Attendees: Eliazar, Armin, Alex,  Rebecca, Eric, Elena, Marc


  • Announcements
    • Descoping Detectors/Lasers from HE project BUT!! going to move scope to other future funded project (MIE 2024) and there's plenty $ there to fund full detector + CO2 cooling
    • Jungfrau 16M between now and HE.
    • Director's Review slides - done.
  •  Documents:
  • Laser coordination
    • stayclear cubes --add to models
    • monthly combo meeting - engineering or requirements/science? next on Jan 24th
      • ICDs
      • PRD
      • Other...
    • Model -
    • transport line is now under raised floor — please verify height is correct.
      • can we move downstream 1.5"?
      • can we shorten first drift segment by 9" to move flange away from cross member?
      • interference with stand → igor is designing new cross braces
      • raised laser table → no showstopper issues ?
        • maybe extra bracing down the line -
      • stay-clears for in-between laser table and diagnostic stand - interface is tricky
        • LSS safety system shutters are there
        • controls need access
    • Ongoing requirements negotiations/meetings
      • liquid phase chemistry stuff wasn't really captured → meeting on Monday with Tim VD/Roberto?
      • review of historical laser parameter requests
      • Tim was invited to last mtg. and explained his requirements
      • NO NEED FOR CHANGES. Written Agreement pending. (CC DF)
    • we are also ready to design laser out-coupling when laser team has details/requirements available
      • Does the detector situation matter? beam tube size? this geometry is important...
      • ideal hole diameter?
      • what is needed?
      • what is common ?
      • document on confluence and eventually in PRD
    • Resend Z location info to M. Greenberg - help him figure out divergence etc. which will let us know what hole diameter we need...
    • thermal issues (see below)
    • ICD–up on working site? (add link)
  • Facilities coordination - need to start discussing
    • Temp enclosure info? --need to find out status??? ask matt ? ask danny?
      • assume similar to xrt? 80/20 frame with thin walls?
    • When can we set up temp monitoring?- Alex found data!
    • Add more sensors!!
      1. near CXI KB location (1 min sampling rate)
      2. near MFX KB location (1 min sampling rate)
      3. near Laser table (1 min sampling rate)
    • Detector Cooling
    • Room Temperature control - can we control temperature locally at/near MODS table? easier? - first we need requirements
      • +/- .1 deg stability target - what does "facilities" think of this?
      • where exactly is stability needed?
      • air flow rate?
      • think about cable runs and duct work - maybe we can add in next revision run
      • do we have data?  we have data at the exit window...moar data needed? can we turn temp sensor on? with data logger?
      • open air flow meter? should we do this?
      • environment around mirror systems need special consideration?
      • Joe also has some data (tyler johnson has designed some environmental sensor boards)
      • stability more important than accuracy of temp - can we control this operationally (letting things warm up and settle?)
      • timing impact
      • pointing impact
      • local control may not be possible → room data sheet?
        • get some data about current air handling system for a reference point
  • Exit window
    • 100um? 150?
    • safety device?
    • fast shutters?
  • JJ zooms/visit (27th) - questions about sticky slits
    • Meeting later this week with Christian? Thurs morning?
      • HE Overview
      • sticky slits - rework procedure from JJ is coming - unit needs to come out though
        • spares? TMO?
      • transfocator backlash?
      • adjustable apertures/power slits upgrade
      • attenuators
      • supply chain issues?
      • bad encoder on slit blade (single unit) - more involved rework - can JJ send procedure
        • find replacement encoder on spare? maybe JJ has spares?
        • who keeps track of items not on the beamline? Sally? Service now? work in progress
  • Radiation safety
    • Dump sizing plot:
    • air attenuation in XRT enough? Yiping/Lin - early Feb
      • progress meeting soon
    • ray trace - progress beginning
      • data gathering in process
      • methodology? not decided yet
      • team? may ling, cherie landa, lance lee
    • exit windows - failure modes?
  • Detector - MIE



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