1. page 1 of 5 Thermal power management TWG direction and plans ARIES Project Meeting 13 December 2007 M. S. Tillack, A. R. Raffray

2. page 2 of 5 Current Status, as far as I know it Detailed memo on “system integration” R&D needs using DCLL reference by S. Malang Work by Tillack/Stromsoe on high-temperature compatibility  Literature review drafted, focused on PbLi, SS and SiC  Discussions with Sze (UCSD), Pint (ORNL), Calderoni (INL), Konishi et al. Work by A. Turnbull on power handling  Issues described in Sept. ARIES presentation  Need to evolve toward metrics and milestones Need to focus the effort and start writing  Still debating goals, approach, assumptions, … Change in direction proposed to focus on methodology vs. R&D planning

3. page 3 of 5 R&D Needs and Priorities Subgroup – Approach and Tasks – Document current status of R&D  In the US  Worldwide Characterize the R&D gaps  To a power plant  To a CTF/Experimental power reactor Develop R&D plans and options Describe thematic challenges to the extent possible Define metrics and milestones independent of concepts Apply methodology as appropriate Previous guidance (June 07)

4. page 4 of 5 Report Draft Outline 1 Preface (Tillack) I. Introduction (Tillack) II. Program Goals (Steiner) (what level of knowledge and performance is needed to proceed to Demo? What are the key metrics for power management?) III. Current state of knowledge a. Plasma power distribution (Turnbull) b. High heat flux handling (Raffray) c. Materials compatibility (Tillack) d. Systems integration (Malang) e. Development and fabrication (Waganer) IV. R&D Needs (gaps in knowledge) a. Plasma power distribution (Turnbull) b. High heat flux handling (Raffray) c. Materials compatibility (Tillack) d. Systems integration (Malang) e. Development and fabrication (Waganer) V. Development Paths (TBD ) (how can we close these gaps, i.e., with experiments and modeling?) Report Draft Outline 2 Preface (Tillack) I. Introduction (Tillack) II. Issues, metrics and milestones a, b, c, d, e III. Current state of knowledge a, b, c, d, e IV. R&D Needs (gaps in knowledge) a, b, c, d, e V. Evaluations (TBD ) (application of the methodology to evaluate various R&D proposals) a. Plasma power distribution (Turnbull) b. High heat flux handling (Raffray) c. Materials compatibility (Tillack) d. Systems integration (Malang) e. Development and fabrication (Waganer)

5. page 5 of 5 TWG Schedule Dec 2007Jan 08Feb 08Mar 08April 08May 08June 08 Define metrics and milestones Interim reportFinal report Document ARIES Meetings Status and gaps Tasks ARIES conf calls Evaluations