Gembeam log first

RUN #	Source/Cosmic/Pedestal	Date	Start Time	End Time	HV	# of events	notes
531	Pedestal	Apr 21 2011			3.850V		Good pedestal run : [| ADC vs. chan number ], [Mean vs. chan number ] [RMS vs. chan number ]
532	Cosmics	Apr 21 2011			3.850V		Try cosmic with only one paddle. Not successful
533	Cosmics	Apr 21 2011	14:38	15:30	3.850V	1103	Make coincidence between small paddle and bottom half of "E" plane, Raised the voltage on the scintillator paddle to 2.15V during run to increase rate. Gem1 hits with good x and y = 52 good x1 = 59 Good y1 = 92 Gem2 hits with good x and y = 47 good x2 = 49 Good y2 = 118 Gem3 hits with good x and y = 99 good x3 = 111 Good y3 = 192
534	Cosmics	Apr 21 2011	15:31	16:20	3.850V	12356	Before run start increase gas flow from 0.2 to 0.4 at flowmeter Gem1 hits with good x and y = 102 good x1 = 110 Good y1 = 141 Gem2 hits with good x and y = 46 good x2 = 49 Good y2 = 122 Gem3 hits with good x and y = 92 good x3 = 102 Good y3 = 166
535	Beam	Apr 22 2011	11:21	12:03	3.850V	52111	Start run before beam and took about 1100 events with no beam. Took data at 1uA with He target. Gem1 hits with good x and y = 7620 good x1 = 8342 Good y1 = 11666 Gem2 hits with good x and y = 5454 good x2 = 6189 Good y2 = 10321 Gem3 hits with good x and y = 2616 good x3 = 2945 Good y3 = 6287 Hit in all planes = 1580 Good x2 and y2 = 5454 with good x1 = 4136 eff = 0.758343 Good x2 and y2 = 5454 with good y1 = 4390 eff = 0.804914 Good x3 and y3 = 2616 with good x1 = 2023 eff = 0.773318 Good x3 and y3 = 2616 with good y1 = 2084 eff = 0.796636 Good x1 and y1 = 7620 with good x2 = 4268 eff = 0.560105 Good x1 and y1 = 7620 with good y2 = 5526 eff = 0.725197 Good x3 and y3 = 2616 with good x2 = 1966 eff = 0.751529 Good x3 and y3 = 2616 with good y2 = 2159 eff = 0.825306 Good x1 and y1 = 7620 with good x3 = 2139 eff = 0.280709 Good x1 and y1 = 7620 with good y3 = 3473 eff = 0.455774 Good x2 and y2 = 5454 with good x3 = 1988 eff = 0.364503 Good x2 and y2 = 5454 with good y3 = 2933 eff = 0.53777