Run Plan for August 2002 HyCal Prototype Test Run

1. Tune photon beam
   • Look at tagger dump viewer
   • Look for a peak on the gamma profiler
   • Check the nanoamp BPM's for beam position
   • Do a tagger harp scan
   • Do a photon harp scan
2. Plateau pair spectrometer
   • Get beam energy
   • Set dipole current
   • Run program
   • Eyeball curves
   • Set voltages
3. Plateau tagger
4. Dipole scan
5. Check and adjust gate timing with respect to MOR
   • TAC
   • HyCal
   • Veto
6. Check TAC health
   • ADC
   • TDC
   • Scaler
   • HV
7. Luminosity scan: same plan as for last June.
8. HyCal gain matching (setting the high voltage)
   1. Have MCC turn off the beam
   2. Use the 2x10**-4 radiator
   3. Retract the photon harp (no converter)
   4. Use the blank primex target
   5. Set up the MOR_20 trigger
   6. Ask MCC for beam current as low as possible (50 pA or lower)
   7. When beam is stable follow the following procedure for each crystal/block
      1. Center the beam on a crystal/block
      2. Take ? events
      3. Look at the ADC spectrum for the crystal/block
      4. Adjust the HV to bring the peak to ? counts
         • For the crystals, the slope is ? counts/V
         • For the block, the slope is ? counts/V
      5. Repeat until the peak is within ? counts of ? counts
      The order of crystals/blocks to be selected is listed at ?.
9. HyCal Calibration (obtaining offline gain constants)
   1. Set up the beamline as was done for gain matching
   2. Start taking data
   3. Scan the beam over the entire HyCal detector. The scan route is described at ?
10. Rate studies
    1. Trigger rate
       • Set up HyCal trigger
       • Scan beam intensity, taking data at each setting
         • note trigger rate
         • note dead-time level
    2. Accidental rates
       • Set up clock trigger
       • Scan beam intensity, taking data at each setting
11. Transition point study
    • Set up beam as for gain matching
    • Put beam at points near transition between crystals and blocks. The list of positions is given at ?
12. Light monitoring system: see Sam's LMS run plan

$Id: run_plan.html,v 1.6 2002/08/26 02:42:29 marki Exp $