DØ Run Plan Standard Instructions

Change Log:

• Detector and Other Specific Instructions
• Standard Running Instructions and Shift Tasks
• Contact Information

The Run Plan Standard Instructions can be found at http://www-d0.fnal.gov/runcoor/runplans/runplan_standard.html

The Current Daily Plan can be found at http://www-d0.fnal.gov/runcoor/runplans/runplan.html

Work that causes disruption in data taking during a store or will influence the DAQ at anytime needs to be scheduled ahead of time. Detector, online and trigger groups need to send needs and requests for special running conditions and work to d0runrequests@fnal.gov. The default running condition for a store, unless otherwise specified, is to run with all available readout crates in the global run. Captains are responsible for enforcing the run plans and resolving conflicts. Contact the Run or Commissioning Coordinators if there are unresolved questions.

Requests for access should be sent to d0accessrequests@fnal.gov.

There are new standing instructions for Captains. These involve making sure the Silicon Radiation Monitoring is running, making SAM dataset definitions at the end of a shift and recording the quality of data taken with colliding beam for all subsystems. Also check the Luminosity HV and Monitoring pages for current information.

Detector and Other Specific Instructions

Forward Proton Detector

DØ plans to move the Roman pots in to standard positions most stores not earlier than one hour after the beginning of the store. The MCR and CDF will be notified before pot motion and when it is concluded. The initial positions would be A1U=31.5 mm A1D=33.5 P1U=26 P1D=26.5 with A1=A2 and P1=P2 (previously determined as safe positions), with the beampipe axis roughly at 45mm. Pot insertion will be done cautiously while monitoring losses allowing time to react to an unanticipated change in beam orbit. DØ should be notified of any planned changes in beam position. The pots will remain at these positions for most/all of the store retracting the pots prior to the beam being aborted or machine studies.

Towards the end of the second store (t-4 hours) and some subsequent stores we plan to do studies to attempt to define closer operating positions (including initial dipole pot operating positions), since our acceptance is critically dependence on this. We would like to do these before any BD studies, which will require us to have the pots out and would render our default pot positions unreliable. Approval from BD run coordinator will be obtained prior to these studies. An acceptable new position for now is defined as one that does not increase the D0 losses by more than 10% and the pots will be retracted if CDF complains about high losses related to pot motion.

High Voltage Instructions (Detector and Luminosity)

Luminosity counter phototubes are very sensitive to the presence of the solenoidal magnetic field. Whenever current in the solenoid is changed (turning solenoid ON, OFF or changing polarity) it is the responsibility of the Shift Captain to set the HV on the luminosity counters according to specific instructions outlined below by Gregor Geurkov. Note that the Luminosity HV stays ON at all times, even during beam studies, but the setting of the HV to lower or higher percentages depends on the solenoidal field being off or on.
Setting Luminosity HV
How to tell if the Luminosity information is updating in ACNET

		Beam conditions
Detector	Shifter	Collissions	Injection	Beam studies	No Beam (Calibrations)
SMT	SMT shifter	100%	OFF	OFF	100%
CAL	CAL shifter	100% at all times
ICD	CAL shifter	100% at all times
MUON	MUON shifter	100%	Standby	Standby	Standby
LUM	Captain	50% at all times with solenoid off 70% at all times with solenoid on)
CFT	CFT shifter	---	---	---	---

Forward Muon

Magnets

Contact the Operations Technicians in DAB to ramp the magnets. The solenoid takes about 20 minutes to discharge and the toriod about 10 minutes. The shift captain should check that these are interlocked after they are ramped down.

Plan for Magnet Operations from Dmitri Denisov 10-Aug-2001

1. The Shift Captain is responsible for providing D0 Ops Shifter with instructions on turning D0 magnets ON/OFF or changing polarities.
2. Any changes in magnet currents should occur when there is no store in the Tevatron. The Main Control Room should be notified by the Shift Captain at least 10 minutes before any changes in D0 magnet operating conditions.
3. The polarity of the magnets is to be changed every week. Changes are to be done before the first store that starts after 00:00 o'clock Monday, and will be done independent of the amount of data collected during previous week(s) or any other conditions.
4. Until the 2001 October shutdown the sequence of polarities changes is: (R - Reverse, F - Forward)

   Week of	08/05	08/12	08/19	08/26	09/02	09/09	09/16	09/23	09/30	10/7
   Solenoid	F	F	R	R	F	R	R	F	F	F
   Toroid	F	R	R	F	F	F	R	R	F	R

5. Special modes of operation for the magnets (no field for detector studies, etc.) will be described on a case by case basis in the daily run plan. As soon as such studies are over, we should return to the sequence outlined in step 4. above.
6. In order to reduce operating expenses, the solenoid and toroids should be powered OFF if it is known that collisions are not expected within the next 24 hours. They should be turned ON at least 1 hour before the expected shot setup.
7. During magnet current changes, follow the procedures outlined in the run plan for operating luminosity counters high voltage. No other detectors are known to be affected by magnetic field changes.

DAQ

Standing Instructions and Shift Tasks

The Captain should make sure that the Silicon Radiation Monitoring is running. See the online instructions for details.
(http://www-d0.fnal.gov/~naeema/radmon/shift/procedure.htm)

At the end of a shift, Captains should follow Wyatt Merritt and Heidi Schellman's instructions on how to define a SAM dataset. The definition should define all the runs that are deemed good from the store that should be run through reco.

The default event display d0ve should be run at all times for colliding data
start_daq d0ve

The ROOT version global_monitor examine should be run as well on d0ol04 (Captain's console), as this feeds histograms to the web. See the Captain's guide for details. There have been problems running this examine, but it does work if the instructions are followed closely.

Run Examines and Event displays at all times. In particular:

COOR records the begin and end of runs along with the crate configurations. DAQ shifters must still enter the relevant information in the taker pop-up windows. For details, see the message from Alan Stone. Shifters should take note of the following for each trigger:

 
   Trig Name    Fired rate   AND/OR rate    Prescale 

Captains should summarize the runs taken with colliding beam and indicate their quality:

  
 start  end  run#  trigger  #events  toroid/solenoid  crate list  data quality (good/bad/unknown)  Comments
                                      (off,for,rev)                   (CAL,CFT,CPS,MUO,SMT)

At the begin of stores, the store number should be entered into COOR via

setup d0online

store_begin number.

store_end

Note: If you need to make changes in trigger configurations, contact the Trigger Meisters (Elizabeth Gallas and Levan Babukhadia).

Contact Information