MOLLER Pion Background Meeting Wednesday, October 26, 2016 3:00pm EST

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Previous Meeting: MOLLER_Pion_Background_Meeting_Wednesday,_October_19,_2016_3:00pm_EST

Meeting Information

BlueJeans Call Information


Phone Number: 1-800-240-2560

Meeting ID: 624029893


  • Scott: Implementation of lead wall and strawman pion detector.
    • Separate pion development branch
    • Initial detector prototype.
  • Jacob: Starting to work on pion simulations.
  • Initial plan: Implement single septant pion detector behind lead wall.
    • To be placed behind Moller ring to begin with.
    • Lead tungstate(PbWO_4) blocks.
    • Wouter's initial concept of the pion detector geometry.
  • Any new business?


Attendees: Mark P. David, Scott, Kurtis, KK, Seamus, Jacob, Rakitha, Wouter

Not Attending:

Scribe: Kurtis

  • Mark P.: For the Director's review really is a bit more than a simple concept for the pion detector.
  • KK: To David, don't worry about the absolute cost at this point. Just estimate the lead tungstate cost verses a lead lucite type of material for the detectors.
    • Also Mainz, has lead flouride cystrals in storage that could be used.
    • Javier would need rough cost estimate by late next week. Then consider the number of GEM planes that we will need.
    • KK: A week from today should be good for Javier. A basic cartoon would be great to start with.
    • David: A pair of septants for tracking would be fine to start with, do we need to rotate them? Like with Qweak?
    • KK: Agrees, since we should already have the concept of a rotator figured out for the other GEMS.
    • Mark: Purpose of GEMS again? David: Not for kinematic determination, mostly for particle id. A few mm precision should be good.
  • Just worried about the order magnitude cost per gram, we should be good to start with the cost estimate.
  • Included 10-15% increase to cover the custom geometry.
  • Wouter: Will look into older quotes for the Hall C Compton detector.
  • David: Present no updates in terms of pion simulations. Mostly working on rough estimates for the lead lucite detector cost.
  • David: Will get the cost estimate for the lead or tungsten for the wall. Then will present by next week's meeting to the rest of the group. Then David will meet with Javier the following Thursday to brief him.
  • David: If we go with the lead lucite, how do we get the light, will require more thought.