The 1st Workshop for Future Science in Next Generation Synchrotron

25 Jun 2025, 11:00 → 27 Jun 2025, 21:00 Asia/Seoul

OSCO

Seunghwan Shin (Korean Basic Science Institute)

The 1st workshop for future science in next generation synchrotron will be held at OSCO, Ochang, Cheongju, Korea, in late June 2025. A new 4th-generation synchrotron project of Korea began in 2021, and the building construction will start this year. In the workshop, we are willing to display diverse scientific opportunities and prospects. We invited prominent researchers from leading synchrotron facilities to share and discuss new sciences expected in the next generation light source.  The invited speakers will give not only the status of each synchrotron but also the science expectations utilizing the new X-ray sources. In addition, we are going to share the current status of the beamline program in the project. We anticipate that researchers in the synchrotron community could participate and exchange various interests in this workshop.

Wednesday 25 June

11:00 Registration

Where is it

13:00 Opening Ceremony (Photo Time)

13:40 Intermission

13:50 Opening Remark (KBSI, PAL)

Session 1: Construction Projects of 4th Generation Synchrotron (Chair: Moses Chung)

Following an introductory presentation on the Korea-4GSR, an overview of HEPS, the 4th-generation synchrotron light source recently completed in China, will be presented.

Conveners: Ping He (HEPS), Seunghwan Shin (Korean Basic Science Institute)

1 Current Status and Future Plans of Korea-4GSR

Speaker: Dr Seunghwan Shin (Korean Basic Science Institute)

2 Update on HEPS Progress

The High Energy Photon Source (HEPS) is a green field 4th-generation light source. The construction of the High Energy Photon Source (HEPS) at the Chinese Academy of Sciences almost completed. The main achievement of 2025, all of the insertion devices have been installed and under the beamline commissioning. In this report, we’ll give you the information about HEPS construction progress and accelerator and beamline commissioning results.

Speaker: Dr Ping He (HEPS)

15:40 Coffee Break

Session 2: Upgrade to 4th Gen. Synchrotron and Future Science (Chair: Hyunjung Kim)

This session will feature an introduction to APS-U, which completed its upgrade to a 4th-generation synchrotron in 2024, followed by a presentation on the planned upgrade of Japan’s SPring-8-II. Subsequent presentations will highlight each facility’s beamline programs and scientific outlook.

Conveners: Jonathan C. Lang (APS), Makina Yabash (SPring8-II)

3 Advanced Photon Source Upgrade: Commissioning, Initial Science, and Future Outlook.

The upgrade of the Advanced Photon Source (APS) was recently completed reducing the natural emittance of the APS storage ring from 3000 to 42 pm. This reduction greatly increases the coherent x-ray fraction at high energies providing unique opportunities for interrogating materials at nanometer length-scales with lens-less imaging techniques or exploring the dynamics of systems orders-of-magnitude faster than was previously possible. This talk will detail the APS’s recent experience with commissioning of the new storage ring and the newly built beamlines optimized to exploit the high-energy coherence. The talk will also present some initial scientific results produced by APS beamlines over the past year, and an outlook for continued development of the APS accelerator and beamline portfolio.

Speaker: Dr Jonathan C Lang (APS-U)

