> Hello all, > > Over the past several days, RHIC has performed reasonably well, with > six stores since late Monday evening after the day of beam studies and > peak ZDC coincidence rates typically around 4-6 kHz. AGS polarization > measurements at flat-top are still in development... After recovery > from the latest QLI, the intent is to follow Angelika's original > schedule for the upcoming holiday weekend: > > Wed Nov 21-Sun Nov 25 0600 RHIC Au-Au 200 GeV/u production > Sun Nov 25-Mon Nov 26 0600 RHIC Au-Au injection collisions > Sun Nov 26 0600 END OF RHIC AU RUN > Mon Nov 25 Booster/AGS Maintenance (restart c. 2200) > Mon Nov 25-Thu Nov 28 1400 RHIC Maintenance, Booster/AGS pol protons > Thu Nov 28 1400 1400 START OF RHIC POLARIZED PROTON SETUP > > A brief Injection Energy Au-Au run plan for Sun Nov 25 is attached, as > discussed in meetings yesterday and today. Weather predictions are for > cool temperatures and light showers, so the meteorology indicates a > good four more days of the run! Happy Thanksgiving to one and all, > bountiful collisions, and safest travels to Angelika as she returns to > Scheduling Physicist duty on her morrow's flight! > > -Todd > -- > --------------+-----------------------------+----------------+------------ ----- > Todd Satogata | BNL C-A Accelerator Physics | (631) 344-5826 | satogata@bnl.gov > --------------+-----------------------------+----------------+------------ ----- ---------------------------------------------------------------------------- ---- > ---------------------------------------------------------------------- > Injection Energy Au-Au Run Plan > ---------------------------------------------------------------------- > > (*) RUN TIMING > - 0530 Sun Nov 25 Start MCR preparation/organization > - 0600 Sun Nov 25 Start beta*=3m injection/evaluation > - c.0800 Sun Nov 25 Steering, trigger/background evaluation > - 1100 Sun Nov 25 Meet 911A MCR: beta*=3m go/no-go (20-30 min) > - c.1200 Sun Nov 25 Start production 22 GeV Au-Au run > - 0600 Mon Nov 26 End of RHIC Au Run > > (*) EXPERIMENTS > - PHOBOS: Robert Pak / Mark Baker > Scaler 7 Paddle coincidence (PP>3*PN>3*(PP*PN.narrow)) > - PHENIX: Achim Franz / Paul Stankus / Ed O'Brien > Scaler ? BBC coincidence > - STAR: Bill Christie / Tonko Ljubicic / Hank Crawford > Scaler 9 Low threshold CTB Multiplicity coincidence > Scaler 10 Medium threshold CTB Multiplicity coincidence > Scaler 11 High threshold CTB Multiplicity coincidence > - BRAHMS: Flemming Vidabaek > Scaler 5 BBC/clock coincidence > Scaler 6 BBC left > Scaler 7 BBC/right > Scaler 8 BBC coincidence (no clock) > > (*) MACHINE ISSUES > - beta*=3m lattice (spin1 ramp), beta*=10m lattice backup (ramp21) > - Inject 55 bunches, wait for experiment turn-on, cog into collisions > - Fill intensities 35-45 x 10^9 ions (below ecloud limit) > - No gap cleaning required; experiments may want to be off at dump > > - Store periods and voting scheme TBD > - Expected store lifetimes are 20-40 minutes > > - Rerun "setup injection" every time for new fill # > - Tuning required for experimental magnets on/off > > ---------------------------------------------------------------------- >
This archive was generated by hypermail 2b30 : Wed Nov 21 2001 - 20:38:21 EST