17:10 

0) Jet Turns On !!!!!

   Accumulator Current = 15.6 mAmps

   Jet Parameters P=3PSI, T=18K => Density = 8.4e+12, Cluster speed = 520 m/s

1) Charged trigger summary

   Fix HV for H1, H2, Cerenkov : file HV_ONBEAM.DAT

   H1, H2, and Cerenkov aligned.

   Two Body trigger defined as:

     (H1_i*H2_i) * (H1_j*H2_j) for i not equal to j

   One Body trigger defined as :

     (H1_i*H2_i) 

   NB H2 is the sum over four counters corresponding to the H1 counter

   Signals are timed to the Charged MLU with respect to the MinBias strobe.

     Out 3 of the Charged MLU = One Body

     Out 4 of the Charged MLU = Two Body

   NB Counting starts from 1.

2) Neutral Trigger Summary

   set HV for CCAL : hv_e835_sept10.dat

   MinBias strobe is defined as any octant in any ring > ~ 100 MeV.

   PBG OR 1 is defined as a strict BACK to BACK

   PBG OR 3 is defined as a loose  BACK to BACK

   cluster thresholds (enter PBG OR 1 and PBG OR 3) are ~ 1 GeV

   Out 1 of the Neutral MLU = PBG OR 1

   Out 2 of the Neutral MLU = PBG OR 3

   not implemented as of 2 am

     Out 3 = Total Energy (high threshold) 

     Out 4 = Total Energy (low threshold)

   Signals are timed to the Neutral MLU with respect to the MinBias Strobe.

3) Radiation Monitor Calibration (from Mike Church)

    50.000 Counts on the Counters = 2.5 mRad

Please note the count at the end of every stack in the logbook!

Current dose to the calorimeter:

     B0 : 63.461 / 50.000 x 2.5 mRad = 3.17 mRad
     B1 : 54.572                     = 2.73 mRad
     B2 : 65.502                     = 3.28 mRad
                                       ---------
     Average dose for first stack    = 3.06 mRad

4) A 26 KHz and 1 KHz oscillation (~ 1 mVolt on Octant sum, ~ 2mVolt 
on Ring Sum) are present.  On the Total energy this corresponds to a
coherent noise of ~ 50 mVolt = 50 MeV.  Petros Rapidis stated that this
is due to the accumulator quad bus and decreases with energy.
        
Suggestions for George in the morning:

1) Make a cable which unites the Charged and Neutral MLU outputs at the 
Master MLU.

2) Time the MinBias strobe to the Master MLU (from LeCroy 365 AL in N Trig 
            Nim Crate below the Yellow Summer Box)
   (needs to arrive 15 ns after the C/N MLU Output Leading Edge at the 
        Master MLU)

                     Peter Maas (w apologies to Ezio for any inaccuracies)
                        
 aka:
                              Irv Pelton
                 The Voice Crying in the Wilderness Department

I can be found in the wilderness via LDP (630) 722 4817.