Friday, Sept 29

Several parallel workshops are being planned for Friday, September 29. This program will be updated as details are finalized.

Morning Sessions

Afternoon Sessions


  • Computational Workflows for X-Ray Science (SUSB 053-1350 Trinity)
    • Organizers:  Christine Sweeney, Hari Krishnan, James Sethian, Chuck Yoon
    • A beam line workflow is the composition of tasks completed by scientists, beam line instruments and computers that together enable the derivation of scientific results.  Increasing data volumes and acquisition rates require workflows to keep pace with live experiments and to do timely data post-processing.  The acceleration of one task on its own is beneficial, but is not usually enough to impact scientific discovery.

      This workshop highlights novel beam line computational workflows that are used in practice or are being developed in order to more efficiently process data at X-ray science user facilities including LCLS, LCLS-II and SSRL.  Workflows of interest include data manipulation, analysis and visualization, computational tools for collaboration between experimenters, and high-performance computing at a user facility or at a computing facility across a network.
    • Invited Speakers & Program:
    • 8:00 am Alexander Hexemer, Lawrence Berkeley National Laboratory
      8:50 am Amedeo Perazzo, LCLS/SLAC
      9:20 am Benedikt Daurer, Uppsala University
      9:50 am Apurva Mehta, SSRL/SLAC
      10:20 am Break
      10:50 am Richard Sandberg, Los Alamos National Laboratory
      11:20 am Thomas Caswell, Brookhaven National Laboratory
      11:50 am Wrap up discussion


  • Detectors for Photon Science (051 Kavli Auditorium)
    • Organizers: Gabriella Carini, Sang-Jun Lee
    • Detectors are an important component of the experiment. With the expected upgrades, advances in detectors are needed to exploit the capabilities of the new light sources. This workshop will provide the opportunity for a forum where users can share their experience with detectors at LCLS and SSRL as well as their needs for LCLS-II. A special topic of the workshop is ’Transition Edge Sensor (TES) for photon science’. Ongoing R&D efforts for LCLS-II will also be presented.
    • Invited Speakers:
      Angelo Dragone, SLAC - ePix for LCLS-II
      Peter Denes, Lawrence Berkeley National Laboratory - vfCCD for LCLS-II
      Farah Fahim, Fermilab - FLORA for LCLS-II
      Kelsey Morgan, NIST - TES at SSRL and other light sources
      Dale Li, SLAC - TES for LCLS-II
      Demonstration: Demo/talk using real-time data from an experiment at SSRL
      • Presenters: Sang-Jun Lee, SLAC and Jamie Titus, Stanford University


  • Chemical Dynamics (SUSB 053-1320 Panofsky Auditorium)
    • Organizers: Kristoffer Haldrup
    • This workshop focuses on the newest results in ultrafast chemistry studied with LCLS. Specific areas of focus are the interplay between electronic and geometric structure and the interactions between solute molecules and their surroundings and how such interactions can determine the ultimate outcome of photoreactions. The workshop will further address possibilities and challenges for the field as new sources such as LCLS-II become operational within the next few years.
    • Invited Speakers:
      Kasper Skov Kjær, SLAC/Lund University - Manipulating the excited state cascade of iron coordination compounds with through ligand- and solvent substitution
      Junko Yano, Lawrence Berkeley National Laboratory - Water Oxidation Reaction in Photosystem II studied with XFELs
      Sebastian Westenhoff, University of Gothenburg, Sweden - Dissociation of molecules capture by femtosecond X-ray solution scattering
      Lin X. Chen, Northwestern University/Argonne National Laboratory - Probing Effect of Coherent Nuclear Motions in Photochemical Proceeses
      Gyorgy Vanko, Wigner Research Centre, Budapest
      Discussion session: XFEL studies of Chemical dynamics - perspectives toward 2025
      • Discussion Leader: Amy Cordones-Hahn, PULSE/SLAC

