GlueX Target Design Mtg, March 8, 2013
From GlueXWiki
Present: Dave Meekins, Jim Fochtman, Mark Ito, Chris Keith, Tim Whitlatch, James Brock, Josh Pierce, Josh Ballard, Dave Butler
Agenda
- P&I Diagram Media:Latest Target P&I.pdf
- Dave's SOW Media:Target SOW.pdf
- Dave's Calcs Media:Target calcs1.pdf Media:Target calcs2.pdf
- Review notes from last week
- Review Dave's SOW
New action Items
Notes from last week
- Discussed Gas system status, vacuum system, cell and scattering chamber and tasks to be done. The following are the results of the discussion;
- Procurement of gas system components started. Still need piping and relief valves. $40-50K
- Maybe best to locate purge bottle on pad outside hall?
- Target group will order the 500 gallon H2 tank for outside and take care of piping and instrumentation on the tank - off-shelf item, order in May/June
- Jim Fochtman working on the pad requirements for the tank and purge system as well as path of piping to hall and submit to facilities for installation.
- Probably locate pipes to tank through cryo penetrations.
- Plan to use 20' flex line to allow target to be moved in and out of the detector
- lakeshore controller from target group was tested for compatibility with Hall D controls. All is good. Chris ordered controller and Josh ordered PLC controls. Still need to order cables.
- Looks like a heat exchanger using LCW/Chilled water most economical for refrig. compressor
- Jim to get with Dave on scattering chamber design (<15Psig).
- Tim ordered vacuum system pump cube (Pfeifer turbo cube). Still need to order gauging.
- Chris sent out list of all items needed for monitoring/controlling from PLC system
- Hall D people to discuss what needs to be shut off in hall when target vacuum goes south
- Jim to develop H2 vent details
- One target cell is made, will need to make two more
- Dave to handle pressure system design as the DA
- Still need to develop heat shield and work out cold head weight limits
- Written procedure needed
- Heium and Neon were condensed in a production target.
- Helium took approx. 10 hrs
- Neon took approx. 3 hrs
- Discussion on using a heater on the cell return to help convection and one on the supply line to quicken boil off (warm up). Target group will try another run with heaters.
- If heaters used, need controls
- Plan on internal review this June
- Discussion on using aluminum instead of torlon for base of cell. Jim to talk to Steve Christo.
- Need to finalize infrastructure schedule and drawings
- Hall D personnel will install piping in hall and to tank.
- Target group to supply break out box for controls interface
- Dave M. to get P&I to Dave Butler for controls loop
- Discussion to use relays to shut down compressor, vacuum valves and heaters.
- All need to read Dave M. SOW and comment back to him.