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- Publications
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Plasma structures observed in gas breakdown using a 1.5 MW, 110 GHz pulsed gyrotron
Regular two-dimensional plasma filamentary arrays have been observed in gas breakdown experiments using a pulsed 1.5 MW, 110 GHz gyrotron. The gyrotron Gaussian output beam is focused to an intensity… Expand
Study of optimal cutting condition for energy efficiency improvement in ball end milling with tool-workpiece inclination
- Y. Oda, M. Mori, K. Ogawa, S. Nishida, M. Fujishima, T. Kawamura
- Engineering
- 2012
Abstract Reduced energy consumption is critical in industrial applications. In this manuscript, we report our findings on cutting condition improvement for 5-axis machine tools, specifically… Expand
Progress of high power 170 GHz gyrotron in JAEA
- K. Sakamoto, A. Kasugai, +4 authors N. Kobayashi
- Physics
- 1 September 2009
Recent progress on the high power gyrotron development in JAEA is presented. The gyrotron is featured to have a triode-type magnetron injection gun, a cylindrical resonator working at 170 GHz with… Expand
High power millimeter wave experiment of ITER relevant electron cyclotron heating and current drive system.
- K. Takahashi, K. Kajiwara, +6 authors M. Henderson
- Materials Science, Medicine
- The Review of scientific instruments
- 23 June 2011
High power, long pulse millimeter (mm) wave experiments of the RF test stand (RFTS) of Japan Atomic Energy Agency (JAEA) were performed. The system consists of a 1 MW/170 GHz gyrotron, a long and… Expand
Status of the ITER Electron Cyclotron Heating and Current Drive System
- C. Darbos, F. Albajar, +31 authors K. Takahashi
- 2016
The electron cyclotron (EC) heating and current drive (H&CD) system developed for the ITER is made of 12 sets of high-voltage power supplies feeding 24 gyrotrons connected through 24 transmission… Expand
Development of pellet injector system for large helical device
- H. Yamada, R. Sakamoto, +9 authors M. Gouge
- Materials Science
- 1 November 2000
A multi-pellet injector system has been developed as a fundamental fueling tool for the Large Helical Device (LHD). Since a primary goal of the LHD project is demonstration of steady-state… Expand
New morphology, symmetry, orientation and perfection of lysozyme crystals grown in a magnetic field when paramagnetic salts (NiCl2, CoCl2 and MnCl2) are used as crystallizing agents
- Da-Chuan Yin, Y. Oda, Nobuko I. Wakayama, M. Ataka
- Chemistry
- 1 May 2003
Abstract Chlorides with different paramagnetic cations such as Ni 2+ , Co 2+ and Mn 2+ were used as crystallizing agents instead of NaCl to crystallize hen egg-white lysozyme. NiCl 2 was found to… Expand
Full high-power modulation on a 170 GHz 1 MW ITER gyrotron with a triode magnetron injection gun
- K. Kajiwara, K. Sakamoto, Y. Oda, K. Hayashi, K. Takahashi, A. Kasugai
- Physics
- 28 March 2013
A 5 kHz full power modulation experiment is demonstrated on a 170 GHz gyrotron. 5 kHz high-power and beam on/off modulation is achieved by employing a fast short-circuited switch between the anode… Expand
Development of high power gyrotron for ITER application
- K. Sakamoto, K. Kajiwara, +6 authors C. Darbos
- Materials Science
- 35th International Conference on Infrared…
- 28 October 2010
Recent progress on the development of a high power 170 GHz gyrotron obtained in Japan Atomic Energy Agency (JAEA) is presented. Firstly, the repetitive operation of 800 kW/600 s with an interval of… Expand
ECRH System for ITER
- C. Darbos, M. A. Henderson, +25 authors H. Zohm
- Physics
- 2 December 2009
A 26 MW Electron Cyclotron Heating and Current Drive (EC H&CD) system is to be installed for ITER. The main objectives are to provide, start‐up assist, central H&CD and control of MHD activity. These… Expand