Mori, Y.

Paper	Title	Page
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.
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
TUPP014	Control System for a 150 MeV FFAG Complex in KURRI	1556
	M. Tanigaki, N. Abe, K. Mishima, Y. Mori, Y. Oki, A. Osanai, S. Shiroya, K. Takami, K. Takamiya, T. Takeshita, A. Taniguchi, H. Yashima, H. Yoshino KURRI, Osaka M. Ikeda, Y. Kijima Mitsubishi Electric Corp, Energy & Public Infrastructure Systems Center, Kobe
	A simple, convenient control system has been developed for a 150 MeV proton FFAG accelerator complex at Research Reactor Institute, Kyoto University(KURRI). This control system is based on conventional PCs and programmable logic controllers (PLC) and these are connected over TCP/IP network. Each PLC is responsible for autonomous control of connected devices such as motors or power supplies, and also responsible for maintaining a parameter database periodic(~100 ms typically) read/written by remote PCs over TCP/IP network. Man-machine interfaces and integrated sequences are developed using LabView environment on these PCs. This control system has been successfully served for the actual operation of the FFAG complex, including the radiation protection control. Further developments, such as portable devices serving man-machine interfaces on site and the integration of SQL server for logging all possible parameters of this accelerator complex, are on the way.
WEPP119	The International Design Study for a Neutrino Factory	2773
	C. R. Prior STFC/RAL/ASTeC, Chilton, Didcot, Oxon J. S. Berg BNL, Upton, Long Island, New York M. Meddahi CERN, Geneva Y. Mori KURRI, Osaka
	The International Design Study (IDS) is the successor to the International Scoping Study (ISS), which identified a baseline scenario for a Neutrino Factory. IDS was launched in August 2007, with the aim of developing the baseline to the point where a full, technical design report can be written. The accelerator complex starts with a 4 MW proton driver operating at 50 Hz producing three to five, 1-2 ns bunches per pulse. The proton beam impacts on a liquid mercury jet target; pions are generated and are captured in a solenoid channel; they decay to muons which are phase rotated and formed into trains of interleaved bunches alternating in sign. The muon bunches then undergo ionisation cooling so as to be accepted by a linac, two dogbone recirculating linacs and finally an FFAG for acceleration to 25GeV. The muons are transferred to purpose-built storage rings, with long production straights, where they decay to neutrinos which are directed to detectors at distances of about 3000 km and 7500 km. IDS will be developing this baseline design, identifying its strengths and weaknesses, and progressing the whole towards a self-consistent scenario for the final technical design report stage.
THPP001	Development of FFAG Electron Accelerator	3372
	T. Baba, M. Takahashi, Y. Yuasa NHVC, Kyoto Y. Mori KURRI, Osaka
	Electron Beam (EB) Accelerators have been used in the many industrial fields to improve physical properties of the material. Examples are wire and cable industries, rubber tire industries, foam industries, etc. EB is also widely used for medical device sterilization as a popular tool. High power, high reliability, compactness and low cost are key requirements to get popularity of the technology and to open up its application fields. The paper will present FFAG electron accelerator to meet these requirements that NHV Corporation recently developed and some of the interesting performance such as beam extraction efficiency will be discussed in the paper.
THPP067	An Intense Neutron Source with Emittance Recovery Internal Target (ERIT) Using Ionization Cooling	3512
	Y. Mori KURRI, Osaka M. Muto FFAG DDS Research Organization, Tokyo K. Okabe University of Fukui, Faculty of Engineering, Fului
	An intense neutron source with emittance recovery internal target (ERIT) using ionization cooler ring has been developed at Kyoto University Research Reactor Institute (KURRI) for boron neutron capture therapy (BNCT). The neutron source consists of a 11MeV H- linac and a FFAG storage ring. A thin (10micron) Be target is placed in the ring. In order to reduce an emittance growth caused by multiple scattering at the target, an ionization cooling with a low frequency and high voltage RF cavity is utilized. The beam is expected to be survived for more than 500 turns in the ring, which can increase beam efficiency largely to reduce an injected beam current.
THPP070	Status of Center for Accelerator and Beam Applied Science of Kyushu University	3521
	Y. Yonemura, H. Arima, N. Ikeda, K. Ishibashi, H. Ishikawa, K. Maehata, T. Okai, N. Shigyo, Y. Uozumi, G. Wakabayashi Kyushu University, Department of Applied Quantum Physics and Nuclear Engineering, Fukuoka S. Fukumoto, Y. Kimura, H. Nakayama, A. Takagi KEK, Ibaraki Y. Mori KURRI, Osaka T. Noro, K. Sagara Kyushu University, Fukuoka T. Tomimasu SAGA, Tosu
	A new accelerator facility of Center for Accelerator and Beam Applied Science is under construction on Ito Campus to promote research and education activities at Kyushu University. The facility consists mainly of a 10 MeV proton cyclotron as an injector and a 150 MeV Fixed Field Alternating Gradient (FFAG) accelerator, which was developed at KEK as a prototype of proton FFAG for various applications. In this paper, the status of the development of devices and the facility is described.
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.