Thank you for registering to participate in the HRIBF Users Workshop: HRIBF, Upgrade for the FRIB era. As you are aware, the information assimilated during this workshop will be incorporated into a white paper which will detail the science case in support of creating a modern ISOL facility at ORNL. A major focus of the workshop will be a number of breakout sessions, in which ideas for future opportunities and directions, made possible at HRIBF by the proposed driver upgrade, will be discussed in detail. In particular, these directions should be relevant to driving the facility forward to the challenges of the physics, instrumentation and training for FRIB.

As organisers for the breakout session on Nuclear Reactions, we are writing in invitation of contributions to this discussion. We remind you that these breakout sessions are intended to be focussed on round-table discussion, rather than a series of presentations, and as such will incorporate only a few short informal presentations to outline the scope of the subsequent discussions.

The session will begin at 13:00 on Friday 13th with lunch, and finish by 17:30 when the evening sessions begin. A summary of the session will be presented to the entire workshop audience on Saturday. We anticipate the Reactions session will be structured as follows.

1. A few short presentations detailing the scope of the upgraded facility for addressing specific science cases based on reaction measurements. These will include:
   • Fusion measurements
   • Direct reaction measurements
   • TDHF calculations
   • Tritium-induced reactions
   • Direct reaction theory
2. Discussion time
3. A few short presentations outlining the instrumentation required to exploit fully these opportunities. This will include:
   • Fission detection
   • Si arrays
   • Evaporation residue detection (Enge)
   • Solenoid
   • Radioactive targets
   • Charged-particle/gamma-ray array coupling
4. Discussion time

We look forward to your involvement in this session.

Felix Liang, ORNL
Walt Loveland, Oregon State University
Steve Pain, University of the West of Scotland
Dan Shapira, ORNL