2nd Symposium on TOPTIER Platform in Extreme Rare Isotope Science

19 Aug 2025, 09:00 → 21 Aug 2025, 20:30 Asia/Seoul

RIKEN Wako Campus

Hiroyoshi Sakurai (RIKEN Nishina Center for Accelerator-Based Science), Taeksu Shin

Following the successful launch of the TOPTIER (TOP-Tier Platform In Extremely Rare Isotope Science) project, we are pleased to announce that the second meeting will be held at the RIKEN Nishina Center (RNC) from August 19 to 21.

The TOPTIER project, a joint effort between Korea’s RAON facility of IRIS/IBS and Japan’s RIBF of RIKEN, supported by Korea’s Ministry of Science and ICT (MSIT), is dedicated to advancing research in rare isotope science. The second meeting will further strengthen collaboration, review ongoing progress, and outline the next steps toward developing cutting-edge technologies for the generation and study of extremely rare isotopes.

We look forward to continued engagement and valuable contributions from all participants as we move forward with this important scientific initiative.

 

      

TOPTIER2025-Workshop-Banner.jpg

TOPTIER2025_Workshop-Timetable.docx

Tuesday, 19 August

12:00 → 13:30 Registration

13:30 → 14:30 Opening Session

13:30 Opening Addresses

Speaker: Hiroyoshi Sakurai and Taeksu Shin

13:45 Greetings

Speaker: Akira Henda, Hyein Kim, and Seung-Woo Hong

14:00 Overview of RIKEN and IBS

Speaker: Osamu Aruga and Shibo Sim

14:20 Photo Session

14:30 → 15:00 Break: Coffee Break

14:30 → 17:30 Parallel Session: I

14:30 RIBF Tour (Guest Event)

16:00 Administration Meeting (RIKEN/IBS)

15:00 → 17:30 Parallel Session: II

15:00 TOPTIER Subproject 1 (RI production) Overview

Speaker: Yutaka Watanabe (KEK)

15:05 Status of RI Production at RAON

Speaker: Taeksu Shin (IBS)

15:30 Development of the Apparatuses for Energy-Degraded RI Beam Experiments at OEDO

Speaker: N. Imai (CNS)

15:45 Optics Study of 5 and 15 MeV/nucleon Beams at OEDO

Speaker: Y. Yamamoto (CNS)

16:00 Development of ASAGI for SR-PPAC

Speaker: R. Tsuchiya (Rikyo University)

16:10 Coffee Break

16:30 Medical Isotopes Program at IRIS

Speaker: J.H. Kim

16:45 Recent status of the low-energy RI beam production at CRIB

Speaker: H. Yamaguchi (CNS)

17:00 RI Production at KISS - MNT Reactions and Laser Ionization

Speaker: Y. Hirayama (KEK)

18:00 → 20:00 Dinner

Wednesday, 20 August

09:30 → 12:00 Session: 2. Spectroscopy

09:30 Summary of Project 2 Activities

Speaker: Nori Aoi (CNS)

09:40 Status of the IDATEN project at RIBF and the upcoming ASGARD in-beam gamma campaign at RAON

Speaker: Hiroshi Watanabe (IBS)

10:10 Lifetime measurement of yrast-band states in 94Pd using IDATEN

Speaker: Youngseob Jang (Korea University)

10:30 Coffee Break

10:50 In-Beam Gamma-Ray Spectroscopy with DALI2(+), HiCARI, and the Path Toward HYPATIA

Speaker: Pieter Doornenbal

11:20 Status of in-beam gamma spectroscopy for the neutron-rich scandium isotopes with HiCARI campaign

Speaker: Jiseok Kim (Korea University)

11:40 Overview of decay spectroscopy at RIBF and C2URIE project

Speaker: Rin Yokoyama

12:00 → 13:45 Lunch

13:45 → 15:00 Session: 3a. Theory

13:45 A new combination of nuclear structure and reaction theories

Speaker: Kazuki Yoshida (RCNP/RIKEN)

14:10 Interdisciplinary approach to multi-body correlations

Speaker: Hiroyuki Tajima

14:35 Role of the Light Mass Nuclear Reactions in the r-process Nucleosynthesis

Speaker: Kyungil Kim (IBS)

15:00 → 15:30 Break: Coffee Break

15:30 → 18:00 Session: 4. Nuclear Matter

15:30 Current Status of the SUPER Project

Speaker: Youngjun Kim (Korea University)

15:50 Cluster knockout measurements at RIBF

Speaker: Yuki Kubota (RIKEN)

16:10 ONOKORO at RCNP

Speaker: Cheong Soo Lee (IBS)

16:30 Heavy ion collision experiment at RIBF to study the properties of high dense neutron rich matter

Speaker: Tadaaki Isobe (RIKEN)

16:50 Coffee Break

17:00 Experimental studies with the LAMPS neutron detector array at SAMURAI

Speaker: Yosuke Kondo (RIKEN)

17:20 Preparation Status of LAMPS-NDA

Speaker: Youngjin Kim (IBS)

17:40 Data Acquisition System for LAMPS-NDA

Speaker: Hyo Sang Lee (IBS)

18:00 → 20:00 Dinner

Thursday, 21 August

09:30 → 12:00 Session: 5. Nuclear Astrophysics

09:30 Overview of Project #4

Speaker: S. Nishimura (RIKEN)

09:40 From Masses to β-Decay: Experimental Constraints on the r-Process

Speaker: V.H. Phong (RIKEN)

10:10 Stellar nucleosynthesis studies with surrogate reactions

Speaker: Sunghan Bae (IBS)

10:30 Optical model potential studies at RAON

Speaker: Dahee Kim (CENS)

10:50 Coffee Break

11:10 CENS ap-explore project using active target TPCs

Speaker: Soomi Cha (CENS)

11:40 Study on the rp-process via mass measurements with MRTOF-MS

Speaker: S Kimura (KEK)

12:00 → 13:00 Lunch

13:00 → 13:15 Session: 3b. Theory

13:00 Current Status of TOPTIER Theory (KSHELL)

Speaker: Youngman Kim (IBS)

13:15 → 13:35 Session: 2b. Spectroscopy

13:15 8pi Array Project at RCNP

Speaker: E. Ideguchi (RCNP)

13:35 → 13:45 Coffee Break

13:45 → 15:15 Session: 6. Neutron Science

13:45 Status of Project 5: Neutron Science

Speaker: H. Otsu (RIKEN)

14:05 Evaluation and Status of Nuclear Data Induced by Neutron for Key Nuclides in Small MSRs

Speaker: H.I. Kim (KAERI)

14:25 Neutron Beamline NDPS at IRIS for Nulcear Science

Speaker: C.S. Lee (IRIS)

14:45 Surrogate Measurement for the Neutron-induced Reactions with OEDO Facility

Speaker: N. Imai (CNS)

15:00 Experimental Approaches for Nuclear Data Production in the TOPTIER Project

Speaker: D.H. Moon (KAERI)

15:15 → 15:30 Break: Coffee Break

15:30 → 17:00 Session: 7. Mass, Moment and Ion Trapping

15:30 Recent progress and technological upgrades for the ZD MRTOF-MS experiment at RIBF

Speaker: M Rosenbusch (RNC)

16:00 SLOWRI pre-proposal

Speaker: T Hashimoto (IBS)

16:15 MR TOF and mass measurement

Speaker: J. Y. Moon (IBS)

16:30 Laser spectroscopy at KISS

Speaker: Y Hirayama (KEK)

16:45 Coffee Break

17:00 → 18:00 Closing

18:30 → 20:30 Dinner