On Shift: Peter Maas, Giulio Stancari

Plan: Continue taking data at 3604 (search for the eta c')

Summary: Inherit run 868.  At noon, notice that BPMs are not being
read by the W77 program.  Data acquisition hums along.  

Integrated Luminosity:
        Runs 864 - 867 : 746 nb-1
                   868 : 173 nb-1 *
                   869 : 161 nb-1
                   870 : ongoing

                 0800                  1600
====================================================
Beam Momentum   ?????? MeV/c          5909.8 MeV/c
Beam Current      17.6 mAmps            13.6 mAmps
Beam Lifetime     34   hours            33   hours
Livetime          98.0 %                98.2 %


Detailed Summary:

At 08:30 we decide to mount the tapes.  Discover that the tapes in the drives
not being written to are already written.  Since tapes for 867 are not in the
storage drawers, assume that these tapes correspond to 867.

NB WHEN A RUN FINISHES, REMOVE THE TAPES IMMEDIATELY AND LABEL THEM 
   CORRECTLY.

At 11:00, notice that the W77 program cannot read the BPMs.  Call the
MCR and am told that Jim Morgan is on call.  Page Jim Morgan ... he
answers the page at 12:30.  He reboots the BPM front end, after which
the W77 program crashes on the square root of a negative number.  Jim
then realized that he forgot to load a parameter.  After the parameter
is loaded correctly (the beam momentum), the program restarts.

Note that between 1100 and 1330, there will be no ACNET information.
 
During this shift we cleaned all the tape drives with the exception of
Drive 10 which contains the CALIB tape. 

                              Peter Maas