The Proposed HIGS2 Facility

The High Intensity Gamma Source (HIGS) at the Triangle Universities Nuclear Laboratory (TUNL) is currently the most intense accelerator-driven gamma-ray source in the world.   Scientists from about 35 institutions use the gamma-ray beams at the HIGS for basic and applied nuclear physics research.  The proposed next generation Compton gamma-ray source at TUNL, which is referred to as the HIGS2, will deliver more than two orders of magnitude higher beam intensity to targets than is currently available at HIGS, provide enhanced beam polarization control, and be capable of producing beams with energy resolutions as low as about 0.1%, which is a factor of ten smaller than currently achievable at HIGS.  A description of the HIGS2 concept and the projected beam performance parameters are given at


This workshop will bring together physicists who are interested in conducting research with high-intensity gamma-ray beams to discuss and develop research directions made possible by HIGS2.


  • Hadronic Parity Violation
  • Nuclear Astrophysics
  • Nuclear Structure
  • Search for Dark Particles


The workshop will open on Monday morning June 3rd with overview talks on the topics listed above.   Monday afternoon the participants will break into topical working groups where concepts for research projects will be discussed and developed.  Each working group will have a leader to moderate the discussions and give a summary of the group’s proposed research program at the workshop closeout session.  Those wishing to make a presentation during a working group meeting should submit a research prospectus by May 7th following the instructions given here.   Each presenter will be asked to leave slides with the working group leader to be used in writing the workshop white paper.   As time permits, participants may be allowed to make spontaneous presentations and to engage in follow-up discussions.


A primary outcome of the workshop will be a document describing the physics research opportunities at the HIGS2, including the priorities of the community, and providing a concept design report that includes beam performance projections and cost and schedule estimates.


  • M. Ahmed (NCCU)
  • A. Champagne (UNC)
  • R. Henning (UNC)
  • C. Howell (Duke)
  • M. Snow (Indiana)
  • R. Springer (Duke)
  • J. Thaler (MIT)
  • Y. Wu (Duke)