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RIKEN Accelerator Progress Report

RIKEN Accelerator Progress Report 2024 Vol. 58


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PREFACE
GRAVURE
FEATURE ARTICLE
The SπRIT experiment: Studying the density dependence of the symmetry energy via heavy RI collisions	S1
Ⅰ. HIGHLIGHTS OF THE YEAR
Production of new neutron-rich isotopes near the N = 60 isotones ⁹²Ge and ⁹³As by in-flight fission of a 345 MeV/nucleon²³⁸U beam Y. Shimizu, T. Kubo et al.	S7
Discovery of neutron-rich silicon isotopes ^45,46Si M. Yoshimoto et al.	S9
Spectroscopy of ⁵²K M. Enciu et al.	S10
Inelastic excitation of ⁹⁸Pb, ¹⁰⁰Cd, ¹⁰²Sn P. André and A. Corsi et al.	S11
In-beam γ-ray spectroscopy of ¹⁰⁰Sn X. Liu et al.	S12
Magicity versus superfluidity around ²⁸O viewed from the study of ³⁰F J. Kahlbow et al.	S13
First reach of ¹⁰⁰Sn high-precision mass measurements M. Rosenbusch et al.	S14
Candidate for the double Gamow-Teller giant resonance studied by ⁴⁸Ca(¹²C,¹²Be(0⁺₂)) reaction at RIBF A. Sakaue et al.	S15
Precise spectroscopy of the 3n and 3p systems via the ³H(t, ³He)3n and ³He(³He, t)3p reactions at intermediate energies K. Miki et al.	S16
Twist analysis of the spin-orbit correlation in QCD Y. Hatta and J. Schoenleber	S17
Uncovering the mechanism of chiral three-nucleon force in driving spin-orbit splitting T. Fukui et al.	S18
Impact of the molecular resonances on the ¹²C+¹² C fusion reaction rate Y. Taniguchi and M. Kimura	S19
¹⁶⁴Pb: A possible heaviest N = Z doubly magic nucleus T. Naito et al.	S20
Investigation of finite transverse single-spin asymmetry for very forward neutral pion and neutron production in diffractive and non diffractive processes S. Lee et al.	S21
Production cross-sections of light and charmed mesons in e⁺e⁻annihilation near 10.58 GeV R. Seidl	S22
A novel model simulation for the parton energy loss in QGP T. Kumaoka	S23
Key ionic reactions affecting stratospheric O₃ and HNO₃ changes caused by the Halloween solar proton event S. Hirasedo et al.	S24
Commissioning of the RI production line for the mass production of astatine-211 using SRILAC T. Nishi et al.	S25
In-beam commissioning of the NEBULA-Plus neutron array N. L. Achouri et al.	S26
A low-cost power supply for silicon photomultipliers P. Schury et al.	S27
Improvement of the Rare-RI Ring beam transport using vertical steering magnets A. Yano et al.	S28
Performance of a precise isochronous magnetic field over a wide momentum range in the Rare-RI Ring Y. Abe et al.	S29
Development of laser system for magneto-optical trapping of francium atoms K. Nakamura et al.名	S30
Laser spectroscopy of triply charged ²²⁹Th isomer for a nuclear clock A. Yamaguchi et al.	S31
Controlling ²²⁹Th isomeric state population in a VUV transparent crystal T. Hiraki et al.名	S33
Universal 3D-printed device for the separation of radio isotope and target metal S. Ohira et al.	S34
Production of ⁴⁵Ti radioisotope by proton irradiation of natural scandium F. Ditrói, S. Takács, and H. Haba et al.	S35
Production cross sections of ^189gIr in α-particle-induced reactions on ^natRe G. Damdinsuren et al.	S37
Genomic distribution of essential genes influences deletion mutation inheritance in Arabidopsis thaliana K. Ishii et al.	S39
Ⅱ. RESEARCH ACTIVITIES I (Nuclear, Particle and Astro-Physics)
1. Nuclear Physics
RI beam production at BigRIPS in 2024 S. Michimasa et al.	1
Measurement of cross-sections and momentum distributions of isotopes produced from ¹⁸O beam H. Takeda et al.	3
Determination of half-life of 89Rh by measuring in-flight decay H. Suzuki et al.	4
Search for short-range correlation in neutron-rich systems H. Wang et al.	5
Multi-neutron ⁴n and ⁶n states in extremely neutron-rich nuclei beyond the neutron drip line T. Nakamura et al.	7
