The 3rd Symposium on the TOPTIER platform in Extreme Rare Isotope Science

2 Aug 2026, 12:00 → 5 Aug 2026, 20:00 Asia/Seoul

MAISON GLAD Jeju

The 3rd TOPTIER Symposium

 

We are pleased to announce that the Third TOPTIER Symposium will be held at Maison Glad Jeju in Jeju, Korea, from August 2 to 5, 2026.

 

The TOPTIER Project is a joint initiative between Korea’s RAON facility at the Institute for Rare Isotope Science (IRIS), Institute for Basic Science (IBS), and Japan’s RIKEN Radioactive Isotope Beam Factory (RIBF), with support from Korea’s Ministry of Science and ICT (MSIT). The project aims to advance rare isotope science by fostering close international collaboration and promoting the development of cutting-edge technologies for the production and study of extremely rare isotopes.

 

Building on the success of the previous symposiums, the Third TOPTIER Symposium will bring together researchers and collaborators to share recent scientific and technical progress, exchange new ideas, and discuss future directions for the TOPTIER Project. The symposium will also provide a valuable opportunity to strengthen the growing partnership between the Korean and Japanese rare isotope science communities.

 

We warmly welcome all participants to Jeju and look forward to productive discussions, new ideas, and continued collaboration as we work together to explore the frontiers of extremely rare isotope science.

 

      

 

This work was supported by the Institute for Basic Science (IBS-I001-01/IBS-R031-D1), the National Research Foundation of Korea(NRF) funded by Ministry of Science and ICT(RS-2024-00436392)

Sunday 2 August

16:00 → 18:00 Session: Registration and PI meeting

18:00 → 21:00 Reception: Reception Dinner

Monday 3 August

09:00 → 09:10 Welcome address: Welcome

09:00 Welcome Address

Speaker: T. Shin (IBS) H. Sakurai (RNC)

09:10 → 10:25 Session: RI Production

09:10 TOPTIER​ ​Subproject​ ​1​ ​(RI​ ​Production)​ ​Overview

Speaker: Taeksu Shin (IBS) Yutaka Watanabe (KEK)

09:15 TOPTIER​ ​collaboration​ ​at​ ​BigRIPS

Speaker: Sin'ichiro Michimasa (RIKEN)

09:30 Beam Production for heavy RIs: BigRIPS experiences

Speaker: Naoki Fukuda (RIKEN)

09:45 Recent​ ​Measurements​ ​with​ ​Low-Energy​ ​Radioactive​ ​Ion​ ​Beams​ ​at​ ​CRIB

Speaker: Fulong Liu (CNS)

10:05 Status of Strip-Readout PPAC for OEDO-SHARAQ Experiments

Speaker: Reiko Kojima (CNS)

10:25 → 10:50 Coffee Break

10:50 → 12:00 Session: RI Production

10:50 Update on ISOL operation

Speaker: H. Yim (IBS)

11:10 Current progress and future plan for 225-Ac study at IRIS

Speaker: Jaehong Kim (IBS)

11:30 Utilizing fusion-evaporation reaction to access proton drip-line region with ISOL beam at RAON

Speaker: Sunghan Bae (IBS)

11:50 Discussion

12:00 → 13:30 Lunch

13:30 → 15:30 Session: Spectroscopy

13:30 Overview of the ASGARD campaign at RAON in 2025

Speaker: Hiroshi Watanabe (CENS, IBS)

13:55 Latest results and future perspectives for in-beam gamma-ray spectroscopy at the RIBF

Speaker: Martha Liliana (RIKEN)

14:20 Current status of IDATEN and future perspectives

Speaker: Byul Moon (CENS, IBS)

14:45 Analysis results for Pd-94

Speaker: Youngseub Jang (Korea Univ. / IBS)

15:00 Analysis results for Ru isotopes

Speaker: Jaehwan Lee (Korea Univ. / IBS)

15:15 Probing shape coexistence in 96Zr via inelastic decay from isobaric analog resonances

Speaker: Adrian Montes Plaza (CNS)

15:30 → 15:50 Break

15:50 → 18:00 Session: Nuclear Matter

15:50 Overview

Speaker: T. Uesaka (RNC)

