Kuriyama, Y.

Paper	Title	Page
TUOBM04	FFAGs for the ERIT and ADS Projects at KURRI	1013
	T. Uesugi, H. Horii, Y. Kuriyama, K. Mishima, Y. Mori, A. Osanai, T. Planche, S. Shiroya, M. Tanigaki, H. Yoshino KURRI, Osaka M. Inoue SLLS, Shiga Y. Ishi Mitsubishi Electric Corp, Energy & Public Infrastructure Systems Center, Kobe M. Muto FFAG DDS Research Organization, Tokyo K. Okabe, I. Sakai University of Fukui, Faculty of Engineering, Fului
	A chain of FFAG proton accelerator have been under construction at Kyoto University Research Reactor Institute (KURRI), Osaka, for the study of accelerator driven system (ADS) since 2004. The accelerator is a cascade type and composed of three different FFAG rings: injector, booster and main ring. The maximum energy of the main ring is 150 MeV for proton. The beam was successfully accelerated and extracted from the booster in June of 2006 and the beam commissioning of the main ring has started since then. Recently the beam has been successfully injected into the main ring.
	Slides
MOPP103	High Field Gradient RF System for Bunch Rotation in PRISM-FFAG	796
	C. Ohmori KEK, Ibaraki M. Aoki, Y. Arimoto, I. Itahashi, Y. Kuno, Y. Kuriyama, A. Sato, M. Y. Yoshida Osaka University, Osaka Y. Iwashita Kyoto ICR, Uji, Kyoto Y. Mori KURRI, Osaka
	The PRISM project aims to supply a high quality muon beam using a wide aperture FFAG for mu-e conversion experiment. The low energy muon which has a large momentum spread will be manipulated in the FFAG using a bunch rotation technique with a low frequency RF around 3.5 MHz. Because of a short lifetime of muon, the rotation should be end in 5-6 turns in the FFAG and more than 2 MV is needed. The low frequency RF system using a magnetic alloy is designed to achieve a very high field gradient of more than 200 kV/m. The whole system is designed for a very low duty pulse operation to minimize the cost. The system has been modified to operate at 2 MHz for the beam test using alpha particle. A field gradient of more than 100 kV/m has been obtained by the preliminary test.
THPP007	Six-sector FFAG Ring to Demonstrate Bunch Rotation for PRISM	3389
	A. Sato, M. Aoki, S. Araki, Y. Arimoto, Y. Eguchi, K. Hirota, I. Itahashi, Y. Kuno, Y. Kuriyama, Y. Nakanishi, M. Y. Yoshida Osaka University, Osaka Y. Iwashita Kyoto ICR, Uji, Kyoto A. Kurup Imperial College of Science and Technology, Department of Physics, London Y. Mori KURRI, Osaka C. Ohmori KEK, Ibaraki
	A monochromatic muon beam is one of the most important requirements to improve a sensitivity of mu-e conversion experiments. In the PRISM project, which searches for mu-e conversion at a sensitivity of BR~10-18, makes such muon beams by using a bunch rotation technique in an FFAG ring. To demonstrate the bunch rotation, a FFAG ring has been constructed in RCNP, Osaka. The ring has six FFAG magnets and one RF cavity. Alpha particles from a radioactive isotope 241Am will circulate in the ring for the demonstration of bunch rotation.
THPP071	Construction of Six-sector FFAG Ring for Muon Phase Rotation	3524
	Y. Arimoto, M. Aoki, S. Araki, Y. Eguchi, K. Hirota, I. Hossain, I. Itahashi, Y. Kuno, Y. Kuriyama, Y. Nakanishi, A. Sato, M. Y. Yoshida Osaka University, Osaka Y. Iwashita Kyoto ICR, Uji, Kyoto A. Kurup Imperial College of Science and Technology, Department of Physics, London Y. Mori KURRI, Osaka C. Ohmori KEK, Ibaraki T. Oki Tsukuba University, Ibaraki
	PRISM is a next-generation of muon source which provides high purity, high intense and high brightness beam. In PRISM, a PRISM-FFAG is one of key section which make a muon beam narrow energy width by using phase rotation technique. To demonstrate the phase rotation, a six-cell FFAG ring has been constructed; the ring consists of full size of scaling-FFAG magnets and a high gradient rf cavity. The experiment is achieved by injecting alpha particles from a radioisotope source as a beam. Construction of the ring has been started from September, 2007; beam duct has been designed and installed, the six FFAG magnets has been aligned, etc. In this paper, we will present the design of the ring and the construction (alignment, etc) from engineering point of view.