Constraining the EoS with heavy ion collisions and the SπRIT time projection chamber W. Lynch et al.	9
Triton decay channels from the ¹¹Li(p,n)¹¹Be reaction M. Sasano and L. Stuhl et al.	10
Strong nuclear collectivity in the drip-line nucleus ¹¹Li L. Stuhl et al.	12
Beta decay study of ^156,157Pr nuclei M. Khandelwal et al.	13
Shell evolution beyond ²⁰⁸Pb: Isomer and β-decay spectroscopy of neutron-rich N > 126 nuclei A. I. Morales and V. H. Phong et al.	14
New fast-timing measurement system at RIBF, IDATEN B. Moon et al.	15
Status of mass measurements with CRISMASS@F11 in FY2024 H. Ishiyama et al.	16
Mass measurements beyond ¹³²Sn using the ZD MRTOF-MS V. H. Phong et al.	17
High-precision mass measurements of proton-rich lanthanum and cerium isotopes with the ZD MRTOF-MS S. Iimura et al.	18
High-precision mass measurements of ground and isomeric states of ⁹⁷Cd and ⁹⁹In using ZD MRTOF-MS W. Xian and M. Rosenbusch et al.	19
Mass measurements of neutron-sabbb N = Z nuclei with ZD-MRTOF-MS system D. Hou and M. Wada et al.	20
Mass measurements of proton-rich nuclei in the vicinity of ⁸⁴Mo S. Kimura et al.	21
High-accuracy mass measurements of neutron-rich argon isotopes and their impacts on the understanding of N = 32 subshell closure C. Y. Fu and M. Wada et al.	22
Observation of ²⁵⁶Db by MRTOF-MS P. Schury et al.	23
Confirmation of the order of states in ¹⁰⁰Nb S. Kimura et al.	24
RIBF experimental program in TRIP project 2024 H. Baba et al.	26
Measurement of proton elastic scattering of ⁴⁴Ti in the TRIP-MESA project S.Takeshige et al.	27
Measurement of proton elastic scattering from ⁵⁰Ca with a new telescope DELTA T. Nakada et al.	28
Proton elastic scattering with ⁸⁶Kr beam at 66 MeV/nucleon S. Koyama et al.	29
Measurement of proton elastic scattering from ¹³⁶Xe at 200 and 300 MeV/nucleon T. Yano et al.	30
Measurements of charge-changing and reaction cross sections of neutron-rich Ca isotopes R. Kanungo et al.	31
Nuclear structure studies around ¹³²Sn through nuclear moment measurements of isomeric states G. Georgiev et al.	32
Nuclear structure studies through nuclear moment measurements on short-lived isomeric state with TDPAC technique S. Go et al.	33
Novel technique of the surrogate reaction for neutron captur rate with OEDO and SHARAQ N. Imai et al.	34
Single-particle states in fp-shell nuclei through the ⁵⁰Ca(d, p)⁵¹Ca transfer reaction C. Ferrera and K. Wimmer et al.	35
Measurement of deuteron beam polarization at RIKEN RIBF H. Sugahara et al.	36
Numerical study of space-charge effects and performance evaluation of Coulomb-scaling factors H. Matsubara et al.	37
Fluorescence observation of Rb atoms in He II during dynamic Stokes shift at several wavelengths T. Sensui et al.	38
Examination of supernova nucleosynthesis with CRIB: measurement of the ¹³N(α, p)¹⁶O reaction A. Psaltis et al.	39
A study of ⁶He + p reaction: elastic scattering and neutron transfer reactions Q. Zhang et al.	40
Development of large-volume argon gas cell at KISS Y. X. Watanabe et al.	42
Mass measurement by using newly developed doughnut-shaped helium gas cell at KISS Y. Hirayama et al.	43
Production cross sections of ¹⁶N isomer with ⁹Be target + ¹⁸O beam at 230 and 350 MeV/nucleon R. Yoshida et al.	44
2. Nuclear Physics (Theory)
Uncovering the sign of nuclear deformations: Determination of prolate or oblate shape via low-energy α inelastic scattering S. Watanabe et al.	45
Investigation of the determination of nuclear deformation using high-energy heavy-ion scattering S. Watanabe et al.	46
Deformation effect in Borromean nucleus ¹⁹B M. Yamagami	47
Spin entanglement of two protons emitted from ⁶Be T. Oishi	48
Is the solution to the ATDHF equation unique? K. Sato	49
Magnetic dipole excitations in magic nuclei with subtracted second random-phase approximation M. J. Yang et al.	50
