1. 1 BROOKHAVEN SCIENCE ASSOCIATES Powder Discussion Session Summary 1)What are the key scientific drivers? What experiments will NSLS-II enable that are not presently possible? 2)What technical capabilities will these require? (Beamlines, endstations, undulators…) 3)Estimate of community size. 4)What detector requirements does this field have? Do these require R+D? 5)What software and computing infrastructure requirements are there? (Control, data acquisition, analysis) 6)Any particular accelerator requirements? 7)Any particular conventional facility requirements?

2. 2 BROOKHAVEN SCIENCE ASSOCIATES Possible layout Two wiggler beamlines (programs? Instruments?) DAC? Multi-xtal? Strip-detector? Fixed-setup / multi-purpose? 3-pole wiggler / NSLS mover ?

3. 3 BROOKHAVEN SCIENCE ASSOCIATES What are the key scientific drivers? What experiments will NSLS-II enable that are not presently possible? Can provide key insights in the micron – nanometer scale Combinatorial chemistry and industrial processes Catalytic chemistry Materials defects Nucleation, growth / phase transformation / chemical kinetics Extreme conditions Faster, smaller higher throughput

4. 4 BROOKHAVEN SCIENCE ASSOCIATES What technical capabilities will these require? (Beamlines, endstations, undulators…) Several beamlines Should be geographically close SCW would be preferable for some experiments Both focused and unfocused beamlines are needed Environmental chambers Sample changers Detectors and software Sample characterisation / preparation in labs High throughput Tricky environment

5. 5 BROOKHAVEN SCIENCE ASSOCIATES Estimate of community size Wide range of communities with some commonalities Need to develop mailing list / do outreach

6. 6 BROOKHAVEN SCIENCE ASSOCIATES What detector requirements does this field have? Do these require R+D? Efficient position-sensitive detectors at higher energies Large solid-angle Graded solid angle for good high-q statistics Wide dynamic range (10^6)

7. 7 BROOKHAVEN SCIENCE ASSOCIATES What software and computing infrastructure requirements are there? (Control, data acquisition, analysis) robotic integration Analysis software Visualization and analysis in real time: this is real bottleneck Needs dedicated professional software effort to accomplish this Interactive detector setup software

8. 8 BROOKHAVEN SCIENCE ASSOCIATES Any particular accelerator requirements? Any particular conventional facility requirements? Superconducting wiggler Laser-heating Cryogenics Adequate power