Back to the main page

The Guestbook

At the present time, most of the world’s energy is produced by burning fossil fuels like coal, gas and oil, which are limited to some 100 – 200 years of use. However, already in 50 years from now, the world population will rise to about 10 billion people, and the energy consumption is estimated to rise to a value that is approximately three times higher than what is being consumed now. Thus, continuation of the burning of fossil fuels for energy production could pose a serious problem in the future. Moreover, the massive use of fossil fuels might lead to the release of giant quantities of CO2 in to the atmosphere. CO2 is a greenhouse gas that leads to an increased absorption of the infrared radiation re-emitted by the Earth. This explains the importance of renewable energy sources, such as windmills, solar panel power plants, biogas power factories and many others, to overcome the abovementioned environmental effects. For a number of reasons, however, the renewable energy sources can only cover approximately several tens of percent of the world energy need and therefore it is important to explore also other forms of electricity production.
Controlled thermonuclear fusion can fulfill the demand of mankind to have an inexhaustible source of energy that does not cause any serious environmental pollution. To produce energy, two light nuclei must be brought close enough together to overcome the so-called Coulomb barrier such they can fuse. The kinetic energy of these nuclei should be high enough to cross the barrier and arrive in the zone very close to the nucleus, where the nuclear forces are larger than the electrostatic repulsion. In the nuclear reaction, according to the famous Einstein equation E = mc^2, a small portion of mass is released in the form of energy.
The most accessible fusion reaction is the reaction involving deuterium (D) and tritium (T). It is on this reaction that most research on controlled fusion is being conducted.
The temperature (which measures the interaction energy) required for nuclear fusion reactions should exceed a hundred million degrees. At this temperature electrons are detached from the nucleus. Thus, atoms are ionized and form a gas of ions and electrons. This is the fourth aggregate state of matter called plasma. Plasma is the most widespread form of matter in the Universe and exists in a large diversity of objects.
A star (and our Sun in particular) starts to shine when, under the action of gravity, the matter inside it attains sufficiently high densities and temperatures to set off thermonuclear reactions. In this way the natural tendency of the plasma of dispersing and, therefore, cooling down is balanced by the gravitational force. On Earth, however, gravitational confinement of plasma is impossible. Two possible scenarios are being studied to generate fusion energy from thermonuclear reactions: inertial confinement, in which a small volume of matter is being raised to very high density and temperature in a short time, and magnetic confinement, in which a hot plasma is confined by a force from external magnetic fields. Experimental devices that are based on the idea of magnetic confinement seem to be the most promising at this time.
The aim in thermonuclear fusion research is to build a continuously operating reactor in which the energy released by the fusion reactions is sufficiently high to keep the plasma hot and to produce more fusion reactions.
The most efficient magnetic configuration so far has been invented in the 1950’s by Soviet scientists. This device has been called “Tokamak”, which is an acronym for the Russian name “TOroidal’naya KAmera MAGnitnaya”; the letter “G” has been substituted to “K” to ease the pronunciation (see the Figure below). Tokamaks have rapidly replaced many other magnetic configurations in the research of controlled nuclear fusion. Today, only stellarators are still considered as a possible alternative to the tokamaks, albeit that their present performance is significantly lower than that of tokamaks.

Nowadays, the largest tokamak in the World is JET (Joint European Torus) in the United Kingdom. In the coming years, the construction of an even larger machine, ITER (Latin word for ‘The way’), that will produce a fusion plasma and demonstrate the feasibility of a future power plant, will start in Cadarache, France.

Charged particles in a plasma can be subject to natural oscillations. Charged particles gyrate around the magnetic field lines due to the Lorentz force. This force is always perpendicular to the local magnetic field direction and to the particle velocity vector. If the particle is an electron, its rotation frequency is called the electron cyclotron (EC) frequency.
Because the electrons gyrate around the magnetic field lines, confining the plasma, they are accelerating and emit radiation at the basic electron cyclotron frequency and its harmonics due to the periodic movement. The electron cyclotron frequency is proportional to the magnetic field strenght and, hence, to the radial position in the tokamak.

This ECE radiation can be used to evaluate the electron temperature at different plasma positions. One should take into account, however, that there is a certain frequency range limit due to the 2nd and 3rd harmonics overlap at the higher frequencies, if ECE radiation is measured at the Low Field Side of a tokamak. The 3rd harmonic ECE is also available for detection, although one always needs to correct the measured radiation temperature for the optical thickness and wall reflections.