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  • Advanced X-ray Spectroscopy at SLAC:  From Theory to Experimental Concepts (SUSB 053-1320 Panofsky Auditorium)
    • Organizers:  Das Pemmaraju, Ritimukta Sarangi, Thomas Kroll, Chunjiang Jia (Stanford University/SLAC)
    • This workshop will bring together leading experts in x-ray spectroscopy simulation to provide their perspectives on state-of-the-art theoretical methods for interpreting and understanding core-level spectroscopies accessible to SSRL/LCLS experimental efforts. The emphasis of the workshop will be on enabling a wider understanding among SSRL/LCLS users, of the diversity of theoretical approaches available, their relevance to cutting-edge experiments at SSRL/LCLS investigating electronic structure and dynamics in different application domains and their potential extension to the non-linear x-ray spectroscopy regime looking ahead to LCLS-II.  To this end, this half-day workshop will feature six invited talks by experts developing complementary simulation methods so that users can be better informed regarding the simulation techniques and tools that are best suited to their research domain. The work shop will also provide ample time for interactive discussion oriented towards addressing challenges faced by users in interpreting experimental data and identifying emerging simulation needs in the SSRL/LCLS user community.
    • Invited Speakers & Program:
    • 12:45 pm Opening Remarks
      12:50 pm Frank De Groot, Utrecht University
      1:30 pm Tom Devereaux, Stanford University
      2:10 pm John Rehr, University of Washington
      2:50 pm Coffee Break
      3:10 pm David Prendergast, Lawrence Berkeley National Laboratory
      3:50 pm Oliver Kuehn, University of Rostock
      4:30 pm Yu Zhang, Stanford PULSE/SLAC - Nonlinear x-ray spectroscopy of molecules — simulation methods, applications and challenges
      5:10 pm Open Discussion
      5:10 pm Adjourn


  • Coherent Diffractive Imaging at LCLS (051 Kavli Auditorium)
    • Organizers: Ross Harder, Andy Aquila
    • One of the primary science drivers for the creation of LCLS was high-resolution coherent imaging of individual particles and molecules. In recent years Bragg Coherent Diffraction Imaging (BCDI) has been used to study the propagation of phonons and transient melting in nanocrystals and the Single Particle Imaging (SPI) initiative has resulted in high resolution imaging of both organic and inorganic objects in 3D.  This workshop will serve to update the LCLS community on these efforts and showcase the most recently developed capabilities.
    • Invited Speakers:
      Anton Barty, DESY
      Mathew Cherukara, Argonne National Laboratory
      Benedikt Daurer, Uppsala University
      Ruslan Kurta, European XFEL
      Mengning Liang, SLAC
      Filipe Maia, CXIDB & Uppsala University    


  • Hands-on Data Analysis Workshop (SUSB 053-1350 Trinity)
    • Organizers: Chris O'Grady, Chuck Yoon, Clemens Weninger, Mikhail Dubrovin
    • This is a hands-on tutorial demonstrating features of the LCLS data analysis: simpler data access with python, ability to parallelize analysis over hundreds of cores using MPI, and ability to run the same simpler code online and in parallel for realtime analysis of the full 120Hz LCLS shot-rate.
      • Recommended prerequisites for full participation: A laptop computer with X11 graphics and "ssh" software installed (a free version for windows/mac is described here: You can use an existing LCLS computer account if you have one, if you do not have an account one will be provided.


  • Scientific Opportunities usng Ultrafast Electron Diffraction (UED) (SUSB 053-2002 Berryessa, with afternoon breakout also upstairs in Havasu, Almanor)
    • Organizers:  Xijie Wang, Thomas Wolf, Aaron Lindenberg (Stanford University/SLAC)
    • This workshop is aimed at existing and future users interested in experiments at SLAC's megaelectronvolt ultrafast electron diffraction (UED) facility. In a series of plenary talks, we will give an introduction into current and future capabilities of the UED facility and highlight research achievements from gas phase and solid state experiments. The plenary session is followed by a number of parallel breakout sessions focusing on future research ideas in AMO science, ultrafast photochemistry, time-dependent phenomena in solid samples, and investigations into warm dense matter. For these breakout sessions, we invite participants to prepare 5 minute long presentations on their experimental ideas. To present your experimental ideas, email Thomas Wolf or Aaron Lindenberg.
    • Invited Speakers:
      Nuh Gedik, MIT
      Haidan Wen, Argonne National Laboratory
      Alex Reid, SLAC
      Markus Guehr, University of Potsdam
      Todd Martinez, SLAC
      Jie Yang, SLAC
      Thomas Weinacht, Stony Brook University
      Matteo Savoini, ETH Zurich
    • Tentative Program:
    • 1:00 pm Plenary Session:
        Ultrafast material science - Nuh Gedit (MIT) 
        Ultrafast chemical dynamics - Todd Martinez (SLAC)
        Instrument talk - Jie Yang (SLAC) 
        Gas phase results - Markus Guehr (Univ. Potsdam) 
        Material science results - Alex Reid (SLAC) 
      3:00 pm Coffee Break
      3:30 pm Breakout Sessions:
        Ultrafast photophysics and photochemistry
        Material science
        Warm dense matter
      5:00 pm Plenary Session Close Out


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