Beam-commissioning study of high-intensity accelerators using virtual accelerator model (2009)
Harada, H, Shigaki, K, Irie, Y, Noda, F, Saha, P. K., Shobuda, Y, ...
Fujiwara, H., Ogawa, S., Motoyama, M., Takei, Y., Machida, S., Taneichi, A., ...
Infertility patients are known to be at increased risk of endometrial carcinoma (EC) and atypical hyperplasia (AH). However, the incidence and clinical features of EC and AH in these patients remain...
Orbit distortion and its correction in a non-scaling FFAG (2008)
The large variation in betatron tune over the energy range of the EMMA non-scaling FFAG, and the rapidity of the acceleration, result in novel features in the properties of orbit distortion. The...
Neutrino Factory Collaboration, Kelliher, DJ, Machida, S, Prior, CR, Rees, GH, Méot, F
Two designs considered by the International Scoping Study (ISS) for the final stage of the neutrino factory are the triangle and bow-tie muon decay rings. Unlike the racetrack design, these...
EMMA - the World's First Non-scaling FFAG (2008)
Edgecock, TR, Beard, Carl David, Berg, JS, Bliss, N, Clarke, James, Craddock, M, ...
mid-distant tail associated with substorm (2007)
S. Machida, Y. Miyashita, A. Ieda, A. Nishida, T. Mukai, Y. Saito, ...
GEOTAIL observations of flow velocity and northsouth
Design Study Of Antiproton Accumulation And Deceleration Ring In The Kek Ps Complex (2007)
Machida And Yoshii, S. Machida, M. Yoshii, Y. Mori, N. Tokuda
An antiproton accumulation and deceleration ring in the KEK proton synchrotron (KEK PS) complex has been designed. The KEK PS top energy is 12 GeV and it is enough to produce 2 GeV/c antiprotons. As...
Direct Fast Beam Chopping Of H (2007)
Ion Beam In, K. Shinto, A. Takagi, Z. Igarashi, K. Ikegami, M Kinsho, ...
A fast beam chopping directly in a surface-plasma H # ion source was proposed and a preliminary test has been examined. The converter bias voltage is modulated and the extracted H # beam is observed....
Orbit and optics distortion in fixed field alternating gradient muon accelerators (2007)
Neutrino Factory Collaboration, Machida, S, Kelliher, DJ
In a linear nonscaling fixed field alternating gradient (FFAG) accelerator, betatron tunes vary over a wide range and a beam has to cross integer and half-integer tunes several times. Although it is...
Accelerator design concept for future neutrino facilities (2007)
Neutrino Factory, Neutrino Factory Collaboration, Apollonio, M, Berg, JS, Blondel, A, Bogacz, A, ...
This document summarizes the work of the Accelerator Working Group (AWG) of the International Scoping Study (ISS) of a Future Neutrino Factory and Superbeam Facility. The main goal of the activity...
Accelerator Physics Code Web Repository (2006)
Zimmermann, Frank, Basset, R, Bellodi, G, Benedetto, E, Dorda, U, Giovannozzi, Massimo, ...
In the framework of the CARE HHH European Network, we have developed a web-based dynamic acceleratorphysics code repository. We describe the design, structure and contents of this repository,...
Comparison of Zgoubi and S-Code regarding the FFAG muon acceleration (2006)
The high flux accelerator based neutrino source is foreseen as one the next generation facilities of particle physics. Called Neutrino Factory (NuFact), it will be based on a muon storage ring where...
Gluckstern, Robert L., Machida, S., Ryne, Robert D., Seeman, J. T., Guo, Z. Y.
1) Methods of Impedance Calculation; 2) Space-Charge Calculations in Synchrontrons; 3) Advanced computers and simulation; 4) Measured Optimum BNS Damping configuration of the SLC Linac; 5)Single Beam...
Volcanism in Response to Plate Flexure (2006)
Hirano, N., Takahashi, E., Yamamoto, J., Abe, N., Ingle, S.P., Kaneoka, I., ...
Volcanism on Earth is known to occur in three tectonic settings: divergent plate boundaries (such as mid-ocean ridges), convergent plate boundaries (such as island arcs), and hot spots. We report...
Comparison of Zgoubi and S-Code regarding the FFAG muon acceleration (2006)
The high flux accelerator based neutrino source is foreseen as one the next generation facilities of particle physics. Called Neutrino Factory (NuFact), it will be based on a muon storage ring where...
Comparison of Zgoubi and S-Code regarding the FFAG muon acceleration (2006)
The high flux accelerator based neutrino source is foreseen as one the next generation facilities of particle physics. Called Neutrino Factory (NuFact), it will be based on a muon storage ring where...
Remote sensing of a near-Earth neutral line during the 5 October 2000 substorm (2006)
Nagata, D., Machida, S., Ohtani, S., Mende, S. B., Saito, Y., Mukai, T.
In this paper we examined the continuous motions of a near-Earth neutral line during the recovery phase of the 5 October 2000 substorm. Estimation was based on the PSBL ion beam model proposed by...
Remote sensing of a near-Earth neutral line during the 5 October 2000 substorm (2006)
Nagata, D., Machida, S., Ohtani, S., Mende, S. B., Saito, Y., Mukai, T.
In this paper we examined the continuous motions of a near-Earth neutral line during the recovery phase of the 5 October 2000 substorm. Estimation was based on the PSBL ion beam model proposed by...
An Anti-symmetric Lattice for High Intensity Rapid-cycling Synchrotrons (2006)
Wei, J, Fang, S, Lee, YY, Machida, S, Prior, Christopher, Qin, Q, ...
