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User name Lindgren
Log entry time 05:40:08 on April 01, 2008
Entry number 229291
keyword=Partial Shift Summary
Changed calibration coefficients to match BCM current reading with MCC
Harp scan done
Centered beam on BeO
1 ua on Carbon See Log book entry for photograph of scalers
DE Rates varied from 15 to 200 KHz, Higher rates correspond to the lower PMTs
E rates varied from 2 to 25 KHz, Higher rates correspond to the lower PMTs
1 ua on BeO Rates roughly doubled compared to above
1 ua No Target, Rates dropped roughly by a factor of 100
Turned on Raster
Put in 6 cm LH2 target no collimstor
High voltage tripped on E and dE PMTs
Turn on one PMT Count Rate is 800 KHz.
Perhaps beam may not be aligned well enough with target center.
Also 2 mm x 2 mm may be too large
Put C target back in
Take quasi elastic data in L HRS. Run 2101
Look at histogram of data along x. See Quasi elastic peak.
Degauss Q3 Lower current to 0 and raise to 1400 A. Regulate back to
original value.
Take another quasi elastic run on C. Run 2102