4 From SPring-8 to SPring-8-II

SPring-8 was inaugurated in 1997 as a large-scale 3rd generation synchrotron radiation (SR) facility, and has served a wide range of academic and industrial users for decades. However, the demand for advanced X-ray analysis has grown significantly, far exceeding the capabilities of the current facility. Furthermore, aging and loss of competitivity have become serious concerns. To achieve both a world-leading performance and high sustainability, we planned the SPring-8-II upgrade project [1], which was recently approved by the government in December 2024.
For the SPring-8 storage ring, we adopted a five-bend achromat lattice with a reduced beam energy of 6 GeV, allowing decrease of the emittance to 110 pm.rad and increasing the beam current to 200 mA while maintaining excellent stability [2]. As unique features, newly developed short-period in-vacuum undulators (IVU-II) are used to produce brilliant high-energy X-rays even at the lower beam energy [3]. Furthermore, four 30-m long straight sections (LSSs) will accommodate dumping wigglers to further reduce the emittance down to 50 pm.rad, as well as long IVU-IIs to generate hard X-rays with the highest brilliance among the 4th generation sources. The SACLA linac is used as a As a high-performance injector, allowing stable top-up operation and drastic reduction of the power consumption [4]. The world-leading technologies of X-ray optics and detectors (such as advanced KB mirrors and CITIUS), combined with massive supercomputing infrastructures in Japan, will fully exploit the capabilities of the new source.
For SPring-8-II, almost all accelerator components will be replaced, while the building including the ring tunnel and the experimental hall will remain in continuous use. Mass production of the components started in 2025. After a one-year shutdown and successive commissioning in FY2027-28, the user operation of SPring-8-II will start in 2029.
In this presentation, I will introduce the latest status of the SPring-8-II project, and the ongoing activities to fully utilize the new capabilities.

References
[1] RIKEN-JASRI SPring-8-II Project Team, SPring-8-II Conceptual Design Report, (2014).
[2] H. Tanaka et al., J. Synchrotron Rad. 31 (2024) 1420.
[3] K. Imamura et al., J. Synchrotron Rad. 31 (2024) 1154.
[4] T. Hara et al., Phys. Rev. Accel. Beams 24 (2021) 110702.

Speaker: Dr Makina Yabash (SPring8-II)

17:40 Closing

18:30 Welcome Reception (Invitied Speakers)

Thursday 26 June

Session 3: X-ray Imaging and Spectroscopy for Applied Science (Chair : Kyung-Wan Nam)

Presentations will include high-resolution X-ray imaging experiments at the BM18 beamline of ESRF-EBS (France, EU), studies utilizing synchrotron radiation for secondary battery and energy material analysis, and cutting-edge spectroscopic techniques currently under development at APS-U (USA).

Conveners: Jongwoo Lim (Seoul Natl. Univ.), Paul Tafforeau (ESRF-EBS), Shelly Diane Kelly (APS-U)

5 multi-resolution tomography on large samples, the performances of the ESRF-EBS beamline BM18

When discussing synchrotron phase-contrast imaging, the typical sample size is on the millimetre scale, and in a few cases, centimetres. Since 2000, the ESRF has made significant efforts to continuously increase the maximum size of samples that can be imaged.
In late 2018, the ESRF shut down to install the first high-energy fourth-generation storage ring: the Extremely Brilliant Source (EBS). Alongside the new machine, a series of new beamlines was planned. Among them, the BM18 project was selected. It was designed to reach metric-scale sample sizes while maintaining micron-level resolution by exploiting phase contrast with a polychromatic beam.
Imaging large samples using propagation-based phase contrast requires a large, high-energy beam with exceptional coherence and long propagation distances. Following this logic, the BM18 beamline was built on a bending magnet port of the new EBS machine, providing the smallest possible X-ray source from the new lattice. The source is an 11 cm-long tripole wiggler with a peak field of 1.56 T. The beamline is 220 meters long, with the sample located 174 meters from the source, producing a beam of 320 × 17 mm² at the sample position. The average detected energy can be routinely tuned between 40 and 250 keV using more than a hundred of different polished filters, with specific configurations reaching up to 300 keV. The experimental hutch is 45 meters long, allowing for a maximum sample-to-detector distance of 36 meters. Thanks to the extremely small angular source size, coherence and geometric blurring are never limiting factors on BM18.
The multi-resolution strategy is implemented via a girder that can host up to nine detectors, covering pixel sizes from 0.65 µm to 120 µm. the latest generations of indirect detectors — mostly designed in-house — are a key factor in its ongoing success. Configurations can be recorded for rapid setup changes.
From 2022 to 2024, the beamline operated with a small tomograph capable of handling samples up to 30 kg, 30 cm in diameter, and 50 cm in height. Since October 2024, a large tomograph has been operational, able to accommodate samples up to 300 kg, 1.4 meters in diameter, and 2.3 meters tall — while still providing sub-micron resolution, even under maximum load.
The beamline is now fully operational. In addition to industrial activities (accounting for about 25% of the beamtime), BM18 supports a wide range of academic research. Key areas include biomedical imaging (notably the Human Organ Atlas project), cultural and natural heritage (including palaeontology), materials science, and geosciences. The BM18 team continues to develop the beamline every day, the beamline is still far from its limits !

