User name X. Jiang
Log entry time 13:31:07 on October 24,1998
Entry number 3449
keyword=y_t plot , but with BeO.
Run 1944, raster test. Air in the path of the beam generate trigger rate of about 200
Hz at I_beam=4.0 uA. From the shape of the y_t, one can figure out the acceptance
shape for each arm. But they do differ.