Longitudinal emittance blowup in fixed field alternating gradient muon accelerators (2006)
Neutrino Factory Collaboration, Machida, S
Phys. Rev. ST Accel. Beams 9, 104002 (2006)
SIMPSONS WITH WAKE FIELD EFFECTS (2006)
SIMPSONS, which is originally developed by S. Machida, is the program that calculates the space charge effect of the beam in the ring. We have installed the wake field effect into SIMPSONS, because...
Stresses and Strains in a Disk with Variable Modulus of Elasticity, (2005)
A transparent material with variable modulus of elasticity has been manufactured. It exhibits good photoelastic properties, and can also be strain analyzed by printing gratings on its surface and...
Observation of beam-size blowup due to half-integer resonance in a synchrotron (2004)
Uesugi, T, Fujisawa, T, Noda, K, Hashimoto, Y, Machida, S, Mori, Y, ...
Acceptance survey of FFAG accelerators for the neutrino factory (2003)
Neutrino Factory Collaboration, Aiba, M, Yoshimoto, M, Mori, Y, Machida, S, Yokoi, T
Longitudinal Impedance Tuner Using High Permeability Material (2002)
Koba, K, Arakawa, D, Fujieda, M, Ikegam, K, Ishi, Y, Kanai, Y, ...
Injection Choice for Spallation Neutron Source Ring (2001)
Beebe-Wang, J, Blaskiewicz, M, Brodowski, J, Fedotov, A, Gardner, C, Lee, Y, ...
MA-loaded cavity for barrier bucket experiment (2000)
Fujieda, M, Machida, S, Mori, Y, Nakayama, H, Ohmori, C, Sato, Y, ...
Beam loading in JHF 50 GeV proton synchrotron (1999)
Yamamoto, M, Uesugi, T, Ohmori, C, Saitô, K, Souda, M, Sawada, S, ...
Design of the kicker systems for the JHF 50-GeV main ring (1999)
Shirakabe, Y, Ishi, Y, Machida, S, Mori, Y, Muto, M, Shibuya, S
Design study of the slow-extraction system for the JHF 50-GeV main ring (1998)
Tokuda, N, Tomizawa, M, Arakaki, Y, Machida, S, Mori, Y, Watanabe, T
Response of a Strand to Axial and Torsional Displacements, (1998)
Taking advantage of geometric considerations, and following previous studies by Hruska, the authors give explicit expressions for the determination of axial force, bending and twisting moments in...
Response of Oversized Epoxy Strand Models to Axial, Torsional and Bending Loads, (1998)
Axial, torsional and bending loadings have been applied to the models. Strains, stresses and displacements have been determined using mechanical and electrical strain gages, dial gages and brittle...
Strains and Displacements on a Steel Wire Strand, (1998)
There is a great industrial interest in the knowledge of the load transfer and the stress distribution in assembled wires making strands and in assembled strands making wire-ropes. The part of a...
Beam loading effects in JHF synchrotron (1998)
Yamamoto, M, Ezura, E, Fujieda, M, Hashimoto, Y, Kobayashi, H, Nakayama, H, ...
A design of the slow extraction system in the JHF 50-GeV proton synchrotron (1998)
Tokuda, N, Tomizawa, M, Arakaki, Y, Machida, S, Mori, Y, Watanabe, T
Intensity dependence of betatron resonances observed at the KEK-PS (1998)
Shoji, Y, Arakawa, D, Kishiro, J, Koba, K, Machida, S, Marutsuka, K, ...
Beam Loading Effects in JHF Synchrotron (1998)
M. Yamamoto, E. Ezura, M. Fujieda, Y. Hashimoto, H. Kobayashi, H. Nakayama, ...
Beam loading effects on the rf system of JHF proton synchrotrons have been investigated by both computer simulation and experiment using a low energy electron beam. From the simulation results, it is...
Polarized deuteron beam acceleration at the KEK-PS (1997)
Sato, H., Toyama, T., Shoji, Y., Shirakata, M., Marutsuka, K., Yoshii, M., ...
Polarized deuteron beam acceleration at the KEK-PS (1997)
Sato, H., Toyama, T., Shoji, Y., Shirakata, M., Marutsuka, K., Yoshii, M., ...
Polarized deuteron beam acceleration at the KEK-PS (1996)
Sato, H, Toyama, T, Shoji, Y, Shirakata, M, Marutsuka, M, Yoshii, M, ...
Positive-ion multi-turn injection with bi-waveform fast orbit-bump magnets (1996)
Sakai, I, Takagi, A, Mori, Y, Machida, S, Yoshii, M, Toyama, T, ...
Synchrotron design issues of the Japanese Hadron Project (1996)
Mori, Y, Ishi, Y, Muto, M, Nakayama, H, Ohmori, C, Shibuya, S, ...
Yamamoto, Y., Matinaga, F., Machida, S., Karlsson, A., Jacobson, J., BjÖrk, G., ...
No abstract available
Yamamoto, Y., Matinaga, F., Machida, S., Karlsson, A., Jacobson, J., BjÖrk, G., ...
No abstract available
Yamamoto, Y., Matinaga, F., Machida, S., Karlsson, A., Jacobson, J., BjÖrk, G., ...
No abstract available
Cavity Quantum Electrodynamics in Semiconductor Laser, (1992)
Yamamoto, Y., Horowicz, R., Machida, S., Bjoerk, G., Richardson, W. H.
A one-dimension (planar) microcavity structure shown in can increase the coupling efficiency Beta of spontaneous emission into a single cavity resonant mode, if the spontaneous emission spectral...
Orbit distortion and correction in the EMMA non-scaling FFAG
The large variation in betatron tune over the energy range of the EMMA non-scaling FFAG, and the rapidity of the acceleration, result in novel features in the properties of orbit distortion. The...