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Dr Kenjiro Miki (Tohoku University)04/03/2026, 09:00
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Hiroyoshi Sakurai (RIKEN Nishina Center for Accelerator-Based Science)04/03/2026, 09:05Invited talk
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Yohei Shimizu (RIKEN Nishina Center)04/03/2026, 09:30Invited talk
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Dr pieter Doonenbal (Riken Nishina Center)04/03/2026, 09:50Invited talk
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Masaki Sasano (RIKEN Nishina Center)04/03/2026, 10:35Invited talk
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Nobuaki IMAI (CNS, Univ. of Tokyo)04/03/2026, 11:05Invited talk
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Dr Haozhao Liang (The University of Tokyo)04/03/2026, 13:15
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Akane Sakaue (CNS)04/03/2026, 13:20Invited talk
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Daisuke NAGAE (Department of Physics, Saitama University)04/03/2026, 13:45Invited talk
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Yoshikazu HIRAYAMA (IPNS, KEK)04/03/2026, 14:15Invited talk
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Peter Schury (KEK Wako Nuclear Science Center)04/03/2026, 14:45Invited talk
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kyo tsukada (ELPH)04/03/2026, 15:45Invited talk
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Rin Yokoyama (CNS, the University of Tokyo)04/03/2026, 16:15Invited talk
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Hidetada Baba (RIKEN)04/03/2026, 16:45Invited talk
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Dr Shinsuke Ota (RCNP, Osaka University)04/03/2026, 17:30
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Hang YU (University of Tsukuba)Poster presentation
Constructing fast and accurate surrogate models is a key ingredient for making robust predictions in many topics. We introduce a new model, the Multiparameter Eigenvalue Problem (MEP) emulator. The new method connects emulators and can make predictions directly from observables to observables. We present that the MEP emulator can be trained with data from Eigenvector Continuation (EC) and...
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Yasmin AnuarPoster presentation
The rapid neutron-capture (r-) process holds a significant amount of interest as a mode of nucleosynthesis of elements in astrophysical environments. From the standpoint of nuclear physics, ongoing efforts to understand this process includes measurements on 𝛽-delayed-neutron properties of its elements for a more accurate input into calculations in relation to its theoretical...
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Fumiya Furukawa (RCNP)Poster presentation
We are developing a Low-Pressure Vertical Drift Chamber (LP-VDC) designed for high-rate particle measurements at around 10-MeV/u kinetic energy at RCNP. Although primarily optimized for the Large Acceptance Spectrometer (LAS) at RCNP, the design concepts, specifically prioritizing high-rate capability and cost-efficiency, are highly applicable to RIBF facilities such as the SHARAQ spectrometer...
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翔 西岡 (Department of Physics, the University of Osaka)Poster presentation
We are developing a thin plastic scintillator with multiple MPPCs for high-rate and low energy particle experiments at RCNP. The ongoing project is mainly for Large Acceptance Spectrometer at RCNP, but these detector systems for high-rate experiments can be applicable to RIBF facilities.
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The main purpose of this detector system is to quantify proton-neutron pair correlation. Since the main... -
Ryosuke Shikada (Department of Physics, Kyushu University)Poster presentation
Radioactive Isotope (RI) beams play a crucial role in the study of nucleosynthesis and the study of nuclear structures in unstable nuclei far from the β-stability line. As RI beams often contain various nuclides, it is essential for beamline detectors, such as beam monitors and reaction product detectors, to be able to identify particles. Furthermore, detectors must have a high count-rate...
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Vskchintamani Sai Sisir Chandrachud Malladi (Dept. of Phys., Science Tokyo)Poster presentation
The detection of multi-neutron systems, such as tetra-neutrons ($^4n$) and hexa-neutrons ($^6n$), with sufficiently high energy resolution of about 100 keV is still challenging, while the resonance candidate of $^4n$ was observed in the previous studies[1][2]. To achieve better mass-resolution, the invariant mass method is promising compared to the missing mass method. However, with the...
