• Created by Unknown User (hovanes), last modified on Mar 16, 2014

Time and Location

1pm Eastern time

Room B101 in B-wing at JLab

Agenda

 

Minutes

Present at JLab: F.-X., Krister, Stepan, Hovanes

Present at SLAC: Sho, Pelle, Takashi

Present at Glasgow: Ken, Bryan

 

Motor Setup for SLAC
  • Hovanes has the desktop computer and the VME crate setup, and the driver box connected to the VME.
  • Operating without encoder feedback for now.
  • There seems to be a problem with either the motor driver configuration or the driver wiring.
  • Krister is tied up with CLAS12 magnets, Denny Insley will probably help Hovanes with the motor driver box and cables. 
  • Denny will need to make a short (~2m) encoder cable (5-ping to trim-trio) and to figure out the setting for the driver box.
  • Denny can also start ordering and making the cables for the HPS motors, CLAS motor cables were cut during decommissioning.
    • 2 boxes downstream of CLAS, 1 motor box upstream of CLAS
    • F.-X. needs to send the drawing with the locations of the motors required for the HPS beamline to Krister and Denny.
    • For SVT motors, in addition to the cable for the motor leads we will need to find a cable for encoder (8-strands twisted cable shielded, RS-422)
  • Stepan told us that Chris Cuevas can help with manpower if any electronics related or cable-making work needs to be done.
Voltage GUI requirements
  • Bryan is ready to work on the SVT and ECAL voltage GUIs, can work remotely at Glasgow.
  • Hovanes presented what he thinks needs to be done in general or the ECAL and SVT voltage GUIs.
  • Bryan will be visiting JLab for two weeks in the beginning of March (CLAS collaboration meeting)
  • Bryan will also be able to travel to JLab at the end of April to try the software at JLab and then travel to SLAC to setup the voltage controls SVT test . 
    • Pelle will try to find out when the SVT test occurs, and let Bryan know, preferable by beginning of April. 
SVT Interlocks
  • Hovanes and Krister met with Dave Butler from Hall D and described him the requirements for SVT interlocks
  • Dave gave us his recommendations for the PLC modules as well as quotes from the local (for JLab) PLC dealer.
  • If no objections are received by Friday morning, Hovanes will forward these quotes to Marco for procurement.
  • Stepan asked if the flow meter for the SVT interlocks will be speced and procured by JLab or SLAC groups. Hovanes' understanding is that Marco will take care of specifying the flow meter and either JLab or SLAC can buy it. Pelle will double check this to determine who does this.
  • Hovanes contacted JLab PSS people regarding having an FSD input to the SVT interlocks. PSS group will help us to set it up.

 

SVT chller(s)
  • Hovanes was curious if there was any decision on using a second chiller for SVT. In particular, if there was a decision, what would be the requirements for it in terms of controls.
  • According to Pelle, SVT group is strongly leaning towards a second chiller for FE boards, and it would be set to room temperature. The FE board chiller would also need to be interlocked (exactly the same way as the main chiller) and will need to be remotely controlled and monitored in EPICS. 
  • Pelle will further discuss the needs of FE board chiller with Marco and let us know at the next meeting.

 

Action items

  • Hovanes will meet with Denny and explain what needs to be done for the motor setup (encoder cable, driver settings).
  • Denny will start working on the cable and the motor box.
  • 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.
  • 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.
  • Hovanes will send the quotes with the list of PLC modules with quotes to Marco sometime this Friday if he does not receive objections.
  • 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.
  • Pelle will talk to Marco regarding the following items and let us know the results on the next meeting:
    • Flow meter - who specs it, and who buys it.  
    • Requirements for controls and monitoring for the second FE-board chiller.  

 

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