Exploring two-neutron halos in N = 28 isotones ⁴⁰Mg and ³⁹Na J. Singh and J. Casal et al.	51
Gamow-Teller strength distributions of ¹⁸O and well-deformed nuclei ²⁴Mg and ²⁶Mg by deformed QRPA E. Ha et al.	52
3. Nuclear Data
Production cross-section measurements of ²²⁵Ac produced via projectile fragmentation of ²³⁸U beam at 345 MeV/nucleon S. Nishizawa et al.	53
Consideration of the production method for Auger electron emitter ⁷⁷Br using the CCONE-based calculation system S. Sakai et al.	54
Development of a CCONE-based calculation system contributing to the consideration of nuclide production methods S. Sakai et al.	55
EXFOR compilation of RIBF data in 2024 S. Watanabe et al.	56
4. Hadron Physics
Development of concepts of streaming DAQ and computing for ePIC T. Gunji for the EIC-Japan Group	57
Development of ePIC zero-degree calorimeter Y. Goto et al.	58
Measurement of J/ψ and ψ(2S) production in p + p and p + d interactions at 120 GeV K. Nakano et al.	59
Status of Hypertriton lifetime measurement at J-PARC T. Hashimoto et al.	60
First transversely polarized proton + proton collision in the sPHENIX experiment at RHIC I. Nakagawa et al.	61
Transversely polarized proton-proton collision measurements at a center of mass energy of 200 GeV with sPHENIX G. Nukazuka et al.	62
Data readout of the intermediate silicon tracker M. Kano et al.	63
Development of streaming readout for sPHENIX-INTT detector T. Hachiya et al.	64
Track-seed reconstruction for sPHENIX-INTT H. Tsujibata et al.	65
Study of threshold for noise rejection of detector at sPHENIX N. Morimoto et al.	66
Cosmic track reconstruction toward alignment for the INTT W. C. Tang et al.	67
Z-vertex determination by the sPHENIX INTT detector in p + p M. Ikemoto et al.	68
Vertex reconstruction by the sPHENIX INTT in field-off data C. W. Shih et al.	70
Reaction plane determination INTT at sPHENIX M. Fujiwara et al.	71
Effect of radiation exposure on MIP peak position during the 2024 p + p running of sPHENIX-INTT Y. Ishigaki et al.	72
Measurement of long-range two-particle correlations in pp collisions at √s = 200 GeV with RHIC-sPHENIX Y. Sekiguchi	73
MIP analysis of Si-sensor by electron beam for ALICE-FoCal M.Takamura et al.	74
sPHENIX silicon tracker alignment J. Bertaux et al.	75
Performance evaluation of electron tracking using INTT and a calorimeter for the sPHENIX experiment T. Kumaoka et al.	76
Commissioning of intermediate silicon tracker at sPHENIX with transversely polarized proton-proton collisions at √s = 200 GeV G. Nukazuka et al.	77
Measurement of the luminosity and cross-section of the minimum-bias detector in RHIC-sPHENIX Au-Au run T. Kikuchi et al.	78
Au + Au commissioning of RHIC-sPHENIX in Run2024 A. Enokizono et al.	79
Detection efficiency of the hit cluster in the sPHENIX-INTT detector R. Shishikura et al.	80
Beam background analysis with the sPHENIX-INTT detector T. Kato et al.	81
Commissioning of the Local Polarimeter with forward neutron production in transversely polarized p^↑+ p collisions at sPHENIX J. Hwang	82
5. Hadron Physics (Theory)
6. Particle Physics
Algebra of the QST model Y. Akiba	83
7. Astrophysics and Astro-Glaciology
MAXI observations of the clusters of galaxies Y. Taki et al.	85
MAXI observation of X-rays reflected from the Moon S. Sugawara et al.	87
Geant4 simulation of Lunar-RICheS for human lunar exploration R. Nakamura et al.	89
Simulation of the impact of the Halloween event on chemical species in the stratosphere using a chemistry-climate model H. Akiyoshi et al.	90
Confirming terrestrial ice-core and tree-ring records as solar proxies through pink noise analysis M. Morikawa and Y. Motizuki	92
8. Accelerator
Development of carbon-isotope beams with solid target at CRIB H. Yamaguchi et al.	93
Status of RIKEN 28 GHz SC-ECRIS towards the production of intense uranium ion beams G. Q. Saquilayan et al.	94
