Make New Entry,
Make Followup Entry
User name M Friend
Log entry time 00:06:26 on October15,2009
Entry number 294968
keyword=Compton run summary
Run 20399: electron only run at 7.0mm, 2 plane coinc, FADC trig on edet,
electron prescale 100%, to check background. Rates very very low (8Hz/uA laser
Run 20400: electron only run moving around the electron detector. Everything
else the same.
Run 20401: electron only run moving around the electron detector. Rates are no
good at -3.0mm. -2.0mm rates still not okay (no difference between laser
locked and unlocked). Okay at -1.0.
Run 20402: edet at -1.0mm. Width strips 2. Otherwise the same.
Run 20403: e-g coincidence run still at -1.0mm, standard FADC trigger, 2 plane
coincidence, prescales 4%, 100%, 100%, width strips still at 2 (95uA).
Run 20404: same as last run, width strips 5.
Run 20406: photon rate check (coincidence run), otherwise same as last run.
(prescales 4%, 100%, 100%, 2 planes, width strips 5). 15uA (with closing slit).
Run 20407: 15uA coincidence run, prescales 4%, 0%, 100%.