Please visit Jefferson Lab Event Policies and Guidance before planning your next event:

Positron Working Group Workshop

Lower West Oval Room, UVA Rotunda

Lower West Oval Room, UVA Rotunda

Axel Schmidt (George Washington University), Douglas Higinbotham (Jefferson Lab), Eric Voutier (CNRS/IN2P3/IJCLab - UPS), Xiaochao Zheng (University of Virginia)

LOCATION:  The meeting will take place in the lower west room of the historic UVA Rotunda:  For those not familiar with the UVA campus, maps are located here:


HOTELS:   There are many hotels in the C'ville area to pick from.   Some nearby options that would let you walk to the Rotanda are: or the    But their are many more, so please do a search to find the option that works best for you.


PARKING:  If you are at an nearby hotel, walking or an Uber/Lyft is an easy way to get to the Rotunda, though there is a parking garage located about a 10 min. walk from the Rotunda.   NOTE:   There are also some small private lots located nearby that can be found via Google/Apple map search.

Central Grounds Garage: The Central Grounds Garage is conveniently located under the University Bookstore at 400 Emmet Street, and is near Newcomb Hall, Memorial Gymnasium, Brown College, and the Clemons Library. Hourly parking may be paid via the ParkMobile app.


PHOTOS from the event:

  • Tuesday, March 7
    • 9:00 AM
      Morning Coffee
    • 1
      Speaker: Prof. Xiaochao Zheng (University of Virginia)
    • 2
      Introduction & charge
      Speaker: Dr Eric Voutier (Universtié Paris Saclay - IJCLab)
    • 3
      Overview of the JLab positron physics program
      Speaker: Prof. Andrei Afanasev (George Washington University)
    • 4
      The long term future of Jefferson Lab
      Speaker: Dr Cynthia Keppel (Jefferson Lab)
    • 11:00 AM
      Short Break
    • 5
      Ce+BAF concept and the challenging polarized e- source
      Speaker: Dr Joe Grames (Jefferson Lab)
    • 6
      Positron target design and fatigue studies
      Speaker: Dr Andriy Ushakov (Jefferson Lab)
    • 7
      Workshop Photo
    • 12:20 PM
    • 8
      A direct measurement of hard Two-Photon Exchange with positrons at CLAS12
      Speaker: Prof. Axel Schmidt (George Washington University)
    • 9
      Super-Rosenbluth measurements with positrons to study the Two-Photon Exchange
      Speaker: Dr Michael Nycz (University of Virginia)
    • 10
      Status of the C3q proposal
      Speaker: Prof. Xiaochao Zheng (University of Virginia)
    • 3:00 PM
      Afternoon Coffee
    • 11
      Status of the DVCS proposals
      Speaker: Carlos Munoz Camacho (IJCLab, Orsay (CNRS/IN2P3))
    • 12
      Clean measurement of the nucleon axial-vector form factor
      Speaker: Dr Alexandre Deur (Jefferson Lab)
    • 4:30 PM
      End Of Day Open Discussion
  • Wednesday, March 8
    • 9:00 AM
      Morning Coffee
    • 13
      Axial structure of the nucleon with positron capture at medium energies
      Speaker: Prof. Dipangkar Dutta (Mississippi State University)
    • 14
      A' search with the positron beam in missing mass approach
      Speaker: Dr Bogdan Wojtsekhowski (Jefferson Lab)
    • 15
      Positron and electron polarimetry at modest beam energies
      Speaker: Dr Dave Gaskell (Jefferson Lab)
    • 11:00 AM
      Short Break
    • 16
      Concept of a polarized positron injector for CEBAF
      Speaker: Sami Habet (Universtié Paris Saclay - IJCLab - Jefferson Lab)
    • 17
      Delivering e+ beams from LERF through Ce+BAF
      Speaker: Dennis Turner (Jefferson Lab)
    • 12:15 PM
    • 18
      Low-energy lepton-proton scattering of mu-, mu+, e- and e+ with the MUSE experiment at PSI
      Speaker: Prof. Michael Kohl (Hamton University)
    • Discussion on the Evolution of the JLab PWG
    • 3:00 PM
      Afternoon Break
    • 19
      An electron and positron beam facility at DESY
      Speaker: Prof. Douglas Hasell (Massachusetts Institute of Technology)
    • 20
      Polarized e- and e+ beams for rare isotopes studies at FRIB
      Speaker: Prof. Paul Gueye (Michigan State University)
    • 4:30 PM
      End Of Day Open Discussion