Two-half-day scientific program consists of comprehensive talks and open discussion. MeV UED has evolved as a powerful tool for exploring the ultrasmall and ultrafast world with a sub-Å spatial resolution and ~100 fs temporal resolution, enabling ground-breaking studies in material science and condensed matter physics. The great success of MeV UED has provided significant complements to LCLS’s X-ray-based instruments. Recent developments in SLAC MeV-UED instrumentation further open up new research avenues for probing non-equilibrium dynamic processes in materials through dedicated in-situ/operando experiments with various stimuli, such as light, electrical pulse, thermal heating and cooling, as well as mechanical stress. These capabilities are of paramount importance for providing fundamental insights into the “structure-dynamics-property” relationship of materials in their native or working conditions. The main objectives of this workshop are: 

1. Present recent developments and applications of in-situ MeV UED techniques 
2. Bridge expertise of advanced in-situ techniques and applications from electron microscopy, X-ray and optical spectroscopy 
3. Identify high impact research topics that can be addressed by in-situ UED 
4. Identify current challenges and future perspectives of the instrument developments that are needed to advance in situ UED techniques 

We expect this workshop could provide a platform for sharing researches on state-of-the-art in-situ techniques and would greatly expand MeV-UED user base in condensed matter physics and material science communities.

Organizers:

Duan Luo

Xiaozhe Shen

1:00 PM Welcome Michael P. Minitti, SLAC National Accelerator Laboratory

1:10 PM Workshop Introduction Duan Luo, SLAC National Accelerator Laboratory

1:25 PM Capabilities for the SLAC in-situ MeV UED Xiaozhe Shen, SLAC National Accelerator Laboratory

1:50 PM Scientific opportunities for the SLAC in-situ/operando UED (overview) Aaron Lindenberg, Stanford/SLAC

2:25 PM Current status and future directions for in-situ ultrafast electron microscopy Thomas LaGrange, École Polytechnique Fédérale de Lausanne

3:00 PM Break & Coffee & Photo

3:15 PM Universal phase dynamics in VO2 switches revealed by ultrafast operando diffraction Aditya Sood, Stanford University

3:45 PM Advanced in-situ TEM techniques and opportunities for ultrafast electron probes J.G. Wen, Argonne National Laboratory

4:15 PM Advanced in-situ X-ray techniques Apurva Mehta, SLAC National Accelerator Laboratory

4:45 PM Quick discussion on different in-situ techniques