TODOs

  • bgvdata package
  • Info from Didier for gas pressure
  • WinCC - SiPMs current & temperatures
  • Resetting of tunnels after restart for bgvgw machine (Colin)
  • Try as hard to finish CryoBLMs analysis before vacations

[28 / 06 / 2016] Trigger tests

  • On previous LHC intervention Quentin added longer cables (+6ns -> 16ns) (previous week notes)
  • Testing the rates of the trigger with different masks, phases and gas pressure.
  • Results can be seen on presentation from BGV meeting next day.

[29 / 06 / 2016] BGV Meeting

  • Discussion for new intervention to see trigger signals with oscilloscope with respect to the bunch clock
    • Picoscope 6404b taken, connectors etc, software installed on my laptop
    • Have to get all passwords in order to install it to a machine in the tunnel -> Colin

[30 / 06 / 2016] LHC intervention & Picoscope

  • Picoscope installed
  • From patch panel 8ns BNCs to a T-connector on the scope. From there with 16ns SMAs to the trigger FPGA.
  • Bunch clock connected to external trigger input with 8ns Lemo
  • Need to check installation of software - installation done.
    • All rpms were downloaded (link) and installed
      • libgdiplus was also needed besides everything from picotech website
    • Installation under /opt/ , also binary in /usr/bin/
  • Effort to remote reset the USB as the scope was not discovered by the app (happened to my laptop too)
    • C script using sys/ioctl.h but no luck.
    • Finally simply restarted bgvgw
  • When bgvgw is restared the ssh tunnels for the cvmfs access must be reset
    • Talk to Colin about how this is done - check online.
  • Picoscope ready.

[31 / 06 / 2016] Picoscope

  • Playing with picoscope, reading documentation for application etc
    • Unfortunately for Linux beta application some features (math, alarms) are not yet implemented.
    • Also interesting youtube channel
  • Seems like it will be better to save data and do the analysis we want from python.
    • Script - analysis_picodata.py
      • Histograms of minimum value
      • Histograms of time delta between the triggered channel and the
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Topic revision: r2 - 2016-07-01 - AndreasAlexopoulos
 
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