NIRS, Chiba-shi
AEC, Chiba
Based on more than ten years of experience of the carbon cancer therapy with HIMAC, we have proposed a new treatment facility for the further development of the therapy with HIMAC. This facility will consist of three treatment rooms: two rooms equipped with horizontal and vertical beam-delivery systems and one room with a rotating gantry. For the beam-delivery system of the new treatment facility, a 3D hybrid raster-scanning method with gated irradiation with patient's respiration has been proposed. A R&D study has been carried out toward the practical use of the proposed method. In the R&D study, we have improved the beam control of the size, the position and the time structure for the proposed scanning method with the irradiation gated with patient's respiration. Further, owing to the intensity upgrade of the HIMAC synchrotron, we can successfully extend the flattop duration, which can complete one fractional irradiation with one operation period. The building construction of the new treatment facility will be completed at March 2010 and treatment of 1st patient is scheduled at March 2011. We will report the recent progress on the new treatment facility project at HIMAC.
FEL/Duke University, Durham, North Carolina
After years of development, High Intensity Gamma-ray Source (HIGS) at Duke University, the most powerful Compton gamma-ray source in the 1 to 100 MeV region, has recently become a dedicate light source facility for scientific research. Driven by the kW power of a storage ring FEL, the HIGS produces high-intensity gamma-ray beams with an exceptionally high flux, a total flux up to few 1010 g/s and a spectral flux of more than 103 g/s/eV, in the few MeV to 10 MeV region. With the present configuration, the HIGS has a wide energy tuning range from 1 to 100 MeV, a high degree of polarization (nearly 100%) switchable among linear, left-, and right-circular polarizations, and a high energy-resolution as low as 0.8% (FWHM). The planned future upgrades will enable the HIGS to produce high-energy gamma-ray beams up to 160 MeV, providing a precision tool for the photo-pion physics research. With these outstanding capabilities, the HIGS is a world-class Compton gamma-ray source for frontier research in a wide range of scientific areas from nuclear physics to astrophysics, from medicine to industry.
KURRI, Osaka
University of Fukui, Faculty of Engineering, Fukui
World's first ADSR experiments which use spallation neutrons produced by high energy proton beams accelerated by the FFAG synchrotron has started since March 2009 at KURRI. In these experiments, the prompt and delayed neutrons which indicate neutron multiplication caused by external source have been detected. The accelerator complex for ADSR study in KURRI consists of three FFAG proton rings. It delivers the 100MeV proton beam to the W target located in front of the subcritical nuclear fuel system constructed in the reactor core of KUCA (Kyoto University Critical Assembly) at 30Hz repetition rate. Current status of the facility and the future plans of ADSR system and high intensity pulsed spallation neutron source which employ a newly added 700MeV FFAG synchrotron to the existing FFAG complex in KURRI will be presented.