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Shion Suzuki (Saitama University)Poster presentation
High-energy charged particle measurements using the scintillators are required high energy resolution. Calibration using cosmic rays covers high energy ranges that standard checking source cannot provide . However, previous research suggested that an angular distribution of cosmic rays and a position dependence of a crystal luminescence intensity lead to deviations from the Landau...
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Dr Lakmin Wickremasinghe (RCNP, The University of Osaka)Poster presentation
As a part of a K-program project in Japan, we are developing DAQ technology which can be used in the streaming readout of cosmic-ray air-shower detectors, but with ensuring it is applicable to experiments beyond cosmic-ray physics. This development is ongoing in collaboration with the SPADI Alliance in Japan, which provides a standardized, end-to-end system ranging from front-end electronics...
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Yuki Yamanouchi (Kyushu University)Poster presentation
The rapid neutron-capture process (r-process) in astrophysical environments is considered to be responsible for the synthesis of approximately half of the elements heavier than iron. Precise experimental mass data for neutron-rich nuclei along the r-process path are essential for elucidating reaction pathways and resulting elemental abundances. We plan precision mass measurements of...
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Ibuki Yasuda (Saitama University)Poster presentation
The experimental campaign at the Rare-RI Ring (R3) facility aims to determine the masses of short-lived nuclei with a precision of 10$^{-6}$ using single-ion isochronous mass spectrometry. Although time-of-flight detectors are standard, Schottky detectors provide a non-destructive alternative for frequency detection. A high-sensitivity Schottky detector installed at R-MD3 was evaluated in a...
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諒 土屋 (Rikkyo University/BigRIPS team(/CNS))Poster presentation
ASAGI, which allows adjustment of the time constant, was employed as the cathode readout ASD for the SR-PPAC, and its position resolution performance was evaluated. A 290 MeV/u 129Xe beam was used for the measurements. For comparison, a conventional ASD circuit was also tested under the same experimental conditions.
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For a beam intensity corresponding to approximately 1 Mpps, the position... -
伊原 健行 (東京科学大学理学院物理学系中村研究室)Poster presentation
Takeyuki Ihara$^A$, Takashi Nakamura$^A$, Shutaro Hanai$^A$, Satoshi Adachi$^C$,
Shunsuke Fujimura$^A$, Koki Ito$^B$, Jyunsei Iwaki$^A$, Shumpei Koyama$^B$, Kazuki Kyo$^B$, Yasuto Makimura$^A$, Vskchintamani Sai Sisir Chandrachud Malladi$^A$, Kenjiro Miki$^B$, Yuma Ohsawa$^A$, Hideaki Otsu$^D$, Yoshiteru Sato$^A$, Yuhei Shimizu$^B$, Hiroo Umetsu$^B$,$^A$Department of Physics. Institute...
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Kenta Hagihara (University of Tsukuba)Poster presentation
Nuclei are self-bound quantum many-body systems dominated by the strong interaction, for which isospin is an approximately good quantum number.
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In realistic nuclei, however, isospin symmetry is explicitly broken primarily by electromagnetic effects, most importantly the Coulomb repulsion among protons.
Quantifying how the Coulomb interaction reshapes global nuclear systematics is therefore... -
toshiya shimamura (Niigata University)Poster presentation
The point-proton radius ($r_{\mathrm{p}}$) is a key quantity used to study nuclear structures. Point-proton radius or charge radius ($r_{\mathrm{ch}}$) has been measured using the electron elastic scattering, muonic X-ray, and optical isotope shift methods. However, for nuclei far from the stability line and for certain elements, these methods are not applicable.
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An alternative approach is... -
Takumi Shoji (University of Tsukuba)Poster presentation
The island of inversion is a region in which their ground states are dominated by 2p–2h intruder configurations across a major shell gap rather than normal 0p–0h configurations. This behavior leads to the breakdown of magic numbers and plays an important role in understanding the shell evolution in neutron-rich nuclei. In particular, $^{32}$Al lies near the island of inversion and it is an...
