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Kinsho, Michikazu
AIP Conference Proceedings 773, p.45 - 49, 2005/06
JAERI and KEK have been working on the J-PARC project for a high intensity proton accelerator. The accelerator complex consists of a 400MeV linac, a 3GeV rapid cycle synchrotron, and a 50GeV synchrotron ring. The major requirements for the accelerator are summarized as follows, (1) The accelerator should provide the 1MW beam with a repetition rate of 25 Hz and a pulse length less than 1 us to the full use of pulsed spallation neutrons. (2) It should provide the several ten GeV beams with a beam power of 0.75MW for nuclear and particle physics experiments. As for the design of such a high intensity proton accelerator, from the experience of the past accelerator operation, the average beam loss should be kept at an order of 1W/m with a view to hands-on maintenance. Accordingly, there are several kinds of beam collimator in each accelerator and beam transport lines to minimize and localize the beam loss. We reported mainly the design concept and simulation results of the beam loss for each section.
Kumada, Hiroaki; Kishi, Toshiaki; Hori, Naohiko; Yamamoto, Kazuyoshi; Torii, Yoshiya
Research and Development in Neutron Capture Therapy, p.115 - 119, 2002/09
no abstracts in English
Sakane, H.*; Uno, Yoshitomo; Maekawa, Fujio; Kasugai, Yoshimi; Konno, Chikara; Kaneko, Junichi; Ikeda, Yujiro
Reactor Dosimetry: Radiation Metrology and Assessment (ASTM STP 1398), p.375 - 382, 2001/00
no abstracts in English
Yaoita, Kenichi*; Katayama, Yoshinori; Tsuji, Kazuhiko*; Kikegawa, Takumi*; Shimomura, Osamu
Review of Scientific Instruments, 68(5), p.2106 - 2110, 1997/05
Times Cited Count：34 Percentile：87.26(Instruments & Instrumentation)An optical device called a multichannel collimator (MCC) was developed to rapidly perform an angle-dispersive diffraction using a multi-anvil press (MAP) with synchrotron radiation. The MCC consists of multiple channels of collimators in a radial alignment. This eliminates diffraction from the materials surrounding the sample so that we can obtain high-quality diffraction from samples in a MAP using an imaging plate. We have installed a MCC system on a MAP named MAX90 at the Photon Factory, National Laboratory for High Energy Physics. Performance of the MCC has been satisfactorily evaluated, and diffraction patterns of liquid sodium and liquid gallium under 4.8 GPahave been succesfully obtained using this system.
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Nuclear Instruments and Methods in Physics Research A, 245, p.173 - 181, 1986/00
Times Cited Count：7 Percentile：69.99(Instruments & Instrumentation)no abstracts in English
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JAERI-M 83-195, 74 Pages, 1983/11
no abstracts in English
; ; ; Nobuaki Minakawa*
Japanese Journal of Applied Physics, 4(11), p.911 - 914, 1965/00
Times Cited Count：1no abstracts in English