Lead-ion beam production using high temperature oven of RIKEN 28-GHz superconducting electron resonance ion source T. Nagatomo et al.	96
Introducing EtherNet/IP to the RIBF control system: Development and operational use A. Uchiyama et al.	97
Development of a machine protection beam interlock system for the RIBF M. Komiyama et al.	98
Application of electrostatic pickups for beam current monitoring using double-integration technique at RIBF R. Koyama et al.	100
Deployment of digital LLRF in the RRC K. Yamada et al.	101
Construction of a Faraday cup for high intensity beams from the SRC K. Yamada et al.	102
Development of a system for monitoring electromagnet current fluctuations K. Kumagai et al.	103
Development of a vacuum control system with a fast closing valve for the radioisotope production beamline T. Watanabe et al.	105
Status of vacuum pumping systems in accelerator facilities Y. Watanabe et al.	106
Electric power consumption of RIKEN Nishina Center in 2024 M. Kidera et al.	107
9. Instrumentation
Inspection of exit-beam dump for BigRIPS Y. Togano et al.	109
Position measurement of rotating Be target for BigRIPS M. Yoshimoto et al.	110
Beam emittance analysis of primary beams using profile monitors in the beam transport line from SRC to BigRIPS N. Fukuda et al.	111
Diamond recoil particle telescope for primary-beam current measurements at BigRIPS N. Fukuda et al.	112
New gas handling system for parallel plate avalanche counter H. Sato et al.	113
Depth position measurement ability of SGT’s planar strip Ge detector S. Motomura et al.	114
Enhancing the efficiency of nuclear equipment adjustments: Statistical techniques for minimal datasets Y. Ono and Y. Kubota	116
Response of GAGG detectors with SiPM readout to high-energy gamma rays W. Marshall et al.	117
Characterization of a HR-GAGG(Ce) crystal coupled to an avalanche photodiode for HYPATIA project S. G. Posada et al.	118
Improved energy resolution for HYPATIA using multiplicity-based Doppler correction J. S. Cachaya et al.	119
New liquid hydrogen target for in-beam γ-ray spectroscopy X. Liu et al.	120
Continuous wave nuclear magnetic resonance with a vector network analyzer for the polarization monitoring of room-temperature polarized solid proton target D. Takahashi et al.	121
Proposal of isober-separation system using betatron resonance in a multi-frequency RFQ (MRFQ) M. Wakasugi et al.	122
Prototype development of a multi-radio-frequency quadrupole (MRFQ) mass filter H. Kobayashi et al.	123
Analytical method for betatron tune in multi-frequency RFQ Y. Saito and M. Wakasugi	124
Evaluation of residual radiation from the production target at ERIS T. Ohnishi et al.	125
Effects of electron beam conditions on the SCRIT ion-trapping properties R. Ogawara et al.	126
Evaluation of average kinetic energy of ¹³²Xe ions trapped in SCRIT Y. Kikuchi et al.	127
Design of higher order mode damped cavity for electron-beam stabilization in SR2 Y. Maeda and M. Wakasugi	128
Development of position detector for luminosity monitor in the SCRIT electron scattering facility M. Tachibana et al.	129
Development of R3-related equipment with ¹²⁴Xe beam Y. Yamaguchi et al.	130
A compact Schottky cavity detector at the Rare-RI Ring T. Yamaguchi et al.	131
Installation and offline tests of a position-sensitive Schottky cavity doublet G. Hudson-Chang et al.	132
Isochronous mass spectrometry at the RIKEN Rare-RI Ring facility D. Nagae et al.	133
Possibility of ∼2 particle nA neutron-rich Xe, Kr beams for exploring the island of stability M. Wada	134
Development of multireflection time-of-flight for PALIS T. Sonoda et al.	135
Beam Hit position dependence of the pulse height of a thin plastic scintillation counter with heavy ion beam M. Kurata-Nishimura et al.	136
