MuTr Calibration DAQ Procedure

• These "special" runs should be taken when we are not taking data for a good beam store, there is no run with the "Big partition" going, and in consultation with the shift leader (if any).
  • Other non-MUTR standalone runs can be going on simultaneously
  • MuTr HV should be off if there is beam !
• log into phnxrc account on phoncsb; use a fresh window
  • Open a terminal and type : ssh phnxrc@phoncsb
  • Go to the working directory : cd mutr/calib
  • type "docalib.pl &" to start the muTr calibration GUI and punch the "South" button to start a South calibration
  • start a second GUI as above for the "North" arm and punch the "North" button
  • Calibration data taking for south and north have to be run at the same time.
• each should finish in about 20 minutes and progress can be tracked via the GUI progress bar
  • you will also see short messages in the original window from which the GUI was run reporting the progress and how many events were obtained for each run.
  • each DAC setting run stops after 120 or more collected events. The procedure will try up to 3 times at each DAC setting to obtain this many events. If you see it getting only 8 events per run repeatedly than the DAQ is not working and you will need to debug it using standalone run control.
  • you can clean up after a failed calibration by typing "kill.pl S" or "kill.pl N" for South and North respectively. Then make sure that rc -standalone works and try again.
  • a normal calibration run involves one series of runs for each arm with 13 different DAC settings (13 * 4 prdf files should be taken per arm.
• Data will be automatically analyzed with DAQ thresholds and the database being updated and results appearing on the web.
  • at http://www.phenix.bnl.gov/WWW/publish/phnxmutr/calib_results/calib_results.html (takes up to 30 minutes, new directory with the current date should appear in ~phnxmutr/calib/. In that subdirectory, view output.txt to check completion.)
  • status links at the top of the page will contain a list of averages if all went ok, or an error message if not.
  • if results do not appear on the web the samba mount may be down. It can be refreshed by logging into phnxmutr@va032 and checking that the mount to the phenix disks at RCF is good, by e.g. 'ls ../calib_results'. If not ok (you don't see anything), do 'mount /mnt/win/phenix' and give the phoncs password when prompted.
  • you can also use the 'doview' and 'doviewavg' scripts in the calib directory to look at the outputs. (See the scripts for the needed syntax).

• Picutres of calibration GUI at the begining, in progress and after finishing.

More detailed information:

• Long version of DAQ procedure.
• Analysis procedure.