copla vs adc(R),
for 1D plots you can actually superimpose CC cuts
show_protons.C run-#s -d run-#s -c cc_left_only -d run-#s -c cc_right_only
.... PUT the run number and the cut used in the plot... (!)
-- ________________________________________________________________________________ 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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