Log entry time 19:17:47 on March 12,2004

Entry number 79101

RC Summary

Wednesday, 10 Mar. day
through
Wednesday, 12 Mar. day

• Beam off for maintenance period.
  
  

Achievements and events

• Most things on task list of yesterday were completed, aside from:
  
  
  
  • Incident in cooling water in North Linac caused one more day of
    maintenance period.
    
  • SMS fast dump protect ... Steve Williamson is still working on it.
    
  • G0 Harp signal noise ... At least Arne Freyburger had a look at it.
    He reported to Steve Williamson that the harps themselves
    are at least functioning more-or-less correctly.
    
  • G0 Harp PMTs ... Paul King reported that these are now patched out
    of the Hall in a round-about route thanks to him and Bill Vulcan et al.
    But no software or readout for these yet.
    
  • Using G0 Halo monitors to readout harps ... Paul King found some harp
    scans done when we were taking data. Looks like this is possible. Paul
    will make a log entry on this. Steve
    Williamson reported that Arne Freyburger has offered to write software to
    conduct and analyze harp scans using the halo monitors. We should
    pursue this.
    
  • G0 Target was successfully cooled down 3/12 and we are staffing
    shifts.
    
  • Physics beam available 3/13 swing.
    
  
  
  
  

Plans

• Parity Quality Check (1 shift). Plan submitted by Kaz Nakahara.
  
• Usual LH2 running with longitudinal beam until Monday morning.
  
• Monday 9:00-15:00 spin dance and retune for transverse running.
  
• Assuming t
  

• If longitudinal parity quality has not been established by
  Monday 7:00, we will delay the spin dance and transverse running by one week.
  
• Even if this happens, Reza Kaizimi will likely request a few hours of
  testing retuning in the Wien filter section with large Wien angles, to get
  experience for eventual transverse running.
  
• If a transverse tune in the Wien section cannot be established, we would
  likely also fall back to delaying transverse running by a week. Acceptable
  in this case is good (>65%) transmission through the injector with greater
  than 30 uA.
  

• coil pulsing run (15 mins) requested by Gary Rutledge
  
• French electronics checkout with beam (few hours, parasitic) requested by
  Christophe Furget.
  
• Harp scans (no well-defined plan, yet; depends on some results of above)
  

Concerns and Their Resolution

• Spikes in the French timing spectra appear from time to
  time. Under investigation by Jacques Arvieux and Sarah Phillips.