The coincidence commissioning done was done with this setup:
E = 2.445 GeV; HSRE 23.4 deg, HSRH 53.3 deg; waterfall target
For H(e,e'p) elastic, the spectrometer dipoles were adjusted
by a few percent to study the efficiency across the acceptance
and for optics studies. For the first 3 runs an inefficiency was
observed over part of the acceptance; it was attributed to a recent
error in trigger setup, which was fixed. About 100K events of
coincidences from O16(e,e'p) were taken. Electron arm Cerenkov
detector studies were performed, as well as deadtime measurements.
Bob Michaels (Run Coordinator)