04/20/00 Owl Shift Summary:
 (Log Book: #7, p.87-92)
 On shift: PZ, WR
 Data Type:  chi0 (Ecm=3411 MeV)
 Beam current at start: 37.1 mA . Beam current at end: 28.0 mA .
 Typical Luminosity: ~ 2.1 - 2.2 x 10^31 cm^-2s^-1
 Run: 5512 (276.9 nb-1) inherited
      5513 (279.8 nb-1)
      5514, 5515 stopped, data overwritten
      5516 in progress
 
  Comments:
      For most parts a very smooth run. 

    1:45 found that the Gas jet density was not recorded on the lumberjack
         plotter (GJ102) between 0:12 and 1:30. After that it reappeared (?)

    6:06 start of run 5514: tapes and files logger windows were not
         updating. Hundreds of warnings on DYCs. Had to reset the run
         several times. Decided to stop run 5514 at 6:15. 
    6:30 'drt_fresh_start -b data' for run 5516 after tapes and file
         logger still didn't update. Runs 5514 and 5515 overwritten. 

    7:10 - 7:15 reset DAQ 3 times within ~ 1 min. 

    7:25 Straw HV tripped, Reset HV. 

    
    Overall we did several DAQ resets due to BAD_EVNTNUM Buffer for
several DYCs. During the whole night the beam momentum kept showing the
same peculiars peaks as during the evening, but no beam was lost during
these peaks. But the values are not believed to reflect the true beam
momentum according to operators in MCR, AP10, etc.... 

    - Have a nice day, 
      PZ, WR