M. Kase
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View article: Usability of Mixed Reality for Naloxone Training: Iterative Development and Field Testing of ReviveXR
Usability of Mixed Reality for Naloxone Training: Iterative Development and Field Testing of ReviveXR Open
Background/Objectives: The increased availability of naloxone underscores the urgent need for scalable, effective training interventions. While current training modalities show promise, critical challenges persist, particularly regarding t…
View article: Method for releasing carbon foils from substrates
Method for releasing carbon foils from substrates Open
The performance of a carbon foil (C-foil) as a charge stripper in an accelerator is directly affected by its condition and quality. C-foils are fabricated by evaporating carbon onto a substrate. Therefore, a suitable technique must be esta…
View article: Development of a high-density highly oriented graphite stripper
Development of a high-density highly oriented graphite stripper Open
High-density highly oriented graphite sheets provided by Kaneka Corporation have been applied as stripper disks for heavy-ion acceleration at RIKEN RI Beam Factory since 2014. The graphite sheets withstand increasing amounts of beam intens…
View article: Current status of plasma spectroscopic experiments with Hyper-ECR ion source at CNS, University of Tokyo
Current status of plasma spectroscopic experiments with Hyper-ECR ion source at CNS, University of Tokyo Open
During operations of the Hyper-ECR ion source at the Center for Nuclear Study, University of Tokyo, an observation of plasma light intensities by a monochromator was made. Various gaseous and metal ions are produced, then extracted, and in…
View article: Acceleration of Polarized Deuteron Beams with RIBF Cyclotrons
Acceleration of Polarized Deuteron Beams with RIBF Cyclotrons Open
We have recently performed experiments with polarized deuteron beams at the Radioactive Isotope Beam Factory (RIBF). Tensor- and vector-polarized deuterons were produced using the RIKEN polarized ion source (PIS), which is an atomic-beam-t…
View article: Study on Energy Upgrade and Beam Transmission Efficiencies for RIKEN K-70 AVF Cyclotron
Study on Energy Upgrade and Beam Transmission Efficiencies for RIKEN K-70 AVF Cyclotron Open
The RIKEN K-70 AVF cyclotron has been operated since 1989 and is used as a stand-alone machine and an injector to the RI-beam factory (RIBF). It is operated only in the RF harmonics (H) equal to 2 presently, and the maximum beam energies a…
View article: Charge Stripper Ring for Cyclotron Cascade
Charge Stripper Ring for Cyclotron Cascade Open
In the multi-stage acceleration of heavy ions such as the acceleration at the RIKEN RI beam factory (RIBF), the electron stripping process with charge strippers is an inevitable process for the efficient acceleration. Typical efficiencies,…
View article: RIKEN Ring Cyclotron (RRC)
RIKEN Ring Cyclotron (RRC) Open
The RIKEN Ring Cyclotron (RRC) has been in stable operation over 28 years, and has been used for supplying many types of heavy-ion beams for various experiments. Since 2007, it has also been used for supplying beams to the three Ring Cyclo…
View article: Four-Dimension Transverse Phase-Space Distribution Measured by a Pepper-Pot Emittance Meter
Four-Dimension Transverse Phase-Space Distribution Measured by a Pepper-Pot Emittance Meter Open
Four-dimensional (4-D) transverse emittance of the highly charged heavy ion beam extracted from ECR ion source is invariant under linear 4-D symplectic operation. Thus, it is essential quantity to improve the beam quality. Measurement of t…
View article: HTc-SQUID Beam Current Monitor at the RIBF
HTc-SQUID Beam Current Monitor at the RIBF Open
A high critical temperature (HTc) superconducting quantum interference device (SQUID) beam current monitor (SQUID monitor) has been built and installed in the beam transport line in the radioactive isotope beam factory (RIBF) at RIKEN in J…
View article: Status Report on the Operation of the RIBF Ring Cyclotrons
Status Report on the Operation of the RIBF Ring Cyclotrons Open
Operational status of four ring cyclotrons (RRC, fRC, IRC, SRC) from August 2014 to July 2015 is reported. We are engaging in the improvements and adjustments for increasing beam intensities year after year, and maintenances for the stabil…
View article: Status Report of the Operation of the RIKEN AVF Cyclotron
Status Report of the Operation of the RIKEN AVF Cyclotron Open
The RIKEN AVF cyclotron was commissioned in 1989. Since then, it has been operated as an injector for the RIKEN ring cyclotron. The AVF cyclotron also provides low energy ion beams for the Radio-Isotope Beam separator (CRIB) of the Center …
View article: Heavy-Ion Beam Acceleration at RIKEN for the Super-Heavy Element Search
Heavy-Ion Beam Acceleration at RIKEN for the Super-Heavy Element Search Open
The RIKEN heavy ion linac (RILAC) is composed of a variable-frequency Wideröe linac, an 18 GHz ECR ion source, a variable-frequency folded-coaxial radio frequency quadrupole linac (FC-RFQ) as a pre-injector, and a Charge-State Multiplier s…
View article: History of Solid Disk Improvement for Rotating Charge Stripper
History of Solid Disk Improvement for Rotating Charge Stripper Open
In 2007, we installed a rotating disk stripper device at the final charge stripping section for the uranium (U) beam acceleration at RIKEN RI Beam Factory. The first rotating carbon disk (C-disk) stripper was useless because of its poor su…
View article: Development of an Online Emittance Monitor for Low Energy Heavy Ion Beams
Development of an Online Emittance Monitor for Low Energy Heavy Ion Beams Open
RIKEN's 18 GHz ECR ion source supplies the AVF cyclotron with beams ranging from protons to heavy ions as xenon. From comparison with the use of the RILAC (RIKEN Linear Accelerator) and beam transport simulations it was found that the tran…
View article: Observation of Sublimation Effect of Mg and Ti Ions at the Hyper-Electron Cyclotron Resonance Ion Source
Observation of Sublimation Effect of Mg and Ti Ions at the Hyper-Electron Cyclotron Resonance Ion Source Open
Light intensities of a grating monochromator during plasma chamber baking and 24Mg⁸⁺ and 48Ti¹³⁺ beam operation were observed at the Hyper-Electron Cyclotron Resonance ion source. During chamber baking almost all light intensities were Fe …
View article: Present Status and Future Plan of RIKEN RI Beam Factory
Present Status and Future Plan of RIKEN RI Beam Factory Open
Recent efforts concerning the accelerators of the RIKEN RI Beam Factory (RIBF) have been directed towards achieving higher heavy-ion beam intensities. As shown at the IPAC2014 conference, the intensities of these ion beams have improved si…
View article: Development of Low-Energy Heavy-Ion Beams by the RIKEN AVF Cyclotron and Hyper ECR Ion Source of CNS
Development of Low-Energy Heavy-Ion Beams by the RIKEN AVF Cyclotron and Hyper ECR Ion Source of CNS Open
The application of low-energy heavy-ion beams enhances production of radioisotope (RI) and studies of nuclear astrophysics. The Center for Nuclear Study (CNS) of the University of Tokyo and RIKEN Nishina Center have been developing the RIK…
View article: Status of Plasma Spectroscopy Method for CNS Hyper-ECR Ion Source at RIKEN
Status of Plasma Spectroscopy Method for CNS Hyper-ECR Ion Source at RIKEN Open
The optical line spectra of multi-charged gaseous and metal ion beams from ECR plasma have been observed using a grating monochromator with photomultiplier. This new method simplifies the observation of the targeted ion species in the plas…