Studies of broadband temperature fluctuations played an important role in many fusion devices, since they are thought to be related to turbulent transport in magnetically confined plasmas.
The optically thick ECE signal (that is a function of time t) S(t), as measured by each radiometer channel, consists of an average Sav and a fluctuation Sfluct part that are proportional to the average plasma temperature Tav , and to its fluctuating component Tfluct plus the statistical radiation noise (also referred to as: intensity fluctuations, thermal noise, wave noise, or photon noise) N. The radiation noise has nothing to do with the electron temperature and "real" temperature fluctuations:

S(t) = Sav + Sfluct ~ Tav + Tfluct + N

To measure the average amplitude of temperature fluctuations in tokamak plasmas of smaller than 1 - 2%, one needs to get rid of the thermal noise N. This can be achieved by cross-correlation of two ECE signals whose temperature fluctuations are correlated while the noise fluctuations are uncorrelated. One possibility is to observe the same plasma volume from two different directions, another by using two sample volumes that only partly overlap (see Figure below). Mathematically, the correlation between two signals is the measure of the degree to which the two signals are similar. The cross-correlation method does not require ECE signals to be absolutely calibrated.

For two neighbouring channels (radial position r1 ? r2) of a radiometer with a single line of sight, temperature fluctuations are partly correlated if the correlation length of these "true" fluctuations is sufficiently large. The thermal noise is uncorrelated and will not contribute to the fluctuation spectrum. It is possible to choose two separated ECE frequency bands such that the two corresponding radial positions r1 and r2 are still coincident within the natural line width of ECE. In other words, disjoint frequencies are coming from the same sample volume to observe coherent temperature fluctuations.

• Non-thermal electron studies
• Plasma transport properties in presence of MHD modes
• Plasma turbulence and electron temperature fluctuations
• Transport barriers
• Development of microwave diagnostics
• ECRH physics and technology

• V.S. Udintsev, "Electron Temperature Dynamics of TEXTOR Plasmas", ISBN: 90-393-3555-9, University of Utrecht, The Netherlands (2003) (Thesis in pdf)