Performance testing of a photomultiplier tube in a beam diagnostic vacuum chamber for laser spectroscopy of unstable Rb atoms in superfluid helium M. Mochizuki et al.	137
Improving energy resolution in an α-TOF detector P. Schury et al.	139
Neural network approaches to track reconstruction in drift chambers Y. Ichinohe and H. Baba	140
Semi-automated analysis tool for survey system using photogrammetry R. Murayama et al.	141
Database for shared and automated photogrammetry survey analysis R. Murayama et al.	142
Development of a gas target for the spectroscopy of pionic atoms in inverse kinematic reactions S. Nakahara et al.	144
Status of the J-PARC E16 experiment in 2024 S. Yokkaichi	146
DAQ upgrade of the J-PARC E16 experiment in 2023–2024 S. Nagafusa	147
Heavy-ion irradiation on a SiC-based semiconductor detector N. Kitamura et al.	148
CCJ operations in 2024 S. Yokkaichi et al.	149
Ⅲ. RESEARCH ACTIVITIES II (Material Science and Biology)
1. Atomic and Solid State Physics (Ion)
Improvement of single-event burnout tolerance in SiC power devices M. Takahashi et al.	151
Laser spectroscopic spin-polarizations of silver atoms in superfluid helium using a single-frequency DPSS laser S. Takahashi et al.	153
Magnetic field calibration system for measuring hyperfine splitting of ^{85, 87}Rb atoms in superfluid helium S. Sasamori et al.	155
Microwave system for atomic beam resonance method T. Kato et al.	156
Ejection test using an oscillating electric field from an RF ion-trap toward the generation of a slow RI atomic beam Y. Fukuzawa et al.	157
RIKEN ion-beam irradiation platform with glass capillary optics as a member of the Japanese microbeam facility network T. Ikeda	158
2. Atomic and Solid State Physics (Muon)
Investigation of successive magnetic transition in Sm₂Ru₂O₇ via muon spin relaxation (μSR) M. A. Syakuur et al.	159
Hole concentration dependence of spin fluctuations enhanced by Fe impurity in overdoped/heavily overdoped Bi-2201 cuprates Y. Komiyama et al.	161
3. Radiochemistry and Nuclear Chemistry
Online solid-liquid extraction experiments of ²⁵⁵No in the Sr resin/HDEDTP system R. Wang et al.	163
Solvent extraction of ¹⁸¹W with tri-n-octylamine in HF/HNO₃ system towards the chemistry of Sg S. Mitra, A. Nambu, and H. Haba	165
Anion exchange experiments of tungsten for liquid phase chemistry of seaborgium (Sg, element 106) T. K. Sato et al.	167
Distribution ratio prediction of group 4 elements using machine learning, toward chemical study of element 104, rutherfordium K. Shibamoto et al.	168
Solid-liquid extraction of ⁸⁵Sr and ¹³³Ba with DGA-resin towards the chemical study of element 102, nobelium E. Khult et al.	169
Doping a CaF₂ crystal with ²²⁹Pa and the γ-ray measurement of ^229mTh Y. Shigekawa et al.	171
Sputtering of yttrium on the ²²⁵Ac source for the magneto-optical trap of ²²¹Fr T. Nakashita et al.	173
Solvent extraction of astatine with DIPE and attempt to identify the extracted species by thin layer chromatography T. Taniguchi et al.	175
Production and chemical separation of ¹⁹⁵Au Y. Shigekawa et al.	177
Production of ¹⁵⁵Tb via an α-particle induced reaction on ¹⁵³Eu Y. Shigekawa et al.	179
Development of a new type ¹⁰³Pd/^103mRh generator T. Ohya et al.	181
Production of non-carrier added ⁷Be via the ^natLi(d, x)⁷Be reaction A. Nambu et al.	182
Construction of the gas cell and isotope separation system with resonant laser ionization for astatine-211 production T. Sonoda et al.	183
Observation of At-211 accumulated cells using a real-time alpha-particle imaging system M. Yoshino et al.	184
First investigation of energy transfer in quantum dots with ²¹¹At K. Shimazoe et al.	186
Determination of ²¹¹At activity using liquid scintillation counting Y. Soeta et al.	187
Characterization of ¹⁹⁵Au and ¹⁵⁵Tb for photon-pair radiotheranostics K. Shimazoe et al.	188
