General DAQ

All what is written below should be done on hadesdaq computer.

Start acquisition

Button "Blue_Arrow_Down"->"Fast DAQ start". After a successfull ctu start, the sound "alle parameter..." should be played (if sound server is enabled).

Start data taking

Button "Blue_Arrow_Down"->"EvtBuild Start (Lustre ON)"

Start Event Builder without data taking

Button "Pingu_with_injection"->"EvtBuild Start to /DEV/NULL"

Stop acquisition

Button "Pingu_with_injection"->"Stop Hades DAQ". Normally it is not needed, just use "Fast DAQ start". Only for threshold setting.

Monitor the DAQ

Button "Blue_Arrow_Down"->"DAQ monitor". Use only one DAQ monitor! There is no need to stop the daq monitor, it it restarted after a daq start. If you want to copy some info from monitor to logbook, you should use button "Blue_Arrow_Down"->"DAQ monitor short for the logbook"

Sound monitor

Disable the sound alarms with: "Blue_Arrow_Down"->"Clear running sound until next ctustart". NEVER switch off the sound speaker, the sound is important!

Meaning of the sounds:
  • "Alle Parameter...": DAQ is started and should run
  • "Schutzschirme brechen zusammen": Permanent busy, have a look to the DAQ monitor, restart the DAQ
  • "Automatik unterbrochen": Eventbuilder is running, but no data is written (e.g. spill break?)

Changing file prefix

  • Button "Blue_Arrow_Down"->"Change Event Builder Prefix".
  • Close Event Builder windows
  • Button "Blue_Arrow_Down"->"Fast DAQ start". (Wait until DAQ is restarted)
  • Button "Blue_Arrow_Down"->"EvtBuild Start (Lustre ON)"

Where do we write the data?

  • Local hard disk: lxhadesdaq:/data/lxhadesdaq/sep08/
  • Lustre: /lustre_alpha/hades/beam/sep08/
  • Tape archive: hadessep08raw, directory: hld

Links for DAQ/QA operator

  • ButWereAfraidToAsk)?topicparent=DaqSlowControl.GeneralDaqOperation" rel="nofollow" title="Create this topic">Everything You Always Wanted to Know About QA Check List (But Were Afraid to Ask)


  • Include/exclude subsystems: lxhadesdaq:/home/hadaq/apr07/oper/subsystems_for_daq
  • Change water marks: lxhadesdaq:/home/hadaq/apr07/oper/eb_netmem.conf
  • Writing to disk/lustre/tape: lxhadesdaq:/home/hadaq/apr07/oper/eb_netmem.conf

daq_evtbuild, daq_netmem

You can always find the used arguments in lxhadesdaq:/home/hadaq/apr07/oper/

-- SergeyYurevich - 25 Sep 2008
Topic revision: r15 - 10 Aug 2011, RafalLalik
This site is powered by FoswikiCopyright © by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding Hades Wiki? Send feedback
Imprint (in German)
Privacy Policy (in German)