[en] Full text: New generation RIB facilities in operation or under construction are expected to provide new opportunities for experimental challenge to investigate heavy element synthesis. The talk will include new results from RIKEN RI Beam Factory, which started operation in 2007. Various possibilities to attack problems regarding explosive nucleosynthesis will also be discussed.

[en] The accelerator research facility at RIKEN has three major accelerators : variable frequency linear accelerator, K70 AVF cyclotron, and K540 ring cyclotron (RRC). Recently a variable frequency RFQ was added as an injector to the linac to improve the beam intensity along with 18GHz ECR ion source. To continue to serve the users from the various fields, RIKEN proposed the Radio Isotope (RI) Beam Factory project, and it was approved last year. Two new superconducting ring cyclotrons (SRC-4 and SRC-6) will boost the energy of heavy ion beams from the RRC for the RI beam production on the entire periodic table. The RI beam produced is mass-separated and can be injected into accumulator, collider, and booster rings. An overview of the present and proposed facility will be given. And some details will be discussed on the SRC-6 whose model sector magnet is under construction. (author)

No abstract available

[en] A high-spin isomeric beam line has been constructed at RIKEN based on the inverse kinematics of fusion-evaporation reactions. The beam line provides high-spin isomers as secondary beams, whose intensity is more than 10⁵ sec^-1. The characteristics and the present status of the beam line are described

[en] Injectors for cyclotrons must provide low emittance beams with variable energy and bunch repetition frequency. The parameters of standard RFQs, which are short duty factor and constant operating frequency are not favourable for cyclotron application. Our development of the VE-RFQ has been adopted to match the HMI-cyclotron at HMI in Berlin as a first variable frequency RFQ operating in cw-mode. Another example is the RFQ at RIKEN which injects into the RILAC variable frequency linac. The layout and properties of these RFQs will be described

[en] This issue of RIKEN Accelerator Progress Report reports research activities of the RIKEN Accelerator Research Facility (RARF) during the calendar year of 1999. The research programs have been coordinated in the framework of the project entitled Multidisciplinary Researches on Heavy Ion Science. The project involves a variety of fields such as: nuclear physics, atomic physics, nuclear chemistry, radiation biology, condensed matter physics in terms of accelerator of radiation application, basic studies on energy production, basic studies on accelerator cancer therapy, material characterization, application to space science, accelerator physics and engineering, laser technology, and computational technology. These activities involved 12 laboratories in RIKEN and more than 300 researchers including outside users from domestic and foreign institutions. Thirty-six universities and institutes from within Japan and 33 institutes from 10 countries are included. (J.P.N.)

[en] For the RIKEN Radioactive Isotope Beam Factory (RIBF) project, the Experimental Physics and Industrial Control System (EPICS)-based distributed control system is utilized in Linux and vxWorks. Utilizing network attached storage (which has a high-availability system) as a shared storage, common EPICS programs (Base, Db, and so on) are shared by each EPICS Input/Output Controller (IOC). From the initial development of RIBF control system, it has continued to grow and consisted of approximately 50 EPICS IOCs and more than 100,000 EPICS records. Because RIBF has been constructed by extending RIKEN Accelerator Research Facility (RARF) in a previous project, the controllers for RARF are also utilized for RIBF control system. In this case, the dependence between the EPICS records and EPICS IOCs becomes complicated. For example, it is not easy to know the accurate EPICS record name information using only the device information. Therefore, we constructed a new management system for the RIBF control system to easily call up the detailed information. In the system, by parsing startup script files (st.cmd) to run EPICS IOCs, all EPICS records and EPICS fields are stored in the PostgreSQL-based database. By utilizing these stored data, we succeeded in developing Web-based management and search tools. (author)

[en] One of the major motivations driving recent interest in FFAGs is their use for the cost-effective acceleration of muons. This paper summarizes the progress in this area that was achieved leading up to and at the FFAG workshop at KEK from July 7-12, 2003. Much of the relevant background and references are also given here, to give a context to the progress we have made

[en] The RIKEN ring cyclotron system is controlled by means of three mini-computers, which are linked with one another through optical fiber loops. A CAMAC serial crate network and a GP-IB are used for the control of accelerator devices. Two types of intelligent modules are used; one is a CAMAC module and the other is a therminal module for high-speed local control of the accelerator devices. The operating system OS60/UMX is a combination of a real time and a UNIX system. Application programs are written in FORTRAN 77 language. Most operations are performed by touch pannels. (author)

No abstract available