Analysis of Mg ion transport by AtMRS2-1 in Arabidopsis thaliana using Mg-28 K. Tanoi and N. I. Kobayashi	189
An ²¹¹At-labeled alpha-melanocyte stimulating hormone peptide analog for targeted alpha therapy of metastatic melanoma H. Suzuki et al.	190
Comparison of linker length in compounds for nuclear medicine targeting Fibroblast activation protein as molecular target K. Hisada et al.	192
Development of LAT1-selective nuclear medicine therapeutics using astatine-211 K. Kaneda-Nakashima et al.	194
At-211 labeling of a somatostatin analog TATE via closo-decaborate for targeted alpha antitumor therapy S. Warashina et al.	196
Preparation for RNA-sequencing of ²¹¹At-MABG treated neuroblastoma cell lines T. Sakashita et al.	197
Development of ⁶⁷Cu-labeled somatostatin derivatives to optimize nuclear medicine therapy Y. Fujisawa et al.	198
Activation cross sections of α-particle-induced reactions on scandium in the energy range of 22–51 MeV M. Aikawa et al.	200
Production cross sections of ⁴⁸V via α-particle-induced reactions on scandium below 29 MeV E. Sakamoto et al.	202
Activation cross sections of ⁷Li-induced reactions on ^natTi: Implications for monitor reactions M. Aikawa et al.	204
Activation cross sections of ⁷Li-induced reactions on ^natNi M. Aikawa et al.	206
Excitation functions of α-particle-induced reactions on ^natCr up to 50 MeV N. Ukon et al.	208
Activation cross sections of α-particle-induced reactions on ^natCu and ^natTi S. Nikaido et al.	210
Activation cross sections of ⁷Li-induced reactions on ^natCu for monitor reactions M. Aikawa et al.	212
Production cross-section of ¹⁰⁹Cd via alpha-particle-induced reaction on natural silver up to 50 MeV Ts. Zolbadral et al.	213
Production cross-section of the ^natSn(α, x)¹¹⁸Te reaction up to 50 MeV Ts. Zolbadral et al.	215
Isomer production studied with simultaneous decay curve analysis for alpha-particle induced reactions on natural platinum up to 29 MeV N. Otuka et al.	216
Synthesis of Np isotopes via the ²³²Th + ⁷Li nuclear reaction A. Nakajima et al.	217
4. Radiation Chemistry and Biology
Effect of heavy-ion irradiation on survival rate of Synechocystis sp. PCC 6803 M. Ishida et al.	219
Effects of heavy-ion beam irradiation on the survival and morphology of Cyanidioschyzon merolae T. Kodama et al.	221
Effect of heavy-ion irradiation on survival of Medakamo hakoo Y. Okabe et al.	222
LET effect of Ar-ion irradiation on the flowering rate of Arabidopsis thaliana S. Ohbu et al.	223
Effects of heavy-ion beam and X-ray irradiation on flowering rate in Arabidopsis thaliana S. Ohbu et al.	224
Isolating morning glory mutants using carbon-ion irradiation Y. Shirakawa and T. Abe	225
Distinctive development of embryo and endosperm caused by male gametes irradiated with carbon-ion beam T. Hirano et al.	226
Mutation breeding of cineraria using heavy-ion irradiation S. Ochiai et al.	227
The effect of accessory bud size on initial growth of taro accessory bud irradiated with heavy ion beams in Colocasia esculenta ‘Ehimenoushi V2 gou’ M. Okamoto et al.	229
Isolating mutant red algae Agardhiella subulata using C-ion-beam irradiation K. Tsuneizumi et al.	230
The localization of repair proteins for alternative non-homologous end joining and single strand annealing after stepwise fractionation M. Izumi and T. Abe	231
Ⅳ. OPERATION RECORDS
Program advisory committee meetings for nuclear physics and for materials and life experiments K. Yoneda et al.	233
RILAC operation K. Kaneko et al.	234
Operation report on the RIKEN AVF cyclotron for 2024 J. Shibata et al.	235
Operation report on ring cyclotrons in the RIBF accelerator complex M. Nishida et al.	237
Present status of liquid-helium supply and recovery system T. Dantsuka et al.	238
Operation of the BigRIPS cryogenic plant K. Kusaka et al.	239
