Directory name:	          /rta3/jpsi96_11_23/


Stack Start Date:         November 23, 1996
Resonance:                J/psi


Gold stream requirements: Gold stream:
                          [GM1.and.(>2.0GeV invariant mass)]  OR
                          [GM4.and.(>2.5GeV invariant mass)] 

Number of Energy Points:  2 ;  combined all runs into gold0823_0831.dat
                               or /code/gold/g[].dat
     Runs of point 1:     823-831                 [3096.91]       **


** Run 823, 826, 827 and 828:
   Were accidentally included even though the corresponding tapes 
   were overwritten. These runs should NOT be used in any final 
   physics results.

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                    Gold Run Statistics

################################################# gold0823_0831.dat 
Run number:  823
                 Software ID  13:       91 events
                 Software ID  48:      291 events
            Total events for run:      382

Run number:  824
                 Software ID  13:     2693 events
                 Software ID  48:    10261 events
            Total events for run:    12954

Run number:  825
                 Software ID  13:     3017 events
                 Software ID  48:     9159 events
            Total events for run:    12176

Run number:  826
                 Software ID  13:       95 events
                 Software ID  48:      248 events
            Total events for run:      343

Run number:  827
                 Software ID  13:      412 events
                 Software ID  48:     1372 events
            Total events for run:     1784

Run number:  828
                 Software ID  13:      575 events
                 Software ID  48:     1698 events
            Total events for run:     2273

Run number:  829
                 Software ID  13:     1381 events
                 Software ID  48:     4232 events
            Total events for run:     5613

Run number:  830
                 Software ID  13:     9385 events
                 Software ID  48:    28661 events
            Total events for run:    38046

Run number:  831
                 Software ID  13:    10399 events
                 Software ID  48:    32313 events
            Total events for run:    42712

Total number of events for file:    116283




^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Number of DSTs made:      4

     psi inclusive name:  psinc96_11_23.dst
     run numbers       :  823-831
     selection criteria:  The routine that produces them can be found in
                          ~argiro/offline/psip/dst/user_event.f. The 
                          requirements for the event to be written on the 
                          dst file were the following :
                            - Invariant Mass (any combination of clusters in 
                              CCAL) > 2.0 GeV 
                            - Cherenkov normalized signal (for cells which 
                              corresponding to the clusters forming the 
                              largest invariant mass):
                                    2 and 20 ph.e. if Cherenkov is 'back'
                                    2 and 30 ph.e. if Cherenkov is 'forward'
                              For candidate electrons thetas >0.57(rad), 
                              at septum, the summed signals of the octant, 
                              fwd and back: 
                                    2 and 20 ph.e. total


     new psi incl name :  psincnew96_11_23.dst
     run numbers       :  823-831
     selection criteria:  Same as psinc, except allow for misalignment 
                          association between CCAL cluster and Cherenkov cells.


     Clean J/psi name  :  cleanpsi96_11_23.dst
     run numbers       :  823-831
     selection criteria:  Same as psincnew with further requirement that there
                          is an associated H2 signal between 0.1 and 1.8 mip
                          for each CCAL cluster. It is believe there still is
                          a few percent background in this file.


     2 gamma name      :  ggee96_11_23.dst
     run numbers       :  823-831
     selection criteria:  The routine that produces them can be found in
                          ~ceccucci/mara/dst/gam/user_event.f. The
                           requirements for the event to be written on the
                           dst file were the following:
                            - maximum number of clusters in CCAL = 8.
                            - The highest invariant mass of all the 
                              combinations of clusters in CCAL (with at least
                              200 MeV energy deposit) > 2.7 GeV.
                   Note:  No neutral requirements have been applied. Therefore,
                          e+e- events can be used to test efficiency of 2gamma
                          selection/analysis.