H. Imao
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View article: Design of N<sub>2</sub> + He two-stage stripper for CSR1
Design of N<sub>2</sub> + He two-stage stripper for CSR1 Open
Charge stripper ring 1 (CSR1) is a circumferential ring with a stripper installed inside to improve the charge conversion efficiency, which is considered to be constructed as a future project. A two-stage stripper combing N 2 and He is bei…
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: Uranium Beam Interaction with Materials in Charge Stripper and Target
Uranium Beam Interaction with Materials in Charge Stripper and Target Open
The Radioactive Isotope Beam Factory (RIBF) is a cyclotron-based accelerator facility that is used for nuclear science studies.The RIBF can produce the most intense RI beams using fragmentation or fission of high-speed heavy ion beams.Char…
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: Recent Progress in RIKEN RI Beam Factory
Recent Progress in RIKEN RI Beam Factory Open
Recent efforts at the RIKEN RI Beam Factory (RIBF) are aimed at increasing the beam intensity for very heavy ions such as xenon and uranium. This paper presents upgrade programs carried out over the past few years, including modifications …
View article: Commissioning of the Beam Energy Position Monitor System for the Superconducting RIKEN Heavy-ion Linac
Commissioning of the Beam Energy Position Monitor System for the Superconducting RIKEN Heavy-ion Linac Open
The beam commissioning for the RIKEN Heavy-ion Linac (RILAC) upgrade, including the new Superconducting Linac (SRILAC) has been successfully completed. These RILAC upgrade aims at promoting super-heavy element searches and the radioactive …
View article: Present status of and recent developments at RIKEN RI beam factory
Present status of and recent developments at RIKEN RI beam factory Open
The Radioactive Isotope Beam Factory (RIBF) is a cyclotron-based accelerator facility that is used for nuclear science studies and was completed at the end of 2006. RIBF can produce the most intense RI beams using fragmentation or fission …
View article: Development of Superconducting Quarter-Wave Resonator and Cryomodule for Low-Beta Ion Accelerators at RIKEN Radioactive Isotope Beam Factory
Development of Superconducting Quarter-Wave Resonator and Cryomodule for Low-Beta Ion Accelerators at RIKEN Radioactive Isotope Beam Factory Open
A prototype cryomodule with a superconducting quarter- wave resonator (SC QWR) has been developed at RIKEN Radioactive Isotope Beam Factory (RIBF). During the last SRF conference, we presented the performance of our first SC QWR and the fi…
View article: Non-Evaporative Getter-Based Differential Pumping System for SRILAC at RIBF
Non-Evaporative Getter-Based Differential Pumping System for SRILAC at RIBF Open
Upgrades of the RIKEN heavy-ion linac (RILAC) involving a new superconducting linac (SRILAC) are undergoing to promote super-heavy element searches at the RIKEN radioactive isotope beam factory (RIBF). Stable ultra-high vacuum (10⁻⁸ Pa) an…
View article: Calibration for Beam Energy Position Monitor System for Riken Superconducting Acceleration Cavity
Calibration for Beam Energy Position Monitor System for Riken Superconducting Acceleration Cavity Open
Upgrades for the RIKEN Heavy-ion Linac (RILAC) involving a new Superconducting Linac (SRILAC) are currently underway to promote super-heavy element searches and Radio Isotope (RI) production (211At) for medical use at the RIKEN radioactive…
View article: Construction of Superconducting Linac Booster for Heavy-Ion Linac at RIKEN Nishina Center
Construction of Superconducting Linac Booster for Heavy-Ion Linac at RIKEN Nishina Center Open
At RIKEN Nishina Center, the RIKEN Heavy-Ion Linac (RILAC) is undergoing an upgrade of its acceleration voltage in order to allow it further investigation of new super-heavy elements. In this project, a new superconducting (SC) booster lin…
View article: Present Status of and Recent Developments at RIKEN RI Beam Factory
Present Status of and Recent Developments at RIKEN RI Beam Factory Open
Present status and recent developments of RIKEN RI Beam Factory will be presented.
View article: Development of Gas Stripper at RIBF
Development of Gas Stripper at RIBF Open
Charge strippers are almost inevitable for accelerations in heavy-ion accelerator complex. The fixed solid strip-pers including carbon-foil strippers are difficult to be used in on-going or upcoming new-generation in-flight RI beam facilit…
View article: Construction Status of the Superconducting Linac at RIKEN RIBF
Construction Status of the Superconducting Linac at RIKEN RIBF Open
An upgrade project of the RIKEN Heavy-Ion Linac, RILAC, is under going, which aims at the further investigation of the super-heavy elements and production of radioactive isotopes for medical applications. In this project, a new superconduc…
View article: Operational Experience and Upgrade Plans of the RIBF Accelerator Complex
Operational Experience and Upgrade Plans of the RIBF Accelerator Complex Open
The Radioactive Isotope Beam Factory (RIBF) is the cyclotron based accelerator facility for nuclear science, completed in the end of 2006. Now RIBF can provide the most intense RI beams. Continuous efforts since the first beam has increase…
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: Measurement of activation of helium gas by<sup>238</sup>U beam irradiation at about 11 A MeV
Measurement of activation of helium gas by<sup>238</sup>U beam irradiation at about 11 A MeV Open
A new helium-gas stripper system has been applied at the ~11 A MeV uranium beam of the Radioactive Isotope Beam Factory of the RIKEN accelerator facility. Although the gas stripper is important for the heavy-ion accelerator facility, the r…
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: 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: 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…