Operation of Pelletron tandem accelerator T. Ikeda et al.	241
Radiation safety management at RIBF K. Tanaka et al.	243
Fee-based activities performed by Nuclear Chemistry Group A. Nambu et al.	246
Ⅴ. EVENTS
Nishina School 2024 H. Ishiyama et al.	247
RBRC workshop on Generalized Parton Distributions for nucleon tomography in the EIC era Y. Hatta et al.	248
RIKEN open day 2024 Y. Miyake and O. Kamigaito	249
MNT2024—Exploring the heavy exotic neutron-rich nuclides via multinucleon transfer reactions H. Ishiyama et al.	250
International workshop on “Low-Energy Electron Scattering for Nucleon and Exotic Nuclei” T. Ohnishi et al.	251
Ask scientists “What is nihonium!?”—Public lecture on the 20th anniversary of the birth of nihonium H. Haba et al.	252
The 2nd workshop on signal processing and data acquisition infrastructure H. Baba et al.	253
Workshop “Low-energy heavy-ion reactions and science of superheavy elements” Y. Watanabe et al.	254
Advancing physics at next RIBF (ADRIB24) D. Suzuki et al.	255
The 36th symposium on tandem accelerators and related technologies T. Ikeda et al.	256
International technical safety forum 2024 K. Tanaka et al.	257
The 12th international conference on hard and electromagnetic probes of high-energy nuclear collisions I. Nakagawa et al.	258
The 16th sPHENIX collaboration meeting I. Nakagawa	259
Report on the workshop “Advances and applications of intermediate-energy hadron-nucleus scattering” M. Kimura et al.	260
Recent progress in many-body theories (RPMBT22): Conference report M. Kimura et al.	261
Report on the conference titled “Time-evolution dynamics of nuclear reactions” H. Otsu et al.	262
Ⅵ. ORGANIZATION AND ACTIVITIES OF RIKEN NISHINA CENTER (Activities, Members, Publications & Presentations)
Organization
1. Organization Chart	263
2. Finances	264
3. Staffing	265
4. Research publication	266
5. Management	267
6. International Collaboration (as of March 31, 2024)	271
7. Awards	273
8. RIKEN Awards	275
9. Brief overview of the RI Beam Factory	276
Center Director	277
Laboratories
Research Facility Development Division
Accelerator Group	279
Accelerator R&D Team	280
Ion Source Team	282
RILAC Team	284
Cyclotron Team	286
Beam Dynamics & Diagnostics Team	288
Cryogenic Technology Team	290
Infrastructure Management Team	291
Research Instruments Group	292
Automated Operation Technology Team	293
BigRIPS Team	294
SAMURAI Team	298
Data System Team	300
Detector Team	302
Instrumentation Development Group	304
Nuclear Science Research Division
Radioactive Isotope Physics Group	309
Nuclear Dynamics Research Group	317
Nuclear Structure Research Group	324
SLOWRI Team	331
Superheavy Element Research Group	334
Superheavy Element Device Development Team	338
Few-body Systems in Physics Laboratory	340
Cosmic Radiation Laboratory	345
Astro-Glaciology Laboratory	357
Nuclear Many-body Theory Laboratory	360
RHIC Physics Research Laboratory	365
Three-Body Nuclear Force Laboratory	370
Meson RIKEN ECL Research Team	372
Accelerator Applications Research Division
Nuclear Transmutation Data Group	375
Slow RI Data Team	378
Nuclear Transmutation Technology Group	380
High-Gradient Cavity R&D Team	381
Ion Beam Breeding Group	382
Nuclear Chemistry Group	386
Industrial Application Research Team	394
Safety Management Group	395
User Liaison Group	397
RIBF User Liaison Team	398
Office of the Center Director	399
RIKEN BNL Research Center	402
Theory Group	403
Experimental Group	407
Computing Group	412
Partner Institutions	415
Center for Nuclear Study, Graduate School of Science, The University of Tokyo	416
Wako Nuclear Science Center, IPNS (Institute for Particle and Nuclear Studies), KEK (High Energy Accelerator Research Organization)	425
Ⅶ. APPENDICES
Symposia, Workshops & Seminars	429
Events	437
Press Releases & News	438
Preprints	440

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