D0 Run Plan Period

From: DAY Tuesday May 27, 2003 Through: OWL Tuesday June 03, 2003

Run Plan Index


Current Situation & Plans Magnet Polarities Trigger Configurations & Prescales Beams Division Schedule & Status	Global Monitoring D0 Shift Schedule Run Limits Periods Without Shot Setup or Colliding Beam

Special Notes

Shifters: Run, Store and Pause Transitions (12 May 2003)

Shift Captains: Prescales and Data Taking Efficiency (12 May 2003)

Shift Captains: Beam Halo at D0 (1 May 2003)

Other Links

Current Situation and Plans

One of the power poles providing the Lab with electricity is damaged and requires replacement which will take 3-4 days. There will be two power outages:

The first power outage is scheduled from 07:00-07:30 on Tue May 27 in order to switch power from the main sub-station (where defective power pole is) to Kautz Road sub-station.
The second power outage is from 07:00-07:30 Fri May 30 after repairs have been made to switch back to the main sub-station.
System experts and/or shifters should cleanly bring down systems during the May 27 (after store ends) and May 30 Owl shifts.
Shift Captains and DAQ Shifters should refer to the procedures on Power Outage Recovery.

We will open the cathedral area of the D0 detector on Wed May 28. We will start opening the detector (both CFs) at 08:00 and should be ready for access by 12:00. We will start closing at 08:00 on Thu May 29, and should be finished by 12:00. During opening and closing, access to the collision hall will be restricted to people approved by Russ Rucinski. Detector group leaders are responsible for final system checks before and after closing on Thursday.

The Tevatron with NOT be operating from 07:00 Tue May 27 through 08:00 Fri May 30. This assumes the pole repairs are made on schedule, weather permitting. During this period, the D0 Collision Hall will be in Supervised Access.

Anyone working inside the D0 Collision Hall must have current training in the following:

D0 Hazard Awareness

LOTO 1

Radiological Worker

More Information on D0 Training.

Only the Shift Captains and Ops Shifters are authorized to issue Supervised Access (SA) keys and log the keys into/out of the computer log.

Users should sign out & in with the paper log.

There are a finite number - 60. Do not hold your key all day long if you are not actively in need of it.

Expect to be paged or called if you leave D0 - for lunch or for the night - with your SA key!

Two-man rule applies. Do not work alone.

Supervised Access Procedures for the D0 Collision Hall.

Expect a shift or two of recovery and stacking. Next post-SA shot setup will likely be on Owl Sat May 31.

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.

Non-Expert FPD Shifter Operations are now performed by the Shift Captain.

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 08:00 May 27)

   Solenoid = Reverse
   Toroid   = Forward

(from Tuesday 08:00 June 03)

   Solenoid = Reverse
   Toroid   = Reverse

(from Tuesday 08:00 June 10)

   Solenoid = Reverse
   Toroid   = Forward

For more details click on Magnet Operations

Trigger Configurations

global_CMT-11.04.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: 05E30, 10E30, 13E30, 15E30, 20E30, 25E30, 30E30, 35E30, 40E30, 45E30, 50E30 and 60E30. If help is needed with additional prescales, contact the Triggermeisters.

In this configuration, we see L1/L2/L3 rates of 600-1200/300-800/30-60 Hz, which is primarily a function of the instantaneous luminosity. If the rates are too high - L1>1400 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 D0 Shift Schedule

D0 Shift Calendar

All Captain and DAQ shifts are 24/7.

Shifters can be on-call:

if there is no Store,

if MCR states there is no shot setup expected for 4 or more hours,

if the situation with the sub-detector is stable,

if there are no sub-detector tasks to perform (checklist, calibration, special runs, monitoring), and

if the Shift Captain is in agreement

Calorimeter and Muon Shifters do not need confirmation from their sub-detector coordinators. However, there are Special Instructions which Muon Shifters must follow before leaving.

For the SMT & CFT/PS/FPS sub-detectors, the Shift Captain will need approval from their sub-detector coordinators (Eric/Breese or Fred/Jadzia respectively) before releasing the shifters:

Special SMT LV+HV Instructions which SMT Shifters must follow before leaving.

Special CFT/CPS/FPS Instructions the CFT Shifters must follow 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.