Shutting Down MIDAS DAQ ----------------------- The following procedure describes a 'cold' stop of the DAQ. Normally one would only need to perform steps 1 to 2. 1) If possible, stop data acquisition MIDAS Data Acquisition Experiment Control -> select STOP 2) If possible, quit data acquisition MIDAS Main Menu -> select Quit From the Quit Session Confirmation pop-up window select -> Yes 3) If possible, stop TapeServer. The TapeServer is normally run from a terminal session on tuda2. In the command window where the TapeServer was started enter CTRL-C The TapeServer should respond confirming that its processes have received an INT signal. MIDAS Tape Driver (5615): Received INT signal; exiting. MIDAS Tape Driver (5614): Received INT signal; exiting. MIDAS Tape Driver (5613): Received INT signal; exiting. Starting MIDAS DAQ ------------------ The following procedure describes a 'cold' start of the DAQ. Normally one would only need to perform steps 5 to 9. 1) Login to Sun Blade 100 workstation - tuda2 ISAC-II Experimental Hall user: tuda password: 2) Switch off the VME crate. Wait 20s. Switch on the VME crate. After a short delay (c. 20-30s) you will observe significant network load on the Allied Telesys 8-port switch on top of the TUDA 19" racks whilst the Lynx operating system is downloaded to the MVME 2431 CPU and the DAQ application is loaded. 3) Open (another) command window on tuda2. Enter the commands cd /MIDAS/TapeServer/SunOS ./master This will start the TapeServer process which should conclude with messages of the type MIDAS Data Link (5821): MIDAS Data Link thread 0 using TCP port 10305. MIDAS Data Link (5821): Entering server loop MIDAS Data Link (5821): thread 0 listening on port 10305 4) Check whether the EPICS access repeater process is running tuda2> ps -ef | grep caRepeater tuda 2182 1 0 12:35:07 pts/2 0:00 caRepeater If the EPICS access repeater is not running, you can start it by requesting any EPICS variable, e.g. tuda2> caget CCS2ISAC:BL2ACURRENT CCS2ISAC:BL2ACURRENT 0 5) Open (another) command window. Enter the command MIDAS-session From the pop-up window select -> MIDAS Data Acquisition If you wish to run a MIDAS session remotely (tuda3 ISAC-II Counting Room 1) establish a Secure Shell (ssh) connection from tuda3 to tuda2 tuda3> ssh tuda2 -l tuda and enter the command MIDAS-session in this terminal session. It is *strongly* recommended that you do NOT run the MIDAS DAQ locally *and* remotely. 6) From the MIDAS Main Menu select Experiment Control ... and wait until start sequence is complete 7) From MIDAS Data Acquisition Experiment Control select SETUP. From Confirmation Request for Data Acquisition Setup pop-up window select Setup Everything ... and wait until the sequence is complete with the message MIDAS DA is SETUP and ready to GO at <date/time> 8) From the MIDAS Main Menu select Experiment Control select -> Advanced. Select Configuration/Test/Debug Frame. From confirmation pop-up select -> Yes - Please Continue Check the TDC mode is Common Stop, TDC reference is 0, and readout mode is 1. Check Data Destination:Tape Server is tuda2daq and select 'Setup Connection' Select Update. Dismiss the Configuration/Test/Debug Frame. 9) From MIDAS Data Acquisition Experiment Control select Tape Control. From the Tape Drive Control window select Allocated? button adjacent to /dev/file/0 - No should toggle to Yes. Select corresponding Load Tape -> Mount (Append Data to old tape) Volume name (S1195) should appear, select Continue. If you do not wish to write data to disk (/dev/file/0) select No Storage. Dismiss the Tape Drive Control Window. From MIDAS Data Acquisition Experiment Control select Redisplay. Tapes in use should change to: /dev/file/0 (if you are writing to disk) Storage is not enabled (if you have selected No Storage) Check Histogramming Enabled and TS Transfer Enabled are selected. The TS Transfer Enabled button should be green indicating a good connection to the Tape Server. 9) From the MIDAS Main Menu select Experiment Control select Go If you have selected No Storage you will be reminded of this and asked whether you wish to continue, or abort data acquisition start. Starting data run ----------------- Assumes DAQ is already stopped. 1) Clear VME CPU histograms (if required) From Spectrum Directory Browser frame select -> Resource -> hist Select -> Select All Select -> Actions -> Zero & Deselect The footer of window should show zeroing of spectra in progress. 2) Clear online sort spectra (if required) From Spectrum Directory Browser frame select -> Resource -> SortSas Select -> Select All Select -> Actions -> Zero & Deselect The footer of window should show zeroing of spectra in progress. 3) Start DAQ From MIDAS Data Acquisition Experiment Control select -> GO If the DAQ has started OK you should see the 'Good Events' scaler increment and 'Good Events /s' should be non-zero. 4) Complete Elog entry The Session Log window will show the start time & date 5) Check run data file Open a command window and enter command(s) ls -l /net/tuda2/data2/data/S1195; sleep 60; ls -l /net/tuda2/data2/data/S1195 and check current run data file is increasing in size. Stopping data run ----------------- Assumes DAQ is going. 1) Stop DAQ From MIDAS Data Acquisition Experiment Control window select -> STOP 2) Save VME CPU histograms From Spectrum Directory Browser select -> Actions -> Save The Spectrum Copy & Online Histogram Save window should appear. Select -> Source Resource -> hist Select -> Select All Check destination Directory (e.g. /home/tuda/S1195/spectra) Enter (sub-)Directory (e.g. run100) Select -> Execute 3) Save online sort spectra From Spectrum Directory Browser select -> Actions -> Save The Spectrum Copy & Online Histogram Save window should appear. Select -> Source Resource -> SortSas Select -> Select All Check destination Directory (e.g. /home/tuda/S1195/spectra) Enter (sub-)Directory (e.g. run100) Select -> Execute 4) Complete Elog entry The Session Log window will show the stop time & date and # blocks written to disk T.Davinson - May 2009 Revised - April 2011