DØ Run Plan Period

Current Situation and Plans

• Stack 'n Store during the weekend, mix of accelerator studies and stores during the week. Periods of accelerator studies will be scheduled by the machine run coordinator on short notice. All shifts are 24/7.
• Trigger list version 12.30 is online from Friday August 29 on. Call the Triggermeisters if rates or global FEB are unexpectedly high, or any problems with the list are observed. Fall back to 12.20 if necessary.
• Special run for CTT firmware debugging: Details are in the special runs folder. Up to one hour at moderate luminosity is needed.
• The Summer/Fall shutdown will begin on Monday, September 8, and last for 10 weeks. An evolving schedule is available.
• Shot setups will be determined by stack size, usually >150 mA and by the Accelerator Operations status. If a store is lost prematurely, a shot may be attempted from a smaller stack ~120 mA.
• The Shift Captain should call the MCR at the beginning of each shift and as needed to keep up with dynamic schedule of the Tevatron. The MCR may give D0 quiet time or a Controlled Access (CA). Page Dmitri Denisov for CA approval. See the whiteboard for CA requests.

Read the D0 Logbook before your shift in order to be better prepared!

Magnet Polarities

(from Tuesday August 26, 8:00)

     Solenoid = Reverse
     Toroid   = Reverse
  

(from Tuesday September 2, 8:00)

     Solenoid = Forward
     Toroid   = Reverse
  

(from Tuesday September 9, 8:00)

     Solenoid = Forward
     Toroid   = Forward
  

For more details click on Magnet Operations

Trigger Configuration

global_CMT-12.30.xml

• Rules for Changing Prescales - choose the prescale set which has a name closest to the Luminosity at the start of the run.
• Available prescale sets for the above trigger are: 
  

      02E30, 05E30, 08E30, 10E30, 13E30, 17E30, 20E30, 25E30,
      30E30, 35E30, 40E30, 45E30, 50E30, 60E30, 70E30, 80E30, and scraping.

  If help is needed with additional prescales, contact the Triggermeisters.
• In this configuration, we see L1/L2/L3 rates of 600-1500/300-800/30-60 Hz, which is primarily a function of the instantaneous luminosity. If the rates are too high - L1>1500 or L2>850 or L3>65 Hz - or the global FEB > 10% - contact the Triggermeister. A good effort should be made to keep the average global FEB rate below 6%.

The DØ Shift Schedule

• D0 Shift Calendar
• All Captain, DAQ and SMT shifts are 24/7.
• Other shifters can be on-call:
  1. if there is no Store,
  2. if MCR states there is no shot setup expected for 4 or more hours,
  3. if the situation with the sub-detector is stable,
  4. if there are no sub-detector tasks to perform (checklist, calibration, special runs, monitoring), and
  5. if the Shift Captain is in agreement
• Calorimeter, Muon and CFT Shifters do not need confirmation from their sub-detector coordinators. However, there are Special Instructions for Muon Shifters and Special Instructions for CFT/CPS/FPS Shifters which must be followed before leaving.
• Shifters must report in with the Shift Captain to give a contact number before leaving.

Recorded Physics Run Limit

• 4 hours

    or


• Inst. Rate
  in Taker < 25 Hz

Global Monitoring: Trigger & Physics Examines

• Main Global Monitoring page.
• Global Monitoring (GM) is being coordinated by Pushpa Bhat, Michiel Sanders and Joe Steele. The GM console, d0ol33, is reserved for the GM shifter during scheduled shifts when there is beam. Useful information, numbers and plots should be inserted into the electronic logbook under the GM tab.
• The name of an institution will be listed next to the GM shifter when the Global Monitoring shift is being run remotely. There is a GM Web Communicator GUI to be used by the Shift Captain, remote GM Shifter, and other shifters as needed. The interface is very simple; shifters communicate via typed text. The gui should be open by default on the Captain console. If not, the gui can be launched with the following command sequence: setup d0online; start_daq gmwebcom.
• Online Data Monitoring - Current status of Online Monitoring and Examine instructions.
• The Shift Captain should continue to run the vertex examine (currently on d0ol27). Michiel Sanders has documented the Vertex Examine Instructions in PDF and HTML. For reference, look at the VE plots entered in the logbook during previous shifts.

Periods Without a Shot Setup or Colliding Beams

• During non-colliding beam, the  zero_bias_3L1L2L3_1out-1.00.xml  trigger should be run with all available crates to exercise the DAQ as long as this does not conflict with commissioning or calibration efforts.
• By default, 'Recording' should be ON as we would like to monitor the full data path from the detectors to tape at the Feynman Computing Center.
• There are three trigger bits with prescales which have been tuned both to exercise the L1, L2 and L3 rates and to send an average of 1 Hz to tape. The prescales should only be changed by or with approval of the triggermeisters.