Observation of the acceleration of a single bunch by using the induction device in the kek proton synchrotron

A single rf bunch in the KEK proton synchrotron was accelerated with an induction acceleration method from the injection energy of 500 MeV to 5 GeV.</p

Ion Beam Storage with Electron Cooler and Digital Feedback Damping in HIMAC Synchrotron

Ion beam storage with eleceton cooler (EC) has a possibility of increasing ion beam intensity and enhancing beam quality, in order to expand attractive industrial and medical applications field of the synchrotron. It is experimentally observed that the circulation orbit of the storage beam become unstable when the spatial beam density exceeds a certain value during the beam stacking with electron cooling, especially in the vertical direction. Concept of feedback damping has proved to be effective for suppressing the beam oscillation. Digital feedback damping is recently installed at the main ring in NIRS. This paper reports the experimental result of the analog feedback damping, and design process of the digital feedback system.The Eighth International Topical Meeting on Nuclear Applications and Utilization of Accelerators (ACCAPP ’07

Manipulation of cooled beam for future heavy ion therapy

Irradiation of heavy ion beam has proved to be more effective for cancer therapy than conventional X-ray irradiation, because the ion beam efficiently generates DNA double strand break in tumor cells. In order to deliver a high quality beam for biophysics experiments, electron cooler, wideband rf system, and extraction kicker has been installed in Heavy Ion Medical Accelerator in Chiba (HIMAC). Demonstration of the longitudinal beam manipulation during cooling and fast extraction will be presented in this paper.9th european conference on accelerators in applied research and technolog

Handling Plan of Heavy Ion Beam for Further Experiments in HIMAC

A supply of cooled and accelerated heavy ion beam for further experiments is presently planned in HIMAC. This presentation reports on an experimental result of the beam cooling and acceleration in January 2007, and present status of HIMAC setup.mini-workshop on Ion Beam cooling at Low Energy Strorage Rings and Related Topic

Fully Digitized Synchronizing and Orbit Feed-back Control System

A full demonstration of the beam confinement and acceleration in the induction synchrotron was accomplished in March 2006.A discrete timing control unit to maneuver the generation of induction pulse-voltages was newly developed for controlling of the beam orbit in the induction synchrotoron and employed in this demonstrarion.European Particle Accelerator Conference　200

Manipulation of a cooled beam for future heavy ion therapy

In order to deliver a high-quality beam for biophysics experiments, an electron cooler, a wideband rf system, and an extraction kicker have been installed in the Heavy Ion Medical Accelerator in Chiba (HIMAC) at the National Institute of Radiological Sciences (NIRS). A demonstration of beam manipulation during cooling and fast extraction is presented in this paper

All-ion accelerators: An injector-free synchrotron

A medium-energy synchrotron capable of accelerating all-ion species is proposed. The accelerator employs a strong focusing lattice for ion-beam guiding and induction acceleration for acceleration and longitudinal capture, which is driven by a switching power supply. All ions, including cluster ions in their possible and arbitrary charge state, are accelerated in a single accelerator. Since the switching power supply employing solid-state switching elements is energized by a trigger signal, which is generated from a bunch monitor signal produced by a circulating ion bunch, the induction acceleration always synchronizes with the bunch circulation. This feature enables the realization of an almost injector-free synchrotron