[Hps-controls] HPS controls meeting, Wednesday March 19, 2014

[Hovanes Egiyan]

Hi,

I pasted the minutes of the last HPS controls meeting to this message
and posted them on the wiki:

https://confluence.slac.stanford.edu/display/hpsg/2014.03.19+Biweekly

Better late than never.
Hovanes.


    Minutes


          SVT Voltage control

  * Hovanes and Sergey got an MPOD crate from CLAS12 SVT for temporary
    use with 3 low voltage and 3 bias boards.
  * Hovanes started an IOC on clonioc2 server in the counting house. The
    IOC at this time has the bias voltages and FE LV channels.
  * The IOC is using the Hall D scheme (Nerses) for configuring the
    EPICS DB based on the MPOD chassis content and on a SQLite DB for
    detector hierarchy.
  * The mapping of the detector channels into the MPOD channels is
    arbitrary at this point. Pelle will create an Excel file with the
    correct mapping and send to Hovanes.
  * Bryan gave a presentation on his progress on the SVT voltage control
    GUIs.
      o Bryan crated an overview GUI for SVT voltages and the detail
        view for the voltage parameters for the bias voltages and FEC
        voltages.
      o Pelle asked Bryan to setup a button for group operations (at
        this point just ALL CHANNELS grouping, but in the future TOP and
        BOTTOM group operation might be needed).
  * Pelle reported that Ryan and himself will meet with an EPICS expert
    to discuss and start working on the DAQ CA server for voltages and
    the SVT temperatures.
  * Ani Simonyan started working on the alarm configuration for the SVT
    voltages.
  * Still unclear when would the right time be for Bryan to travel to
    SLAC to setup SVT voltage controls in EPICS.


          Motor setup

  * Hovanes reported that it was decided to use a Newport XPS-Q8 motion
    controller for the HPS SVT motor control.
  * Most applications will not be affected much by this change with the
    exception of scans. Hall D is using these controller and the scan
    procedure will be developed together with Hall D folks.
  * Armen from JLab Fast Electronics group is working on the three SVT
    motor cables. He is ordering the cables and connectors.
  * Ani Simonyan (Yerevan) will start working on the scan software in
    April.
  * For now the other six motors will be using the Hall B standard
    scheme with OMS drivers. If we decide to move some of them to XPS,
    then we will use short adapter cables to connect them to XPS.


          Chiller controls

  * Stepan ordered a chiller that will first be used for ECAL test, and
    later will be used for the SVT FEC cooling.
  * Since this chiller will also be in vacuum, it needs to be
    interlocked similar to the main SVT chiller (Pelle).
  * A bypass circuit with solenoid valves will need to be installed on
    the chiller for the interlock to be able to shut off the coolant flow.
  * A mass flow meter will need to be installed in the piping to be able
    to shutoff the power supplies when there is not sufficient flow of
    coolant.


    Action items

  * Hovanes will implement the flange LV and hybrid LV channels in EPICS
    IOC and let Bryan know.
  * Ani will crate a preliminary version of the alarm configuration for
    SVT voltages.
  * Cables for the motors will be build at JLab and Hovanes will sent at
    least one of them to Takashi.
  * Pelle will check with SVT engineers about the bypass flow and the
    flow meter for the FEC chiller.
  * Hovanes, Stepan and F.-X. will stay in touch with JLab PSS group
    regarding the accelerator's FSD input for SVT interlocks and come up
    with a plan by the end of February. (from the previous meetings)
  * Pelle will find out when the SVT full test at SLAC will take place
    and let Bryan know by April , so that Bryan can make plans. (from
    previous meetings)
  * F-X. will send a drawing of where the beamline motors need to be for
    HPS 2015 so that Denny can start procuring and making motor cables
    and laying them in the Hall. (from previous meetings)


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