15:55 Systematic study of multi-neutron systems at RIBF

Speaker: Kenjiro Miki (Tohoku)

16:25 Exploring the nuclear many-body system via heavy RI beam collision experiments at RIKEN-RIBF

Speaker: TadaAki Isobe (RNC)

16:45 Toward the systematic investigation of two nucleon transfers for the study of pair condensations

Speaker: Shinsuke Ota (RCNP)

17:05 Future SAMURAI experiments using LAMPS NDA

Speaker: Siwei Huang (IBS)

17:25 Monte Carlo study for two nucleon correlation in He+p reactions

Speaker: Soo Ho Chae (KU/IBS)

17:40 Beam commissioning experiments for SUPER

Speaker: Young Jun Kim (KU/IBS)

17:55 Discussion

18:00 → 21:00 Banquet

Tuesday 4 August

09:00 → 10:30 Session: Nuclear Astrophysics

09:00 Recent Progress and Future Plans of the Korean TOPTIER Nuclear Astrophysics Working Group

Speaker: S. Tony Ahn (IBS)

09:15 Direct Measurement of the 14O(α,p)17F Reaction Relevant to Type I X-ray Bursts

Speaker: Chaeyeon Park (IBS)

09:30 A study of proton-decay branching ratios in 25Al states populated by the 27Al(p,t) transfer reaction

Speaker: Minju Kim (IBS)

09:45 Current status and future plans of AToM-X

Speaker: Soomi Cha (IBS)

10:00 Study on the compound nucleus neutron-capture reaction of 130Sn using (d,p) surrogate reaction for understanding the r-process

Speaker: Sunghan Bae (IBS)

10:15 Nuclear astrophysics research activities at RIKEN

Speaker: S. Nishimura (RNC)

10:30 → 11:00 Break

11:00 → 12:00 Session: Neutron Science

11:00 Summary Report on Project 5: Neutron Science

Speaker: Do Heon Kim (KAERI)

11:10 Overview of a Project to Improve the Accuracy of Fission Reaction Data for Minor Actinides and the Current Status of Measurements

Speaker: Atsushi Kimura (JAEA)

11:35 Neutron-Induced Nuclear Reaction Data Measurements in the TOPTIER Project

Speaker: Dal-Ho Moon (KAERI)

12:00 → 13:30 Lunch

13:30 → 14:20 Session: Neutron Science

13:30 Fundamental Physics Experiments in ANNRI Using Polarization

Speaker: Shunsuke Endo (JAEA)

13:55 Modernization and Improvement of a Fission Barrier Calculation Code

Speaker: Jonghwa Lee (KAERI)

14:20 → 15:05 Session: MMS et al.

14:20 RAON mass measurement experiment in 2026

Speaker: J. Y. Moon (IBS)

14:35 Recent nuclear mass spectrometry with the SLOWRI project

Speaker: S. Iimura (RNC)

14:50 Laser spectroscopy at KISS

Speaker: Y. Hirayama (KEK)

15:05 → 15:30 Coffee Break

15:30 → 18:00 Session: Theory

15:30 TOPTIER theory activities: status and perspective

Speaker: Masaaki Kimura (RIKEN)

15:50 Japan-Korea collaboration on nuclear density functional theory

Speaker: Nobuo Hinohara (U. of Tsukuba)

16:20 Studies in quartet BCS theory

Speaker: Yixin Guo (RIKEN)

16:40 Systematic Investigations of Scandium, Titanium, and Vanadium in Galactic Chemical Evolution

Speaker: Soonchul Choi (TOPTIER, IBS)

17:00 Investigation of produced nuclei in multinucleon transfer reactions using the Langevin approach

Speaker: Kohta Nakajima (Kindai U.)

17:20 Configuration-driven mirror energy differences in the 29Mg-29Cl pair studied with AMD

Speaker: Dae Ik Kim (Pusan Natl. Univ., IBS)

17:40 Discussion

18:00 → 20:00 Dinner

Wednesday 5 August

09:00 → 10:00 Session: Project Review and Discussion

Convener: T. Shin H. Sakurai

10:00 → 11:30 Session: Project Plan and Discussion

Convener: T. Shin H. Sakurai

11:30 → 12:00 Closing and Summary

Speaker: H. Sakai (IBS/RNC)