Speaker: Dr Paul Tafforeau (ESRF-EBS)

6 Lithium-ion Battery Dynamics: From Single Particles to Cells

Lithium-ion batteries (LIBs) are at the forefront of energy storage innovation, playing a crucial role in electrification and climate change mitigation. The electrochemical performance of LIBs is governed by the intricate movement of lithium ions across multiple length scales—from atomic-scale lattice structures to microscale porous electrodes and full-cell architectures. Each electrode consists of densely packed particles, each with distinct crystallographic structures and surface properties, contributing to complex, heterogeneous lithium transport behavior.
In this talk, I will demonstrate how advanced analytical techniques provide unprecedented insights into these hierarchical, multiscale dynamics within operating batteries. By bridging nanoscale ion transport with macroscopic electrochemical responses, we reveal how these phenomena impact key performance metrics, including charge-discharge efficiency, capacity degradation, and thermal stability. Understanding these mechanisms is essential for optimizing next-generation battery materials and designs to enhance safety, longevity, and overall performance.

Speaker: Prof. Jongwoo Lim (Seoul Natl. Univ.)

7 Advancements in Spectroscopy Techniques at the APS-U Beamline S-25

The new APS-U beamline S-25 is set to revolutionize advanced spectroscopies by utilizing the APS upgrade, which provides brighter beams with reduced divergence. This enhancement will significantly improve X-ray collection capabilities through our 100mm and 300mm KB mirror systems, facilitating advanced spectroscopy and imaging. In addition to conducting X-ray absorption measurements on dilute systems, the spectroscopy group has introduced two innovative spectrometers: one dedicated to high energy resolution fluorescence detection (HERFD) and another featuring a large crystal array for simultaneous multiple-edge X-ray emission spectroscopy. The development of a new X-ray Raman Scattering microscope is underway, designed to measure low energy edges such as C, O, and N using 10 KeV X-rays for in-situ and operando studies. Furthermore, the spectroscopy group is leading efforts to integrate Bluesky/Orphyd controls with EPICS, aiming to automate processes with a user-friendly interface. These advancements and their implications will be discussed.

Speaker: Dr Shelly Diane Kelly (APS-U)

11:30 Lunch Time and Coffee Break

Session 4: X-ray Crystallography for Bio-Science (Chair : Sun-Shin Cha)

This session will introduce life science research through protein structure analysis, followed by a presentation on time-resolved structural studies conducted at ESRF-EBS (France, EU). Recent advancements and ongoing research in ambient-pressure photoelectron spectroscopy will also be discussed.

Conveners: Bongjin Mun (Gwangju Institute of Science and Technology), Daniele de Sanctis (ESRF-EBS), Hyun Kyu Song (Korea University)

