• 34 out of 63 electronics drawers are installed.
    Out of a maximum of 204 channels, we see:
      -- a preamp pulser signal in 203
      -- a LED signal in 200
    The bad channels: probably loose/faulty HV wiring.
        ==>3 bad channels on single NW drawer - swap it in Oct. for repair
  • 29 drawers arrived at D0 Tuesday afternoon!
    Waiting for special order of capacitors to complete the bases.
        ==>Expect shipment from manufacturer by end of July.
  • First fully adjustable high voltage fanout box in MCH116!
    Some questions about the 1% test point measurements.
    New boards have been made. Next pair of boxes being
    constructed and tested. We still need seven more.
  • ICD "fully" integrated into calorimeter readout.
    The ICD "samples" 8 of 12 crates and 64 of 144 ADC cards.
    Good exercise of calorimeter timing and gain.

            ICD Status    Alan L. Stone   July 26, 2001        





  • PMTs are past their spec lifetime!
    Five PMTs failed during testing or installation. We have less
    than 30 spare Hamamatsu PMTs.
  • One tile module on ECS may need to be swapped!
    Grooves may have been drilled at the end of the run, or fibers
    may be glazed or kinked.
        ==>We have spare tile module ready. Also need to install 1/2 tile.
  • Where is the ICD w.r.t Calorimeter timing?!
    Need to take triple digitized data BEFORE October shutdown,
    with high statistics to populate each sub-tile (100K?).
  • What is the MIP energy deposit in the ICD?
    First, we need to study the noise in the ICD electronics.
    Are the pedestal runs sufficient? Should thresholds be uniform?
    Look at LARGE samples of zero-bias and min-bias data.

            ICD Status    Alan L. Stone   July 26, 2001        


ICD ECS ~11 o'clock (SE15) - Run 124630 (June 30-July 1; Store 559)

            ICD Status    Alan L. Stone   July 26, 2001        

N_entries per ADC bin: (t) Run 124630, (b) L1CalMuon runs July 7-8
50% entries correspond to ICD channels that "fired" for an event

            ICD Status    Alan L. Stone   July 26, 2001        


ICD ECS ~11 o'clock (SE15) Runs > 1hr L1CalMuon (July 7-8) New Pedestals

            ICD Status    Alan L. Stone   July 26, 2001        

ICD ECS ~11 o'clock (SE15) Runs > 30min L1CalMuon    min-bias trigger

            ICD Status    Alan L. Stone   July 26, 2001        

ICD ECS ~11 o'clock (SE15) Runs > 30min L1CalMuon    min-bias trigger

            ICD Status    Alan L. Stone   July 26, 2001        

ICD ECS ~12 o'clock (SE16) Runs > 30min L1CalMuon    min-bias trigger

            ICD Status    Alan L. Stone   July 26, 2001