Yoshida, M.

Paper	Title	Page
WEPCH182	Design of 9.4 GHz 950 keV X-band Linac for Nondestructive Testing	2358
	T. Yamamoto, T. Natsui, M. Uesaka UTNL, Ibaraki M. Akemoto, S. Fukuda, T. Higo, M. Yoshida KEK, Ibaraki K. Dobashi The University of Tokyo, Nuclear Professional School, Ibaraki-ken E. Tanabe AET Japan, Inc., Kawasaki-City
	Mobile "suit-case-sized" x-band (9.4GHz) 950 keV linac is designed for applications of nondestructive testing (NDT). Conventional device for the purpose is the S-band linac, but its drawback is a rather large device-size, large electron beam spot size of about 3 mm and lack of spatial resolution. We aim to realize the smaller spot size about 500 micro-m by a low emittance beam. The proposed system consists of the 9.4 GHz magnetron, modulator, thermionic RF electron gun and 9.4 GHz x-band linac and metal target for x-ray generation. The energy at the gun is 20 keV, and the final energy becomes 950 keV. Now, we are designing the linac structure of the pai/2 mode and analyzing the electromagnetic field (EMF) by SUPERFISH. At this time, we finish analyzing EMF of regular cavity cells and we are analyzing EMF of total accelerating tube. We have finished the detailed RF design. Further, we are also performing the design of the pai mode and going to discuss the advantages and drawbacks between them. Construction of the RF supplying system is underway. The detailed design parameters and updated status of the construction are presented at the spot.
WEPLS138	Operation Status and Statistics of the KEK Electron/Positron Linac	2700
	Y. Ogawa, A. Enomoto, K. Furukawa, T. Kamitani, M. Satoh, T. Sugimura, T. Suwada, Y. Yano, K. Yokoyama, M. Yoshida KEK, Ibaraki Y. Imai, T. Kudou, S. Kusano, K. Suzuki, T. Toufuku MELCO SC, Tsukuba
	The KEK electron/positron linac has been operated since 1982, surpassing the total operation time of more than 100,000 hours. It delivers four different beams to four different rings quite stably, even frequently switching beam modes. The operation time per year has reached 7,000 hours since 1999 when the KEKB entered a normal operation mode. Operation status and statistics will be reported with the emphasis on continuing efforts in various kinds of machine improvements, which have ensured the stable operation.
TUPCH063	Novel Method for Beam Dynamics using an Alpha Particle Source	1157
	A. Sato, M. Aoki, Y. Arimoto, I. Itahashi, Y. Kuno, T. Oki, M. Yoshida Osaka University, Osaka
	PRISM is a future muon source which would provide high intense, monochromatic and pure muon beams. In order to achieve such muon beams we use a technique called Phase Rotation using an FFAG ring (PRISM-FFAG). The PRISM-FFAG ring is now under construction in Osaka university. The Commissioning will start in JFY 2007. In order to investigate the dynamical performances of the FFAG before the actual commissioning, we propose a novel experimental method. The principle of the method and its application to PRISM-FFAG will be described in this paper.
WEOAPA03	MICE Overview - Physics Goals and Prospects	1870
	M. Yoshida Osaka University, Osaka
	Ionization cooling, a technique in which muon beam is passed through a series of absorbers and followed by RF-acceleration, is a proposed method for cooling muon beam, i.e., phase-space reduction. The international Muon Ionisation Cooling Experiment (MICE), which will construct and operate a realistic cooling channel and measure the beam cooling performance, is the first essential step towardsrealization of nutrino factories and eventually muon colliders based on intense muon sources. The MICE have got approved to be constructedin Rutherford Appleton Laboratory (RAL) and the fist beam commissioning is scheduled in 2007. The physics goal and future prospects of the MICE together with the beamline and the instruments which is now being built will be described.
	Transparencies
WEPLS056	R&D Status of the High-intense Monochromatic Low-energy Muon Source: PRISM	2508
	A. Sato, M. Aoki, Y. Arimoto, I. Itahashi, Y. Kuno, K. Kuriyama, T. Oki, T. Takayanagi, M. Yoshida Osaka University, Osaka M. Aiba, C. Ohmori, T. Yokoi, K. Yoshimura KEK, Ibaraki Y. Iwashita Kyoto ICR, Uji, Kyoto S. Machida CCLRC/RAL/ASTeC, Chilton, Didcot, Oxon Y. Mori KURRI, Osaka
	PRISM is a project of a future intense low-energy muon source, which combines monochromaticity and high purity. Its aimed intensity is about $1011-1012 muons per second. The muon beams will have a low kinetic energy of 20MeV so that it would be optimized for the stopped muon experiments such as searching the muon lepton flavor violating processes. PRISM consists of a pion capture section, a pion/muon transfer section and a phase rotation ssection. An FFAG is used as the phase rotator to achieve the monochromatic muon beams. This paper will describe design status of these sections as well as construction status of PRISM-FFAG.