8 Structural basis for the recognition of type-2 N-degron substrate by PRT1 E3 ubiquitin ligase

PROTEOLYSIS1 (PRT1), an N-recognin of Arabidopsis thaliana, has a specificity for recognizing the N-terminal aromatic hydrophobic residue (Tyr/Phe/Trp) of its substrates, subsequently degrading them through ubiquitylation. Here, I represent the complex structures of the ZZ domain of A. thaliana PRT1 (PRT1ZZ) with bulky hydrophobic N-degron peptides. Unlike other ZZ domains, the binding site of PRT1ZZ has a novel structure organized into two hydrophobic regions. The N-terminal aromatic residues of N-degron interact hydrophobically with Ile333 and Phe352 in the flexible loops, which undergo dramatic conformational change. A third N-degron residue participating in the hydrophobic network with N-recognin was also identified. Moreover, the ubiquitylation assay of PRT1 using the N-terminal tyrosine-exposed substrate BIG BROTHER showed that the tandem RING organization in PRT1 is critical for its robust activity. Therefore, the current study expands our knowledge of the structural repertoire in the N-degron pathway and provides insights into the regulation of E3 ubiquitin ligases containing tandem RING domains.

Speaker: Prof. Hyun Kyu Song (Korea University)

9 Advancing macromolecular structure determination with microsecond X-ray pulses at a 4th generation synchrotron

Serial macromolecular crystallography (SMX) has become a powerful method for resolving
the structures of biological macromolecules at room temperature (RT). Although microfocus
beamlines at third-generation synchrotrons are instrumental, their data acquisition is typically
limited to the millisecond scale due to constraints in photon flux and detector speed. The
newly developed ID29 beamline at the European Synchrotron Radiation Facility (ESRF)—a
flagship of the Extremely Brilliant Source (EBS) upgrade—was purpose-built to leverage the
capabilities of this fourth-generation source. As the first beamline dedicated to
room-temperature serial microsecond crystallography (RT-SµX) with true microsecond X-ray
pulses, ID29 features a compact, flexible diffractometer that supports rapid sample exchange
and accommodates multiple solid supports and three types of high-viscosity extruders
(HVEs). Our study highlights the critical integration of pulsed beams, the fast JungFrau4M
detector, and synchronized data acquisition systems for effective RT-SµX experiments. The
unique beam properties of the new ESRF source enable microsecond time-resolved
crystallography, yielding high-quality electron density maps from relatively few merged
frames. These advances position RT-SµX at ID29 as a model for future applications at
upcoming fourth-generation synchrotron facilities worldwide.

Speaker: Dr Daniele de Sanctis (ESRF-EBS)

14:20 Coffee Break + Reserved Time

Session 5: Soft X-ray Spectroscopy for Material Science (Chair: Ki-Jeong Kim)

The session will feature the high-resolution angle-resolved photoemission spectroscopy (ARPES) program at ALS-U (USA), an overview of dynamic studies using coherent scattering at DESY (Germany), and recent achievements in coherent scattering-based imaging techniques.

Conveners: Changyong Song (POSTECH), Eli Rotenberg (ALS-U), Wojciech Roseker (PETRA-III)

10 Recent advances in ambient pressure XPS

The emergence of ambient pressure XPS (AP-XPS) clearly put a new road map on the world of surface science. The combination of differential pumps and electrostatic lens system enables the operation of XPS measurements possible under elevated pressure condition, even at the pressure of 1 Bar and beyond. Since its first demonstration at ALS in 2001, the community of AP-XPS rapidly grew and all major synchrotron facilities around the world run AP-XPS endstations. At the same time, the application of AP-XPS has expanded to the fields of surface catalysis, environmental science, energy material researches, and beyond.
In this talk, I will discuss the latest developments in AP-XPS techniques, along with the challenges and prospects for the future. Also, I will share our recent results of ferroelectric materials using hard X-ray AP-XPS.

Speaker: Prof. Bongjin Simon Mun (GIST)

11 Eli Rotenberg (ALS-U)

Beamline 7.0.2 – MAESTRO(Nano-ARPES)

Speaker: Dr Eli Rotenberg (ALS-U)

16:00 Coffee Break

Session 6: Advanced Coherent X-ray Scattering (Chair: Seo Hyoung Chang)

Presentations on the direction of beamline construction, instrument design, and future scientific programs of the Korea-4GSR Project will be followed by expert discussions, including international speakers, to gather insight and feedback from the synchrotron science community.

