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Jason St. John, 07/17/2016 09:29 PM

1 104 Jennifer Raaf
!https:/redmine/attachments/download/17373/Lariat_Logo_256.jpg!  
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LArIAT shift: *+1 9293 LARIAT* (= +1 929 352 7428)
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ROC West x5413
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MCenter Control Room (MC-CR) x3726 or x8871
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Internationally: prefix *+1 630 840* to the above
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h1. Shifter Stuff
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* [[Before your first shift at LArIAT]]
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* If remote or starting local shift from scratch: "How to Set up your Shift Station":https://redmine.fnal.gov/redmine/projects/lariat-online/wiki/How_to_set_up_your_shift_station
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* +[[LArIAT Run 2 Shifter Instructions]]+ (April 2016)
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** [[Run Plan]]
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** "LArIAT Expert Call List":http://lariat.fnal.gov/internal/internal.html  (User is "lariat", password same as docdb)
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{{toc}}
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h2. Link summary ( [[quick start]] )
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* "Live event viewer":http://lariat-wbm.fnal.gov/lariat/evd.html snapshots
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* "Accelerator Schedule":http://www-ad.fnal.gov/ops/schedule.html  (power outages, etc)
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* "LArIAT eLog":http://dbweb0.fnal.gov/ECL/lariat/E/index  For making/ending access, starting/ending shifts.
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* [[LArIAT DAQ Instructions]] (February 2016)
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* "LArIAT Run Status Webpage":http://lariat-wbm.fnal.gov/lariat/run-alert.html
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* "LArIAT Run Summary Webpage":http://lariat-wbm.fnal.gov/wbm/servlet/LariatRunSummary
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* "LArIAT Online DQM":http://lariat-dqm.fnal.gov (works with VPN or VNC or on-site only, for now)
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* How to use the [[event viewers]]
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* "Synoptic":https://cdcvs.fnal.gov/redmine/projects/lariat-online/wiki/Using_Synoptic_for_monitoring
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* "Beam monitoring (ACNET)":https://redmine.fnal.gov/redmine/projects/lariat-online/wiki/Using_ACNET_for_monitoring?parent=Wiki
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* "Beams Division E-Log":https://www-bd.fnal.gov/Elog/?logNames=Booster%2C+External+Beamlines%2C+Linac%2C+Main+Injector%2C+Operations
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* "MC7 WebCam":http://131.225.176.26/
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h3. Important knowledge
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* "List of MC7 ACNET devices":https://redmine.fnal.gov/redmine/projects/lariat-online/wiki/MC7_in_ACNET
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* [[MC-7 Enclosure Layout]]
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* "In case the beam TVs are off":http://www-bd.fnal.gov/notifyservlet/www?project=&refresh=on&infolinks=top
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* [[The LArIAT supercycle]] _How DAQ operations relate to the main injector supercycle_ 
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* "Hardware-Connections-and-Configurations":https://redmine.fnal.gov/redmine/projects/lariat-online/wiki/Wiki#Hardware-Connections-and-Configurations
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* "Electronic Hardware Documentation":https://redmine.fnal.gov/redmine/projects/lariat-online/wiki/Wiki#Electronic-Hardware-Documentation
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h3. Obsolete links
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* [[LArIAT Run 1 Shifter Instructions]] (June 2015)
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* -LArIAT Engineering Run (Aug 2014) [[How to Run the Lariat Data Acquisition]]- (OBSOLETE)
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* -"Shifter Instructions":https://docs.google.com/document/d/1mlN_UIOCqwhe0cFiU7mRc3-lxDZhY-4TmIy23rOzILI/pub August 2014- (Some obsolete information)
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* -How to make [[Lariat DAQ Plots]]- (OBSOLETE)
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h1. Troubleshooting 
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Any time day or night, please call experts if you are in need of help and the answer is not provided below.
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h2. *VNC Shared Desktop*
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h3. Mouse clicks not working. Keyboard remapped. Arrow keys type numbers.
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Solution: Kill synoptic, restart it.
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h3. *'VNC server closed connection'* might mean that the vnc server on lariat-cr-02 is not running. 
