A5068575606- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Nuclear Physics and Applications
- Gyrotron and Vacuum Electronics Research
- Superconducting Materials and Applications
- Nuclear reactor physics and engineering
- Fusion materials and technologies
- Magnetic confinement fusion research
- Radiation Detection and Scintillator Technologies
- Advancements in Solid Oxide Fuel Cells
- Atomic and Subatomic Physics Research
- Graphite, nuclear technology, radiation studies
- Electrostatic Discharge in Electronics
- Pulsed Power Technology Applications
- Muon and positron interactions and applications
- Laser-Plasma Interactions and Diagnostics
- Electron and X-Ray Spectroscopy Techniques
- Cold Fusion and Nuclear Reactions
- Gear and Bearing Dynamics Analysis
- Semiconductor materials and interfaces
- Pulsars and Gravitational Waves Research
- Astronomy and Astrophysical Research
- Electrocatalysts for Energy Conversion
- Astrophysics and Cosmic Phenomena
- Radiation Therapy and Dosimetry
The University of Tokyo
2005-2025
High Energy Accelerator Research Organization
2002-2022
Tokyo University of Science
2005-2021
Kindai University
2018-2020
The Graduate University for Advanced Studies, SOKENDAI
2017
Tokyo Metropolitan University
2014-2016
Oxford Instruments (Canada)
2010
Chiba Institute of Technology
2003-2004
Chiba University
2002
Nagoya University
1999-2001
In organisms ranging from vertebrates to plants, major components of centromeres are rapidly evolving repeat sequences, such as tandem repeats (TRs) and transposable elements (TEs), which harbour centromere-specific histone H3 (CENH3)1,2. Complete centromere structures recently determined in human Arabidopsis suggest frequent integration purging retrotransposons within the TR regions centromeres3–5. Despite high impact 'centrophilic' on paradox rapid evolution, mechanisms involved targeting...
Background: Centromeres mediate chromosome segregation during cell division. In plants, centromeres are loaded with CENH3-variant nucleosomes, which direct kinetochore formation and spindle microtubule interaction. Plant frequently composed of megabase-scale satellite repeat arrays, or retrotransposon nests. monocentric genomes, such as Arabidopsis thaliana, extended regions pericentromeric heterochromatin surround the CENH3-occupied arrays. A zone suppressed meiotic crossover recombination...
The behavior of multipactoring electrons in an S-band pillbox RF window used the KEK electron linac was investigated. electric field distributions were calculated using MAFIA code. trajectory emitted to surface alumina disk simulated. energy deposition distribution impinging on also obtained. results agree well with discoloring patterns observed for disks after operation. This shows that can be explained terms bombardment single-surface electrons. Knowledge concerning and will useful...
A quantum dot network, which consists of coupled structures randomly dispersed dots, has been studied as a nano-scale optical reservoir for effective machine learning processing. In this study, we defined spatio-temporal fluorescence network the output, is due to characteristic dynamics excited energy in induced by laser pulse irradiation. order verify whether can improve processing efficiency advanced applications, performed experimental computing using numerical model. Several parameters...
The breakdown of RF windows used in high-power klystrons is one the most serious problems development klystrons. durability several dielectric materials for discussed terms secondary electron emission (SEE), cathodoluminescence, and loss. High-power tests these with TiN coatings, thus having low SEE, were also carried out using a traveling wave resonant ring. results show that alumina ceramics are superior to sapphire aluminum nitride. origin investigated, requirements window presented.<...
Thermoelectric power generation in the low temperature region has attracted considerable attention as a means of effective use distributed energy and for sensor applications. However, it is difficult to theoretically predict exact thermoelectric transport properties owing relatively narrow bandgap materials. In this study, high-purity α-SrSi2 crystal was synthesized by vertical Bridgman (VB) method. The carrier density VB-grown investigated, and, from dependence density, estimated that 13.1...
As a part of the Phase-II experimental series JAERI/USDOE collaborative program on fusion blanket neutronics, phase-IIB experiment has been performed. The provides information neutron multiplication and reflection by inner berryllium layer in full-coverage geometry. measurements were carried out at positions test zone tritium production rate (TPR) using various methods, reaction foil activation technique energy spectrum NE213 gas proportional counters. results showed that effect beryllium...
High power operation of all the RF systems J-PARC linac was started for cavity conditioning in October 2006. Twenty 324-MHz klystrons have supplied to accelerating cavities successfully, and beam commissioning November The drive control are working well, required stability is satisfied.
The construction of the initial part J-PARC linac has been started at KEK for beam tests before moving to JAERI Tokai campus, where facility is finally be constructed. RFQ and MEBT (Medium Energy Beam Transport) have already installed KEK, test performed successfully. In this paper, experimental results are presented together with simulation a 3D PIC (Particle-In-Cell) code.
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation S. Yamaguchi; On the Temperature of an Object Irradiated with Electrons. J. Appl. Phys. 1 October 1960; 31 (10): 1825–1826. https://doi.org/10.1063/1.1735456 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Dropdown Menu input auto...