NTUA - FUSION RESEARCH TEAM

Tuesday, 28 December 2010 15:42 |

NATIONAL TECHNICAL UNIVERSITY OF ATHENS
SCHOOL OF ELECTRICAL AND COMPUTER ENGINEERING
Fusion Research Team

Head of Research Team: Kyriakos Hizanidis, Professor

Address: Iroon Politechniou 9, 157 73 Zografou, Athens, Greece

Telephone: +30 210 772 3685, +30 210 772 2469-70

Fax: +30 210 772 3513

e-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

Staff:
• J. Vomvoridis - Professor
• J. Roumeliotis - Professor
• H. Glytsis - Professor
• A. Kladas - Associate Professor
• A. Lazaros - Postdoc Researcher
• C. Iatrou - Postdoc Researcher
• I. Sandberg - Postdoc Researcher
• Y. Kominis - Postdoc Researcher
• J. Pagonakis - Postdoc Researcher
• C. Avramidis - Postdoc Researcher
• G. Anastasiou - Doctoral Candidate
• A. Anastasiadis - Researcher

Scientific Interests:

• Electrostatic and electromagnetic effects on an electron beam, in particular in gyrotron system configurations, including: electrostatic effects in a gyrotron beam tunnel, stability of e sheet electron beam, harmonic coaxial gyrotron interactions, gyrotron interaction with propagating electron beam, Hamiltonian map description and highly efficient numerical integration of electron dunamics in gyrotrons.
• Analytical and numerical investigations on the excitation and evolution of linear and non-linear drift-type plasma instabilities and associated phenomena such as drift turbulence, properties of large scale flows in tokamaks, coherent structures and plasma transport.
• Non-resonant suppression of MHD modes (such as the sawtooth instability and the neoclassical tearing modes) by superthermal particles (i.e. ions and electrons) during r.f. heating.

Publications in Fusion:

• I. Sandberg, H. Isliker, V.P. Pavlenko, K. Hizanidis, and L. Vlahos, "Fluid simulations of toroidal ITG turbulence," Phys. Plasmas 13, 022311 (2006).

• A. Lazaros, A. Shimizu, Y. Yoshimura, K. Matsuoka, S. Okamura, C. Suzuki, and the CHS Group, "New experimental evidence for the stabilizing effect of a superthermal electron avalanche during electron cyclotron resonant heating," Phys. Plasmas 9, 3007-3012 (2002).

• I. Sandberg, "Explicit treshold of the toroidal ion temperature gradient mode instability," Phys. Plasmas 12, 050701 (2005).

• I. Sandberg, H. Isliker, V. P. Pavlenko, K. Hizanidis, and L. Vlahos, "Generation and saturation of large scale flows in flute turbulence," Phys. Plasmas 12, 032503 (2005).

• Y. Kominis, O. Dumbrajs, K. A. Avramides, K. Hizanidis, and J. L. Vomvoridis, "Chaotic electron dynamics in gyrotron resonators," 29th Joint International Conference on Infrared and Millimeter Waves and 12th International Conference on Terahertz Electronics, 27 September-1 October 2004, 629-630, Karlsruhe, Germany.

• K. A. Avramides C. T. Iatrou and J. L. Vomvoridis, "Design considerations for powerful continuous-wave second-harmonic coaxial-cavity gyrotrons," IEEE Trans.Plasma Science 32, 917-928 (2004).

• J. G. Pagonakis and J. L. Vomvoridis, "Evolution of nonuniform electron beam in a cylindrical beam tunnel," IEEE Trans. Plasma Science 32, 890-898 (2004).

Annual Reports:

• Annual Report 1999-2000

2a1) Non-cylindrical e -beam for quasi-optical gyrotron
2a2) Self-consistent 3-D electrostatic code for gyrotron beam tunnel
2a4) Coaxial and harmonic gyrotrons
2c4) Non-resonant stabilisation of sawteeth and tearing modes by superthermal particles (ions and electrons) during ICRH and ECRH

• Annual Report 2001

2a1) Non-cylindrical e -beam for quasi-optical gyrotron
2a2) Self-consistent 3-D electrostatic code for gyrotron beam tunnel
2a4) Coaxial and harmonic gyrotrons
2c3) Stochastic modelling of transport phenomena
2c4) Assessment of the theory of non-resonant stabilization by superthermal particles

• Annual Report 2002

2a1) Non-cylindrical e -beam for quasi-optical gyrotron
2a2) Self-consistent 3-D electrostatic code for gyrotron beam tunnel
2a4) Coaxial and harmonic gyrotrons
2c4) Experimental stabilization of sawtooth and NTM by superthermal particles

• Annual Report 2003

2a1) Application of sheet e-beam to quasi-optical gyrotron
2a2) Self-consistent 3-D electrostatic code for gyrotron beam tunnel
2a4) Coaxial and harmonic gyrotrons
2c4) Experimental demonstration of sawtooth and NTM stabilization by superthermal particles (ions and electrons) during ICRH and ECRH

• Annual Report 2004

2a1) Application of sheet e-beam to quasi-optical gyrotron
2a2) Self-consistent 3-D electrostatic code for gyrotron beam tunnel
2a4) Coaxial and harmonic gyrotrons
2a5) Chaotic electron dynamics in gyrotron resonators
2c2) MHD turbulent transport in plasmas

• Annual Report 2005