• M.J. van de Pol, V.S. Udintsev, A.J.H. Donné, A. Krämer-Flecken, B.H. Deng, C.W. Domier, N.C. Luhmann Jr., H.K. Park, E. Mazzucato, "New Electron Cyclotron Emission Diagnostics for the TEXTOR Tokamak", Fusion Eng. and Design 53, 177 (2001) (a paper in pdf)
• V.S. Udintsev, M.J. van de Pol, A.J.H. Donné, A. Krämer-Flecken, J.W. Oosterbeek, "New ECE Diagnostics for the TEXTOR-94 Tokamak", Rev. Sci. Instrum. 72, 359 (2001) (a paper in pdf)
• A.J.H. Donné et al., (among them: V.S. Udintsev), "New Diagnostics for Physics Studies on TEXTOR-94", Rev. Sci. Instrum. 72, 1046 (2001) (a paper in pdf)
• V.S. Udintsev, B.Ph. van Milligen, F.C. Schüller, A. Krämer-Flecken, A.J.H. Donné, J.C. van Gorkom, C.W. Domier and the TEXTOR Team, "Plasma Transport Properties in Presence of MHD Modes Studied by ECE at TEXTOR", Nucl. Fusion 43, 1424 (2003) (a paper in pdf)
• A. Krämer-Flecken, K.H. Finken, V.S. Udintsev, H. Larue and the TEXTOR Team, "Heterodyne ECE Diagnostic in the Mode Detection and Disruption Avoidance at TEXTOR", Nucl. Fusion 43, 1437 (2003) (a paper in pdf)
• E. Westerhof et al., (among them: V.S. Udintsev), "Electron Cyclotron Resonance Heating on TEXTOR", Nucl. Fusion 43, 1371 (2003) (a paper in pdf)
• A.J.H. Donné, J.C. van Gorkom, V.S. Udintsev, C.W. Domier, A. Krämer-Flecken, N.C. Luhmann Jr., F.C. Schüller, and the TEXTOR Team, "Evidence for High-m Secondary Islands Induced by Large Low-m Islands in a Tokamak Plasma", Phys. Rev. Lett. 94, 085001 (2005) (a paper in pdf)
• E. Westerhof et al., (among them: V.S. Udintsev), "Electron Cyclotron Resonance Heating on TEXTOR", Fusion Sci. Technology 47, 108 (2005) (a paper in pdf)
• V.S. Udintsev, M. Ottaviani, P. Maget, G. Giruzzi, J.-L. Ségui, T. Aniel, J.F. Artaud, F. Clairet, M. Goniche, G.T. Hoang, G.T.A. Huysmans, F. Imbeaux, E. Joffrin, D. Mazon, A.L. Pecquet, R. Sabot, A. Sirinelli, L. Vermare, Tore Supra Team, A. Krämer-Flecken, H.R. Koslowski, TEXTOR Team, A.J.H. Donné, F.C. Schüller, C.W. Domier, N.C. Luhmann Jr., S.V. Mirnov, "Experimental Observation of m/n = 1/1 Mode Behaviour During Sawtooth Activity and Its Manifestations in Tokamak Plasmas", Plasma Phys. Control. Fusion 47, 1111 (2005) (a paper in pdf)
• F. Imbeaux, G. Giruzzi, P. Maget, J.-L. Ségui, V.S. Udintsev, J.F. Artaud, D. Elbèze, G. Huysmans, E. Joffrin, D. Mazon, R. Sabot, and A. Sirinelli, "Giant Oscillations of Electron Temperature during Steady-State Operation on Tore Supra", Phys. Rev. Lett. 96, 045004 (2006) (a paper in pdf)
• V.S. Udintsev, M. Goniche, G. Giruzzi, G.T.A. Huysmans, F. Imbeaux, P. Maget, X. Garbet, R. Sabot, J.L. Ségui, F. Turco, T.P. Goodman, D. Molina, H. Weisen, Tore Supra team, "Studies of High Frequency Hot Ion Instabilities by Means of Correlation ECE on Tore Supra", Plasma Phys. Control. Fusion 48, L33 (2006) (a paper in pdf)
• P. Maget, F. Imbeaux, G. Giruzzi, V.S. Udintsev, G.T.A. Huysmans, J.L. Ségui, Ph. Moreau, R. Sabot, X. Garbet, "Temperature Oscillating Regimes in Tore Supra Diagnosed by MHD Activity", Nucl. Fusion 46, 797 (2006) (a paper in pdf)
• V.S. Udintsev, M. Goniche, J.L. Ségui, G. Giruzzi, D. Molina, F. Turco, G.T.A. Huysmans, P. Maget, A. Krämer-Flecken, Tore Supra team, "First Results of Correlation ECE on Tore Supra", Fusion Sci. Technol. 50, 508 (2006) (a paper in pdf )
• S. Coda, E. Asp, E. Fable, T.P. Goodman, O. Sauter, V.S. Udintsev, R. Behn, M.A. Henderson, A. Marinoni, G. Turri, C. Zucca, TCV team, "The physics of electron internal transport barriers in the TCV tokamak", Nucl. Fusion 47, 714 (2007) (a paper in pdf )
• V.S. Udintsev, G. Turri, E. Asp, Ch. Schlatter, T.P. Goodman, O. Sauter, H. Weisen, P. Blanchard, S. Coda, B.P. Duval, E. Fable, A. Gudozhnik, M.A. Henderson, I. Klimanov, X. Llobet, Ph. Marmillod, A. Mueck, L. Porte, H. Shidara, G. Giruzzi, M. Goniche, F. Turco, "Recent Electron Cyclotron Emission Results on TCV", Fusion Sci. Technol. 52, 161 (2007) (a paper in pdf)
• A. Mueck, Y. Camenen, S. Coda, L. Curchod, T. P. Goodman, H. P. Laqua, A. Pochelon, L. Porte, V.S. Udintsev, F. Volpe, TCV Team, "Electron Bernstein Wave Heating and Emission in the TCV Tokamak", Fusion Sci. Technol. 52, 221 (2007) (a paper in pdf)
• T.P. Goodman, V.S. Udintsev, I. Klimanov, A. Mueck, O. Sauter, Ch. Schlatter, "First measurements of oblique ECE with a real-time moveable line-of-sight on TCV", Fusion Sci. Technol., at press (2008)
• M. Goniche, V.S. Udintsev, G.T.A. Huysmans, F. Turco, P. Maget, J.L. Ségui, J.F. Artaud, G. Giruzzi, F.Imbeaux, P. Lotte, D. Mazon, D. Molina, "Identification of Fast Particle Triggered Modes by Means of Correlation ECE on Tore Supra", Fusion Sci. Technol., at press (2008)

