The 5th PAL-XFEL Users' Meeting

Jul 2, 2025, 12:00 PM → Jul 3, 2025, 6:30 PM Asia/Seoul

POSCO International Center, POSTECH

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Wednesday, July 2

12:00 PM → 1:00 PM Registration

1:00 PM → 1:10 PM Welcome Remarks

1:10 PM → 1:30 PM Status Reports

Convener: Dr Intae Eom (PAL)

1:30 PM → 2:00 PM Invited Talk I

1:30 PM Liquid-like spin dynamics in square-lattice iridates

Speaker: Prof. Bumjoon Kim (POSTECH)

2:00 PM → 2:20 PM Coffee break

2:20 PM → 2:50 PM Invited Talk II

2:20 PM In situ study of photocatalytic strain evolution and charge transfer in a single metal nanoparticle

Speaker: Prof. Joonseok Lee (Hanyang University)

2:50 PM → 3:20 PM Invited Talk III

2:50 PM Capturing the Catalytic Cycle of Cysteine Desulfurase: Structural Snapshots of Active and Inhibited States

Speaker: Prof. Wonchull Kang (Soongsil University)

3:20 PM → 3:40 PM One-minute Pitch for poster presentations

3:40 PM → 4:10 PM Group photo & Coffee break

4:10 PM → 6:10 PM Advancing Toward a Successful SFX Experiment and Data Processing

Convener: Sang Jae Lee (PALXFEL)

4:10 PM Sample preparation to acquire microcrystals using batch mode (inc. alternative way)

4:30 PM SFX Experiment

4:50 PM Data Preprocessing

5:00 PM Data Calculation, checking statistics

5:30 PM From obtaining a structure factor file to solve a protein structure

5:40 PM Case study

5:50 PM Open discussion and feedback

4:10 PM → 6:10 PM Discussion on Imaging Science in PAL-XFEL

Conveners: Sang Han Park (XFEL), Sunam Kim (POSTECH)

4:10 PM Light‐Induced Ultrafast X-Ray Imaging via Fourier Transform Holography (FTH)

Speaker: Dr Sang Han Park (PAL)

4:35 PM Femtosecond Time Resolved Bragg Coherent Diffraction Imaging (tr-BCDI)

Speaker: Dr Sunam Kim (PAL)

5:00 PM Break

5:10 PM Time-resolved single-particle imaging at XFEL facility

Speaker: Dr Chan Kim (European-XFEL)

5:35 PM Open Discussion

4:10 PM → 6:10 PM Exploring Chemical Reaction Dynamics with PAL-XFEL : A Symposium for Young Scientists

Conveners: Jae Hyuk Lee, Sang Han Park (XFEL)

4:10 PM Polaron study via Density Functional Theory calculation.

Speaker: Dr Kwangsik Jeong (Yonsei Univ.)

4:35 PM Wavelength-Dependent Structural Dynamics of [Au(CN)2−]3 Studied by Time-Resolved X-ray Liquidography

Speaker: Dr Hosung Ki (IBS)

5:00 PM Break

5:10 PM Dynamics of Photo-excited Charge Carriers in Liquid phase α-TiO2 measured using ultrafast tr-XAS

Speaker: Abhishek Katoch (Yonsei Univ.)

5:30 PM Solvent-dependent isomer formation dynamics of iodoform investigated via X-ray liquidography at PAL-XFEL

Speaker: Yongjun Cha (KAIST)

5:50 PM Elucidating Photoinduced Dynamics of Thioketone Molecules

Speaker: Haneol Oh (KAIST)

4:10 PM → 6:10 PM Ultrafast Photo-induced Dynamics in Condensed Matter at PAL-XFEL

Conveners: Hoyoung Jang (Pohang Accelerator Laboratory), SaeHwan Chun (PAL-XFEL)

4:10 PM Frustrated phonon with charge density wave (CDW) in vanadium Kagome metal

Speaker: Seung-Phil Heo (POSTECH)

4:30 PM Nematic response of FeTe in the ultrafast dynamics

Speaker: Jihyeon Hwang (Chungbuk National Univ.)

4:50 PM Break

5:00 PM fs-THz beamline at PLS-II

Speaker: Dr Hee Jun Shin (PAL)

5:20 PM Femtosecond X-ray Scattering (FXS) at PAL-XFEL

Speaker: Dr Sae Hwan Chun (PAL)

5:35 PM Resonant soft X-ray Scattering (RSXS) at PAL-XFEL

Speaker: Dr Hoyoung Jang (PAL)

5:50 PM Open discussion and feedback

6:20 PM → 8:00 PM Banquet

Thursday, July 3

9:30 AM → 10:00 AM Invited Talk IV

9:30 AM Photochemistry of the Biologically Relevant Disulfide Molecules by Femtosecond X-ray Spectroscopy

Speaker: Prof. Tae Kyu Kim (KAIST)

10:00 AM → 10:30 AM Invited Talk V

10:00 AM Light-induced ultrafast dynamics in 2D layered system

Speaker: Prof. Dongbin Shin (GIST)

10:30 AM → 10:50 AM Coffee break

10:50 AM → 11:10 AM Student Talk I

10:50 AM Deep learning for coherent diffraction imaging using XFEL

Speaker: Sung Yun Lee (POSTECH)

11:10 AM → 11:30 AM Student Talk II

11:10 AM Tracking the Melting Dynamics of Crystalline Ice using Time-resolved X-ray Scattering at PAL-XFEL

Speaker: Kichan Park (POSTECH)

11:30 AM → 11:40 AM Coffee break

11:40 AM → 1:00 PM Poster Presentation

1:00 PM → 1:10 PM Poster Awards & Closing