Name: 1st Hard X-ray Self-seeding Workshop (HXRSS 2025)
Start: 2025-10-15T01:30:00+09:00
End: 2025-10-17T22:45:00+09:00
Location: PAL, Pohang, Korea

Monday, October 13, 2025
Tuesday, October 14, 2025
Wednesday, October 15, 2025

7:30 AM Bus Pickup and Transfer to Venue
Bus Pickup and Transfer to Venue
7:30 AM - 8:20 AM

8:00 AM Registration
Registration
8:00 AM - 9:00 AM
Room: PAL-XFEL Auditorium
9:00 AM
9:00 AM - 11:00 AM
Room: PAL-XFEL Auditorium
Contributions

9:00 AM Workshop introduction and goals - general introduction to HXRSS - Gianluca Geloni (European XFEL)

9:20 AM Coherence Control and Limitation with HB SASE - Philipp Dijkstal (Paul Scherrer Institut)

9:45 AM Extrapolation of EEHG towards higher photon energies - Enrico Allaria (Elettra - Sincrotrone Trieste)

10:10 AM Overview of cavity based XFEL activities - Nanshun Huang (Shanghai Optoelectronic Science and Technology lnnovation Center)

10:35 AM The cavity-based XFEL demonstrator at the European XFEL - Patrick Rauer (Deutsches Elektronen-Synchrotron DESY)
11:00 AM Coffee Break
Coffee Break
11:00 AM - 11:20 AM
Room: PAL-XFEL Auditorium
11:20 AM
11:20 AM - 1:30 PM
Room: PAL-XFEL Auditorium
Contributions

11:20 AM Self-seeding FEL for experiments requiring energy scans at PAL-XFEL - Haeryong Yang (Pohang Accelerator Laboratory)

11:45 AM High repetition rate HXRSS system at the European XFEL - Shan Liu (DESY)

12:10 PM Recent activities of hard X-ray self-seeding at LCLS - Alberto Lutman (SLAC)

12:35 PM Daily optimization of reflection self-seeding - Toru Hara (RIKEN SPring-8 Center)

1:00 PM Discussion (B)
1:30 PM Lunch
Lunch
1:30 PM - 2:30 PM
Room: Multipurpose room
2:30 PM
2:30 PM - 4:30 PM
Room: PAL-XFEL Auditorium
Contributions

2:30 PM Self-seeding option and status at SHINE - Tao Liu (Shanghai Advanced Research Institute, CAS)

2:55 PM Bandwidth and signal to noise ratio control for hard X-ray self-seeding - Tianyun Long (DESY)

3:15 PM Pulselength Control in Self-Seeding - Philipp Dijkstal (Paul Scherrer Institut)

3:35 PM Development and applications of combined self-seeding and crystal optics - Ichiro Inoue (The University of Tokyo)

4:00 PM Discussion (C-I)
4:30 PM
4:30 PM - 6:00 PM
Room: PAL-XFEL Auditorium
Contributions

4:30 PM Accelerator Demo.

4:30 PM Beamline Demo.
6:00 PM

6:00 PM - 8:00 PM

8:00 PM Move to Hotel Lahan
Move to Hotel Lahan
8:00 PM - 8:30 PM
Thursday, October 16, 2025

7:30 AM Bus Pickup and Transfer to Venue
Bus Pickup and Transfer to Venue
7:30 AM - 8:20 AM

8:00 AM Breakfast
Breakfast
8:00 AM - 9:00 AM
Room: PAL-XFEL Auditorium
9:00 AM
9:00 AM - 11:10 AM
Room: PAL-XFEL Auditorium
Contributions

9:00 AM Generation of tunable phase-locked hard X-ray pulses - Philipp Dijkstal (Paul Scherrer Institut)

9:20 AM Comparison same bunch and fresh bunch self seeding at PAL - Myunghoon Cho (Pohang Accelerator Laboratory)

9:40 AM Self-seeding at higher harmonics - lu cao (Deutsches Elektronen-Synchrotron DESY)

10:00 AM Self-seeding systems for CW FELs - Remote - David Reis (Stanford PULSE Institute)

10:20 AM Advanced studies at the LCLS - Remote - Aliaksei Halavanau (SLAC National Accelerator Laboratory)

10:40 AM Discussion (C-II)
11:10 AM Coffee break
Coffee break
11:10 AM - 11:30 AM
Room: PAL-XFEL Auditorium
11:30 AM
11:30 AM - 1:15 PM
Room: PAL-XFEL Auditorium
Contributions

11:30 AM IXS challenges - Remote - Mark Dean

11:55 AM Dynamics of compressed gas/liquid (CO2, water, alcohol) - Matthias Ihme (Stanford University)

12:20 PM Water dynamics - Robin Tyburski (Stockholm University)

12:45 PM Discussion (D-I)
1:15 PM Lunch
Lunch
1:15 PM - 2:15 PM
Room: Multipurpose room
2:15 PM
2:15 PM - 3:35 PM
Room: PAL-XFEL Auditorium
Contributions

2:15 PM Time-resolved Bragg Coherent X-ray Diffraction Imaging of Ferroelectric Transition - Hyunjung Kim (Soagng University)

2:40 PM 3D time-resolved single-shot imaging - Changyong Song (POSTECH)

3:05 PM Discussion (D-II)
3:35 PM

3:35 PM - 5:05 PM
Room: PAL-XFEL Auditorium

5:05 PM Move to restaurant
Move to restaurant
5:05 PM - 5:35 PM
Room: PAL-XFEL Auditorium

5:35 PM

5:35 PM - 7:15 PM
Friday, October 17, 2025

7:30 AM Bus Pickup and Transfer to Venue
Bus Pickup and Transfer to Venue
7:30 AM - 8:20 AM

8:00 AM Breakfast
Breakfast
8:00 AM - 9:00 AM
Room: PAL-XFEL Auditorium
9:00 AM
9:00 AM - 10:45 AM
Room: PAL-XFEL Auditorium
Contributions

9:00 AM Single-shot structure determination under high magnetic field over 100 T - Akihiko Ikeda (University of Electro-Communications, Tokyo, Japan)

9:25 AM Atomic-scale imaging of strong-field optically induced electron motion in imperfect crystals - Remote - David Reis (Stanford PULSE Institute)

9:50 AM Scandium-45 Nuclear-Clock Isomer driven by hard X-ray self-seeding - Remote - Yuri Shvydko (Argonne National Laboratory)

10:15 AM Discussion (D-III)
10:45 AM Coffee break
Coffee break
10:45 AM - 11:05 AM
Room: PAL-XFEL Auditorium
11:05 AM
11:05 AM - 1:20 PM
Room: PAL-XFEL Auditorium
Contributions

11:05 AM Application of hard X-ray self-seeding at higher photon energies - Angel Rodriguez Fernandez (European XFEL)

11:30 AM Nonlinear spectroscopy utilizing two-color pulses composed of seeded and broadband beams - Thomas Linker (SLAC)

11:55 AM Ultrafast Photocatalytic Reaction Dynamics Probed by HERFD-XAS with Self-seeded XFEL Pulses - Tae Wu Kim (Kyung Hee University)

12:20 PM Discussion (D-IV)

12:50 PM Overall discussion and wrap-up
1:20 PM Lunch box pickup & Move to Pohang KTX station
Lunch box pickup & Move to Pohang KTX station
1:20 PM - 2:00 PM
Room: PAL-XFEL Auditorium