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Log on to lariat-cr-02 and check if the X11 vnc sever is running:
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<pre>
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$ ps aux | grep vnc 
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lariat 31537 0.0 0.0 103308 860 pts/5 S+ 00:12 0:00 grep vnc 
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</pre>
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Re-launched it:
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[lariat@lariat-cr-02 ~]$ x11vnc -create -localhost -xinerama -display :0 -shared -many -forever -bg -rfbauth ~/.x11vnc/passwd
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Checked that it is running now:
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[lariat@lariat-cr-02 ~]$ ps aux | grep vnc
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lariat 31670 8.4 1.6 194032 61944 ? Ss 00:14 0:10 x11vnc -create -localhost -xinerama -display :0 -shared -many -forever -bg -rfbauth /home/lariat/.x11vnc/passwd
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lariat 31753 0.0 0.0 103308 860 pts/5 S+ 00:16 0:00 grep vnc
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...and shifter is able to connect (the most important part!)
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h2. *Trigger and DAQ system*
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When the DAQ crashes, please post the relevant information to [[DAQerrors]] for experts to study.
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h3. Common failures:
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* Communication failure with the front ends. Trying clearing it with 
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<pre>lariatReset</pre>
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Wait a few minutes and then try the @go 480@ command again.
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* Unable to start a new run: <pre>lost connection
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Permission denied (gssapi-keyex,gssapi-with-mic)</pre>
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** Log out of the DAQ machine, and use the command *@kticket@* to pick up a fresh kerberos ticket with the special principal that we use for the DAQ: @lariat/lariat@lariat-daq00.fnal.gov@FNAL.GOV@. Check for this success with @klist@. Then log back in to the DAQ machine and start a new run.
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* DAQ fails with @ERROR: ReadRegisgter ACQUISITION_STATUS CAEN_DGTZ_CommError BoardId 0@  wait 2 minutes, then try to start again.
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** Try issuing the command @lariatReset 0 1@ waiting more then 5 seconds, and trying again.
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This command is appropriate when one sees any type of "CAEN_DGTZ" error.  This command will NOT help the persistent ports error.
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* DAQ fails with @Found persistent communication port still open@
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** Wait 8 minutes for the ports to clear, then try again.
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* DAQ fails with "An exception occurred when trying to send a message to ..." 
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** Check that the terminal you are running the DAQ from is indeed lariat-daq00 (or a screen within it).  Output from @klist@ should show the default principal as "lariat/lariat/lariat-cr-02.fnal.gov@FNAL.GOV" or similar if running from a screen off lariat-daq00 from the ROC-West station.
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** Run number failed increment or has reset to a low number such as 1: Stop the run and then on the DAQ terminal edit @/opt/lariat-online/config/runNumber.dat@ to correct the run number. Start new run after.
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h3. Other failures: 
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* If the DAQ is having trouble talking to the crates, try issuing the command @lariatReset 0 1@ waiting more then 5 seconds, and trying again.
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This command is appropriate when one sees any type of "CAEN_DGTZ" error.  This command will NOT help the persistent ports error.
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* *No triggers at all* If the trigger crate has been power cycled and the V1495 is not emitting triggers: [[Reset1495]]
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* *Run Status page not updating* 
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** Try refreshing the page. 
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** If the ACNET node has gone down (as in a power loss) may need to re-start the tomcat servlet: @ssh tomcat@lariat-wbm.fnal.gov@, then @kitty@.  (Yep, "kitty.")
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h2. *Wire Chambers*
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Nominal Voltages:
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|_. WC1 | -2425 |
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|_. WC2 | -2400 |
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|_. WC3 | -2425 |
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|_. WC4 | -2450 |
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* If the wire chambers HV trips: "instructions to control wire chamber voltages":https://cdcvs.fnal.gov/redmine/projects/lariat-online/wiki/Using_Synoptic_for_monitoring#4-Synoptic-power-supplies-controls
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* If the wire chambers are acting strangely: "remote power cycling instructions":https://redmine.fnal.gov/redmine/projects/lariat-online/wiki/Communicating_with_the_wire_chambers including mini-DAQ and telnet interface.
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* If the wire chamber system is skipping spill numbers, it may be a high trigger rate (> 30 k per spill).  The wire chamber controller may still be reading out the hits from the last spill.
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h2. *High voltage for the wire chambers, TPC wireplane bias, cryo PMTs*
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%{color:red}ICathode HV trips off due to LAr level interlock.%
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[[Drift HV]] TPC Cathode Voltage
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"*General Instructions for controls via Synoptic*":https://cdcvs.fnal.gov/redmine/projects/lariat-online/wiki/Using_Synoptic_for_monitoring#section-10
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Also valid for some of the muon range stack paddles (1-8), the halo veto and 1 aerogel PMT.