12 Coherence application beamline P10 and the future upgrade to CAB

The Coherent Application Beamline P10 at PETRA III is dedicated for coherent X-ray scattering and imaging experiments. P10 with two experimental hutches offers various experimental setups specialized for X-ray photon correlation spectroscopy (XPCS), Bragg CDI and holo-tomography (HT). The new Coherent Application Beamline (CAB) is planned for future 4th generation synchrotron radiation source - PETRA IV. CAB will host state-of-art XPCS and holo-tomography experiments. Increased brightness of PETRA IV will allow CAB to investigate dynamical phenomena via XPCS in previously inaccessible regions in the space and time and offer 3D holographic tomography beyond current limitations in resolution.

Speaker: Dr Wojciech Roseker (PETRA-III)

13 Seeing Disorder through Coherence: Extreme Light on Complex Matter

The emergence of enhanced transverse coherence in X-rays has significantly expanded their applicability to structural investigations beyond well-ordered systems. When coherent X-rays scatter from disordered or random specimens, they produce characteristic speckle patterns in the diffraction images. These speckles encode rich information about structural disorder and fluctuations. By utilizing short-wavelength X-rays, finer structural features—down to the atomic scale—can be resolved through speckle analysis.
Coherent diffraction imaging (CDI) techniques, combined with advanced phase retrieval algorithms, enable the reconstruction of real-space images or charge density distributions directly from these speckle patterns, without the need for image-forming lenses. Since their initial demonstration at second-generation synchrotron sources, coherent imaging methods have undergone rapid development, now capable of resolving nanoscale structural details and capturing ultrafast dynamics on femtosecond timescales.
The arrival of fourth-generation synchrotron sources, with significantly enhanced brightness and coherence, is expected to usher in a new era of coherent X-ray science—one focused on disordered systems and far-from-equilibrium phenomena. In this talk, we will review the fundamental principles of coherent X-rays, present recent advances in coherent imaging techniques, and discuss emerging perspectives and opportunities in the study of structural disorder and ultrafast dynamics.

Speaker: Prof. Changyong Song (POSTECH)

18:30 Dinner Session

Friday 27 June

Session 7: Status of Phase-I 10 Beamline Projects (Chair: Changyong Song)

Conveners: In-Hui Hwang (Korea-4GSR Project), Jaeyong Shin (Korea-4GSR Project), Mi-Jeong Kwak (Korea-4GSR Project), Sae Hee Ryu (Korea-4GSR Project)

14 Probing Materials with Advanced X-ray Spectroscopy.

Material Science

Speaker: Dr In-Hui Hwang (Korea-4GSR Project)

15 Nanoscale Probes in the Soft X-ray Regime: nanoARPES and Soft X-ray nanoprobe

Coherent X-ray Science

Speaker: Dr Sae Hee Ryu (Korea-4GSR Project)

10:20 Break Time

16 Construction and utilization of Korea-4GSR's life science and imaging beamline.

Soft X-ray Science

Speaker: Dr Mi-Jeong Kwak (Korea-4GSR Project)

17 Design Strategies and Progress of Coherence Beamlines at Korea-4GSR for Advanced Science.

Bio-Science and Imaging

Speaker: Dr Jaeyong Shin (Korea-4GSR Project)

11:50 Closing Remark

12:00 Lunch and Coffee Break

13:30 Site Tour (for the invited attendee)

Bus Place will be announced. (Duration is set randomly. it should be revised.) and Free Discussion

Satellite Session : 방사광가속기와 산학연 혁신 역량 강화

18 다목적 방사광가속기 산·학·연 혁신 협의회 홍보

19 방사광가속기 산업체 활용 역량강화 교육

20 전문가 매칭 기업 컨설팅

21 기념촬영 및 폐회