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CHESS-U as a pulsed x-ray source with high-bunch-charge and flexible timing

This one-day workshop will explore new scientific opportunities made possible when the upgraded CHESS-U storage ring has flexibility to optimize particle bunch size(s) and bunch timing. At a time when many high-energy storage ring facilities are moving to lower bunch charge to create higher coherence, the Cornell source will instead optimize for maximum x-ray flux and can therefore consider running with large bunches and unique bunch timing. The possibility of high bunch charge (up to 50 nanoCoulombs) and flexible timing (from 14 to 644 nanoseconds) came to fore after the science workshops held during summer 2016, hence those capabilities were not explored in the science case study published in Fall 2016. This workshop as three goals: 1) identify science opportunities enabled by an x-ray source with flexible pulse structure, 2) identify machine parameters and performance goals to help shape the priorities for the accelerator and x-ray beamline design teams, and 3) identify unique contributions CHESS can make. In some case these goals can be communicated well by outlining a set of “first experiments” that users would like to carry out on the upgraded CHESS-U source.

 

Invited speakers:

Dr. Philip Anfinrud, Senior Investigator, National Institute of Diabetes and Digestive and Kidney Diseases, NIH • Dr. Arwen Pearson, Hamburg Centre for Ultrafast Imaging, Center for Free-Electron Laser Science (remote participant) • Dr. Keith Moffat, University of Chicago • Dr. Todd C. Hufnagel, Johns Hopkins University • Dr. Jonathan Lind, Lawrence Livermore National Laboratory • Dr. Brian Jensen, Los Alamos National Laboratory and Team Leader, Dynamic Compression Sector at APS • Dr. Donald Walko, Argonne National Laboratory • Dr. Ercan E. Alp, Argonne National Laboratory • Dr. Lin X. Chen, Argonne National Laboratory and Northwestern University (remote participant) • Dr. James Shanks, Accelerator Physics Group, CHESS/Cornell University • Dr. Julian Becker, Detector Development Group, CHESS/Cornell University • Dr. Joel Bernier, Lawrence Livermore National Laboratory

 

Agenda:

Thursday, March 9   -   Biotech G10, Cornell University, Ithaca, NY 14853

8:00

Welcome, setup IT (coffee and breakfast provided)

8:20

CHESS-U and Workshop Goals

Ernest Fontes (Associate Director, CHESS)

8:30

CHESS-U Storage Ring Overview

Jim Shanks (CHESS/Cornell University)

9:00

Detector challenges for timing applications

Julian Becker (CHESS/Cornell University)

9:30

BREAK

 
Biomolecules and Biomaterials session: Marian Szebenyi, moderator
 

9:45

What can structural biologists do with single bunches?

Keith Moffat (Argonne National Laboratory, University of Chicago)

10:15

Reaction initiation for time-resolved experiments

Arwen Pearson (Hamburg Centre for Ultrafast Imaging, Center for Free-Electron Laser Science)

10:45

Time-resolved x-ray studies of biomolecules

Philip Anfinrud (Senior Investigator, National Institute of Diabetes and Digestive and Kidney Diseases, NIH)

 
Condensed Matter and Materials session: Ken Finkelstein, moderator
 

11:15

Ultrafast Electronic and Nuclear Structural Dynamics of Transition Metal Centers in Small Complexes and in Protein Matrix

Lin X. Chen (Argonne National Laboratory & Northwestern)

11:45

Time-resolved x-ray diffraction opportunities at high-flux, high-energy sources

Don Walko (Argonne National Laboratory)

12:15

LUNCH with staff

13:15

Timing and Bunch Pattern Requirements for Nuclear Resonant Scattering Experiments

Ercan E. Alp (Argonne National Laboratory)

 
Structural Materials session: Darren Pagan, moderator
 

13:45

Time-resolved diffraction and imaging studies of materials under dynamic loading

Todd C. Hufnagel (Johns Hopkins University)

14:15

BREAK

14:30

Using X-ray diagnostics to study matter at extreme conditions

Brian Jensen (Los Alamos National Laboratory)

15:00

Probing the Dynamic Response of Ordered Lattice Materials With Phase Contrast Imaging

Jonathan Lind (Lawrence Livermore National Laboratory)

15:30

Synchronous techniques to probe equations of state, phase transitions, and plastic relaxation

Joel Bernier (Lawrence Livermore National Laboratory)

16:00

ADJOURN to Statler (Princeton room) for refreshment and discussion

18:00

DINNER (Statler Hotel, Taverna Banfi Costello room)

 

Map and Directions to Biotech G10:

 
 

Organized by:

Ernest Fontes

 

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