Figure(s) Summary (breakout session name) Science Opportunity #1 Science Challenge/Opportunity –Describe an important open science question in your field that can be advanced by the capabilities of LCLS-II –What is impeding progress?, Why now – why is this timely? Significance & Impact –Why is this science opportunity important? –What is the potential broader impact if we can answer this question? LCLS-II Strengths & Challenges –What is the expected result or key advance from LCLS-II? i.e. What essential information or insight might be provided by LCLS-II that is not available from other means? short figure caption or label

Science Opportunity #1 - Experimental Approach Figure(s) short figure caption or label Techniques(s) –What physical properties will be explored in this research? –What are the most relevant experimental methods or techniques? Tools –What are the experimental tools required? –What are significant additional challenges: X-ray requirements, detector requirements, instrumentation R&D etc.? –Reference any relevant existing tools or highlight needs for further development Required LCLS-II Parameters –Highlight the key LCLS-II parameters that are required for this science opportunity

Figure(s) Summary (breakout session name) Science Opportunity #N Science Challenge/Opportunity –Describe an important open science question in your field that can be advanced by the capabilities of LCLS-II –What is impeding progress?, Why now – why is this timely? Significance & Impact –Why is this science opportunity important? –What is the potential broader impact if we can answer this question? LCLS-II Strengths & Challenges –What is the expected result or key advance from LCLS-II? i.e. What essential information or insight might be provided by LCLS-II that is not available from other means? short figure caption or label

Science Opportunity #N - Experimental Approach Figure(s) short figure caption or label Techniques(s) –What physical properties will be explored in this research? –What are the most relevant experimental methods or techniques? Tools –What are the experimental tools required? –What are significant additional challenges: X-ray requirements, detector requirements, instrumentation R&D etc.? –Reference any relevant existing tools or highlight needs for further development Required LCLS-II Parameters –Highlight the key LCLS-II parameters that are required for this science opportunity

Science vs. Method RIXSXESLiquid scattering XASAmbient Pres. PES ? Science Opportunity #1 XX Science Opportunity #2 X

Method vs. Parameter Pulse duration BandwidthAverage Flux Flux/pulsePhoton energy range (eV) ? RIXS30 fs 1x10 -5  E/E 1x10 16 ph/s1x APPES50 fs 1x10 -5  E/E 1x10 11 ph/s1x10 7 ?20 meV ?

This slide should provide some answers to the most relevant questions from the workshop handout : Workshop questions and LCLS-II nominal parameters (or pose and answer other relevant questions) Also include any other important issues not captured in the previous tables –Lasers, detectors, optics, sample environment, diagnostics, etc. Summary (breakout session name) Required Source Properties & Capabilities

Workshop Charge  Identify most important science drivers (transformational, grand challenge level) that can uniquely be addressed using capabilities of LCLS-II (high rep rate <5 keV, 1-25 keV at 120 Hz)  Near-term science consistent with LCLS-II baseline  Future science consistent with potential LCLS-II upgrades  Succinct statement of why this science is transformational What are important outstanding questions in your field? Why have they not been answered (what is impeding progress, why now, why LCLS-II)? What is the potential broader impact if we can answer these questions (why are they important)?  Identify key capabilities, consistent with nominal LCLS-II baseline (and upgrades – secondary)  Photon flux, pulse duration, rep rate, tuning, polarization, etc.  Map out experimental approach and key requirements for:  Beamline optics, endstation(s), detectors, lasers, sample injectors etc.  Compare experimental approach to current state-of-the art & assess alternative approaches  Can the experimental approach leverage existing instrumentation/expertise? What R&D is required?  Can the science be done with other existing sources? (e.g. diffraction-limited synchrotrons, table-top HHG, etc.)