User name Ulmer
Log entry time 23:01:37 on March23,2000
Entry number 36792
keyword=E-ARM gamma (probe 3)
Gamma constant for electron arm at low field using probe 3 (currently kinematics 31) is significantly different than the current default value: 269.8 MeV/c/kG. In order to keep the database gamma the same, one must scale the B-field in the header file so that the default gamma gives the correct momentum (as judged by the magnet display summary screen).
For kinematics 31: p0 = 374.0 MeV/c
Database gamma = 269.8 MeV/c/kG
--> header file B-field = p/gamma = 1.3862 kG (as opposed to actual probe 3 field of 1.5739 kG).