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Powder Discussion Session Summary

Powder Discussion Session Summary. What are the key scientific drivers? What experiments will NSLS-II enable that are not presently possible? What technical capabilities will these require? (Beamlines, endstations, undulators…) Estimate of community size.

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Powder Discussion Session Summary

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

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

  3. 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. 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. Estimate of community size • Wide range of communities with some commonalities • Need to develop mailing list / do outreach

  6. 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. 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. Any particular accelerator requirements?Any particular conventional facility requirements? • Superconducting wiggler • Laser-heating • Cryogenics • Adequate power

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