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Hayato Kobayashi (University of Tsukuba, RIKEN Nishina Center)Poster presentation
Deducing the neutron skin thickness, defined as the difference between the neutron and proton distribution radii ($r_n$ and $r_p$), is important for understanding the equation of state of neutron matter [1]. Reaction cross section ($\sigma_R$) measurements provide an effective experimental approach for determining nuclear radii. Based on the isospin asymmetry of the nucleon-nucleon...
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航希 伊藤 (東北大学)Poster presentation
Koki Ito$^{A}$, Kenjiro Miki$^{A}$, Satoshi Adachi$^{B}$, Shunsuke Fujimura$^{D}$, Shutaro Hanai$^{D}$, Henning Heggen$^{E}$, Takeyuki Ihara$^{D}$, Junsei Iwaki$^{D}$, Shumpei Koyama$^{A}$, Kazuki Kyo$^{A}$, Takashi Nakamura$^{D}$, Yasuto Makimura$^{D}$, Vskchintamani Sai Sisir Chandrachud Malladi$^{D}$, Sergey Linev$^{E}$, Hideaki Otsu$^{C}$, Yuma Ohsawa$^{D}$, Yoshiteru Satou$^{D}$, Yuhei...
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Kazuki Kyo (Tohoku University)Poster presentation
To measure the resonance energies of $^{5,7}$H, an experiment using the $^{6,8}\mathrm{He}(p,2p)$ reaction in inverse kinematics has been planned at the RIBF SAMURAI facility.
In this experiment, it is necessary to detect Z = 1 $^{3}$H particles in an environment with a Z = 2 beam intensity exceeding 1 MHz.To satisfy this requirement, we introduced the scintillating fiber detector.
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The... -
S. Nishizawa (Saitama University)Poster presentation
At RIBF, heavy radioactive isotopes are produced via projectile fragmentation reactions using a $^{238}\mathrm{U}$ beam, including the medical alpha emitter $^{225}\mathrm{Ac}$. In this study, a 345-MeV/u $^{238}\mathrm{U}$ beam was irradiated on a Be target to produce a $^{225}\mathrm{Ac}$ beam, and its production cross-section was measured. The fragments were separated using the RI beam...
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Kota Yoshinaga (University of Tsukuba)Poster presentation
Density functionals based on density functional theory have been widely applied to nuclei over a broad mass range within self-consistent mean-field approaches. A hybrid approach combining density functionals with the shell-model framework has been developed, in which configuration mixing is explicitly incorporated. Although this approach successfully reproduces various observables of the...
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gen takayama
Interaction cross sections provide an effective probe of nuclear radius and constitute a fundamental observable in nuclear physics.
We focus on neutron-rich zirconium isotopes, an isotopic chain exhibiting pronounced structural evolution, including the rapid onset of deformation around N = 60 and the proposed semi-magic number N = 56. Charge radii, which reflect the proton distribution,...
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Miki FukutomePoster presentation
Since nuclear matter is composed of two Fermi particles, protons and neutrons, the equation of state(EOS) of nuclear matter has a term that depends on the density difference between the two, which is called the symmetry energy. From previous studies, it is known that the first-order density dependence of the symmetry energy $L$ is closely related to the thickness of the neutron skin $r_{\rm...
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Jiatai Li (Center for Nuclear Study, the University of Tokyo)Poster presentation
Search for the Island of Stability (IoS) has been one of the most attractive problems in modern nuclear physics. IoS is predicted to exist in the neutron-rich vicinity near Z = 114, N = 184. Heavy-ion fusion reaction is a promising approach to reach IoS, and it is also powerful in exploring the nuclear structure, in particular for highly excited states. Due to the neutron-rich nature of IoS,...
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Shaun Budarpur (Osaka Metropolitan University)Poster presentation
Electromagnetic breakup of weakly bound nuclei is a standard probe of halo structure at radioactive-ion beam facilities. In post-form DWBA, the reduced transition amplitude requires evaluating highly oscillatory six-dimensional integrals containing Coulomb distorted waves, for which straightforward numerical quadrature converges very slowly.
In this work, our main focus is the efficient and...
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