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*ONLY IF SYNOPTIC DOESN'T WORK* "Instructions for controls via ACNET":https://cdcvs.fnal.gov/redmine/projects/lariat-online/wiki/Using_ACNET_to_power_up_the_power_supplies
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* The readback voltage doesn't make any sense, is of the wrong polarity and/or is way above the nominal value, but just for a fraction of time.
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This is most likely just a glitch in the readout, please ignore if it happens once or twice. If it happens too frequently, set voltage to 0, turn off the power supply and report it. 
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* The readback voltage doesn't make any sense, is of the wrong polarity and is way above the nominal value, and the value is stable~ish (you might see small fluctuations over time)
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This is a typical symptom of a bad power supply. Try to set it back to 0, turn it off and disconnect the SHV cable. If the readout values remain the same, it confirms there is a hardware problem. Please contact Brian Fellenz for repairs if we don't have a spare for that unit.
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FYI, the power supplies have a given voltage rating and cannot physically deliver voltages beyond that range. Also, their polarities cannot be swapped so if you see the wrong sign on the readout ie a positive voltage on a negative power supply or vice versa, then you can be sure the unit is broken or you have a problem somewhere else in the system.
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- Bias voltage rating: - 500 V for the shield and induction planes, + 500 V for the collection plane.
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- ELT and Hamamatsu PMTs: +2000 V
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- Wire chambers: - 5000 V
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- All of the other units: -2000 V
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* Something went wrong during a ramp, I need to turn off the supply!
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There is an interlock that prevents you from using the normal fast controls on the power supply when a ramp is on-going. First, *stop the ramp by clicking on the STOP button*. This will stop the ramp and clear the interlock. If you need to go back to 0 quickly, use the fast controls to set the voltage to 0 and *don't forget to turn off the supply!*
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*Even if the controls appear not to respond, set the voltage to 0 and turn the supply off*. Contact Charlie Briegel first and describe the problem in detail. If you can and if it's safe, disconnect the SHV cable from the power supply. If the readback values remain the same, then the power supply is broken.
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* *ACNET controls expert: Charles (Charlie) Briegel, x4510 briegel@fnal.gov*  
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* *VME power supplies repairs / replacements: Brian Fellenz, x2512 fellenz@fnal.gov*
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h2. *Event Viewer*
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* If the event viewer stops cycling through the events and the terminal from which it is running shows a list of lines saying something like _"event XX in file, but on event 0"_ with _XX_ any number,
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** _*ctrl+z*_ 
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** _*ps -def*_ to look at the processes list. Look for the job ID of the process _"python /lariat/app/users/EventViewer/..."_ 
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** _*kill -9 JobID*_ to kill the event viewer
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** open a new event viewer <pre>ssh lariat@lariatgpvm01.fnal.gov 
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cd /lariat/app/users/EventViewer/; source SETUP_ONLINE_EVENTVIEWER.sh</pre>
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* If the problem persists and/or become more frequent, exit the session you are in and try to connect from a different gpvm machine
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h2. Power Cycle the ASICs (TPC Wire Noise)
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* Anecdotal evidence has shown that analog noise on the TPC wire readout channels can be 
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alleviated by power cycling the TPC electronics: ASICs and Warm Receiver/Drivers
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* You can remotely power cycle the TPC electronics.  Log onto lariat-gateway00.fnal.gov with X-forwarding enabled, type "firefox", and go to http://lariat-pdu02.fnal.gov.  Usename "ftbf" (password posted on whiteboard in MC7).  Choose the *CYCLE* option, which will automatically give a 60 
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second powerless interlude.
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* Further important informations can be found on the white board in MC-CR.
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* This mechanism is controlled by a smart power distribution unit (PDU) located under the 
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TPC electronics power supply near the cryostat in the enclosure.   Due to electrical safety 
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rules you must *NOT* use any of the other outlets on this PDU.  Do *NOT* remove the protective 
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outlet covers at any time.
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!https://redmine.fnal.gov/redmine/attachments/download/25467/lariat-pdu02-cycle.png!
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h2. Recover from a LAr level interlock
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Assuming the LAr Level dropped low enough to trip off the TPC Cathode power supply, and maybe you even powered down the PMTs.
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# Be sure HV is set to zero for these: Cathode Drift, Wire Bias, cryo-PMTs
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How to control the [[Drift HV]]
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# Power down the ASICs. (They should be off when TPC voltages change.)
