3rd Arm DAQ for g2p

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Revision as of 16:03, 28 February 2012 by Cg2ja (Talk | contribs) (Reboot TS ROC)

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Normal DAQ Operations

Account Info

  • 3rd Arm DAQ is running separately with the HRS DAQs.
    • 3rd Arm DAQ runs on the adaql3 computer on the adev account.
    • 3rd Arm DAQ is using CODA 2.5.

Start and Stop Runs

  • To start and stop runs, push the buttons "Start" and "End".
    • No need to use "Prestart", "Start" will do "Prestart" and "Go" in sequence.
    • If the run control is not running, follow the Cold Restart section below.

CODA Configurations

  • We are using "thirdarm_buf" configuration for 3rd arm.
    • The configurations should be loaded by default.
    • To change configurations, click on the "Reset" button on the left, then press "Configure" button, choose the configuration from the dialog box, then push the "Download" button.

Editing Prescale Factors

  • Login with adev account, type "prescaleTA" to start the GUI. Make changes and click "save" button.
    • Notice T8 is 103.7 kHz fast clock for 3rd arm, so you need to set PS8 to 103 to get a ~1kHz pulser trigger.

Online Scaler Monitor

Start xscaler for 3rd Arm

  • Open a terminal, type "ssh adaq@adaql4";
  • Type "cd ~/g2p/thirdarm/scaler";
  • Type "./xscaler thirdarm" to start GUI.

Definition of Some Entries

  • 1~8  : Insert non-formatted text here: E1_R(L)-E4_R(L), hits on E plane PMTs;
  • 9  : currently empty;
  • 10  : fclock, 103.7 kHz fast clock;
  • 11  : L1A
  • 12  : trigger
  • 13~16: dE1_R(L)&dE2_R(L), hits on dE plane PMTs;
  • 17~18: bcm_u(d)1, upstream(or downstream) BCM.


Reset CODA

  • Click the "Reset" button on the run control interface. You will need to do "Configure" and "Download" again.
  • If reset CODA can not solve the problem, try a cold restart, follow the instruction below.

Cold Restart CODA

  • To make a cold restart of CODA for 3rd arm DAQ, first make sure you are using adev account on adaql3 computer. If not, open a terminal and type "ssh adev@adaql3";
  • On adev@adaql3, type "kcoda";
  • Type "startcoda", the runcontrol GUI will pop-up;
    • Press the "Connect" button;
    • When you see the "Configure" button, press it, then choose one configuration ("thirdarm_buf" configuration for usual). Wait for a while.
    • Click on the "Download" button to start download the libraries;
  • You have restarted CODA. To start a run, press "Start" button.

Reboot TS ROC

  • Third arm only have one ROC, which is ROC12.
  • If the ROC hung up, you will need to reboot it:
    • Open a terminal, type "telnet bbps1 2005";
    • Type "reboot" in the ROC's xterm window;
    • Wait until the ROC finished executing the the boot script, you should see all of the commands in the xterm window;
    • If you lost the connection, telnet into the ROC again to verify it is alive.
  • If this software reboot does not work, you may need to do a cold restart for it:
    • (will update later)
  • You can find the boot parameters here: Boot Parameters for g2p (The last section TS1(ROC12))

Set Run Parameters

High Voltage Setting

Threshold Setting

  • The discriminator thresholds for 3rd arm can be controlled remotely, normally you do not need to change this:
    • Open a terminal, ssh to one of the adaql computers;
    • Type "threshold_TA -g dE" to check the threshold for dE(or E) plane;
    • Type "threshold_TA -s dE 350mV" to set the threshold for dE(or E) plane to 350 mV;
    • When you start a run, check in the auto halog to see if the threshold values are recorded properly.