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User name D. Parno
Log entry time 22:47:16 on March 7,2009
Entry number 265203
keyword=LHRS good electron rate for 4I kinematicI replayed a full LHRS run (#20570) for the 4I kinematic (beam at four pass -- momentum setting = 1.42 GeV/c, which we finished earlier this shift. A rough plot of the good electrons is shown in the bottom pane of the figure.
We see roughly 1145 good electrons for a 53.7-minute run. This yields an approximate rate of 0.355 Hz. This is a factor of 2.3 times greater than the expected rate of 0.156 Hz for this energy and momentum setting.
(The run examined was a 15-uA run.)
FIGURE 1