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# Bring up the Cathode
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# Bring up the Wire Bias
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# Bring up the ASICs
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# Bring up the PMTs
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h2. Synoptic troubleshooting
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%{color:red}"Synoptic Troubleshooting":https://cdcvs.fnal.gov/redmine/projects/lariat-online/wiki/Using_Synoptic_for_monitoring#Troubleshooting%
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h2. DQM troubleshooting
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If the DQM is %{color:red}flashing red%...
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* Check to see if the DAQ is running. If it isn't running, you should start a new run!
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* Check the "LArIAT Run Status page":http://lariat-wbm.fnal.gov/lariat/run-alert.html. If the number under *Complete Files Waiting* is greater than 10, please call a data handling expert!
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* Check the disk space on the @/lariat/data@ mount with the command @df -h /lariat/data@ on a @lariatgpvm@ or @lariat-daq@ machine. If the disk space is 100% full, please call a DQM expert!
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h2. PB S60 PPD Params
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If F:MC7AN , F:MC7ANB and F:MC7ANP show the values 1  -6 (in red), this is probably a communication problem, where we are not receiving data from them.
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Usually it comes back in a few minutes. 
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If not, call the MCR and ask them if they can see those values.
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h1. Hardware Connections and Configurations
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* [[TPC Channel Mapping]]
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* [[Non-TPC Detectors]] *Naming and numbering in MC7*
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* "Cable Patch Panel Spreadsheet":http://goo.gl/JXiH8Y
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* [[Connections on the Control Room Patch Panel]]
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* [[Logical inputs to the CAEN V1740]]
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* [[Connections into the WUT TDC]]
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* [[Connections into the V1751 Digitizer]]
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* [[Trigger inputs|Connections in/out of the V1495 Trigger]]
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* [[Logic pulse widths and discriminator thresholds]]
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* [[WUT configuration]]
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* [[Timing of ACnet TCLK Events]]
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* The [[Teensy]] LAr ASIC controller's configuration
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* [[Punch Through counters voltages and rates ]]
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h1. Electronic Hardware Documentation
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* Link to LArIAT eLog http://dbweb0.fnal.gov/ECL/lariat
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* [[LariatOnlineGit]] Accessing the LArIAT Online GIT repository
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* [[Building LArIATOnline with CMake]]
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* [[LArIAT TPC Readout Parameters]]
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* [[LArASIC Preamp Documentation from BNL]]
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* [[LArIAT DAQ Commercial Products]] Technical Documentation and Firmware Files
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* [[LArIAT CAEN Products]] Technical Documentation and Firmware Files
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* Test Beam Wire Chamber Sten Hensen's [[TDC Readout Documentation]]
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* WUT Wave Union TDC: [[Jinyuan's TDC Documentation]]
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* [[v1495 notes]] Notes and working area for the V1495 and V2718
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* "V1495 docs on DocDB":http://lartpc-docdb.fnal.gov:8080/cgi-bin/ShowDocument?docid=1698, built from source:fpga/doc/
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* [[A3818 PCI optical controller]] links
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* [[DAQ Configuration]] settings, parameters, starting a run
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* [[Raw Data Format and Readout Source code]]
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* [[All things lariat-artdaq]] (UPDATED 11/5/14)
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* [[Interpreting Wire Chamber TDC Data]]
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* [[LArIAT Test Stand]] Photographs
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h1. Diagnostic and Control Software
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_Test programs in the_ lariat-online/daq/src _directory_
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* [[DumpDigitizerData]]
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* [[SummarizeDAQOutput]]
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* [[Reset1495]]
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* [[ScalarReadout]]
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* [[Data_quality_monitoring_module]]
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* CAEN's [[WaveDump]] utility
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h1. Examining the WC mini DAQ ASCII data
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The Processor makes TTrees from the ASCII files saved by @mc7-daq.py@
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[[WC MiniDAQ Data Processor]]
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h1. Data Files from the year 2013
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Data files for various beam conditions can be found in the [[DataFiles]] page.
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h1. Meetings
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* [[Connecting to LArIAT ReadyTalk]]
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h1. Miscellaneous
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* The control room shifter computer (MCenter) can be logged into as ftbf_user@ftbflx18.fnal.gov after passing through lariat-gateway.fnal.gov
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* [[Proxy using SSH tunnel]]