• V.S. Udintsev, R. Jaspers, A.J.H. Donné, A. Krämer-Flecken, J.W. Oosterbeek, M.J. van de Pol, E. Westerhof, "Non-thermal Electrons in TEXTOR-94 Tokamak Plasmas", in Proc. of the 27th EPS Conf. on Control. Fusion and Plasma Phys., Budapest, Hungary, Eur. Conf. Abstr. Vol. 24B, 952 (2000) (a paper in pdf)
• V.S. Udintsev, J.C. van Gorkom, A.J.H. Donné, A. Krämer-Flecken, H.J. van der Meiden, J.W. Oosterbeek, M.J. van de Pol, F.C. Schüller, "Large m/n = 2/1 Modes Observation in TEXTOR-94 Plasmas", in Proc. of the 27th EPS Conf. on Control. Fusion and Plasma Phys., Budapest, Hungary, Eur. Conf. Abstr. Vol. 24B, 948 (2000) (a paper in pdf)
• V.S. Udintsev, A. Krämer-Flecken, J.W. Oosterbeek, B.H. Deng, C. Domier, A.J.H. Donné, E. Graffmann, M.J. van de Pol, F.C. Schüller, "Temporal Evolution of Temperature Profiles Inside the Magnetic Islands in TEXTOR-94 Plasmas", in Proc. of the 28th EPS Conf. on Control. Fusion and Plasma Phys., Funchal, Portugal, Eur. Conf. Abstr. Vol. 25A, P1.016 (2001) (a paper in pdf)
• J.C. van Gorkom et al., (among them: V.S. Udintsev), "Density Perturbation by Large MHD Modes in TEXTOR-94", in Proc. of the 28th EPS Conf. on Control. Fusion and Plasma Phys., Funchal, Portugal, Eur. Conf. Abstr. Vol. 25A, P4.018 (2001) (a paper in pdf)
• E. Westerhof et al., (among them: V.S. Udintsev), "Electron Cyclotron Resonance Heating in the Current Ramp-Up Phase of TEXTOR-94", in Proc. of the 28th EPS Conf. on Control. Fusion and Plasma Phys., Funchal, Portugal, Eur. Conf. Abstr. Vol. 25A, P1.014 (2001) (a paper in pdf)
• V.S. Udintsev, B.Ph. van Milligen, F.C. Schüller, A. Krämer-Flecken, B.H. Deng, C. Domier, A.J.H. Donné, J.C. van Gorkom, N.C. Luhmann Jr., "Large and Small Scale MHD Mode Studies at TEXTOR", in Proc. of the 12th Joint Workshop on ECE and ECRH, p. 215 (Aix-en-Provence, France, May 13-16, 2002), edited by G. Giruzzi (World Scientific, Singapore, 2002) (a paper in pdf)
• A. Krämer-Flecken, K.H. Finken, H. Larue, V.S. Udintsev, "Heterodyne ECE Diagnostic in the Mode Detection and Disruptions Avoidance at TEXTOR", in Proc. of the 12th Joint Workshop on ECE and ECRH, p. 197 (Aix-en-Provence, France, May 13-16, 2002), edited by G. Giruzzi (World Scientific, Singapore, 2002) (a paper in pdf)
• E. Westerhof et al., (among them: V.S. Udintsev), "Electron Cyclotron Resonance Heating on TEXTOR: Results from the Preliminary 110 GHz System", in Proc. of the 12th Joint Workshop on ECE and ECRH, p. 215 (Aix-en-Provence, France, May 13-16, 2002), edited by G. Giruzzi (World Scientific, Singapore, 2002) (a paper in pdf)
• V.S. Udintsev, F.C. Schüller, A. Krämer-Flecken,, A.J.H. Donné, C. Domier, "MHD Modes and Electron Temperature Fluctuations Studied by ECE at TEXTOR", Verhandlungen der Deutschen Physicalischen Gesellschaft (Reihe 06), 38, 4, S. 50 (presented at the Spring DPG Meeting, Aachen, Germany, 2003) (link to the abstract)
• V.S. Udintsev, F.C. Schüller, A. Krämer-Flecken, A.J.H. Donné, F. Castejón, C.W. Domier, "Temperature Fluctuation Measurements in TEXTOR", in Proc. of the 30th EPS Conf. on Control. Fusion and Plasma Phys., St.-Petersburg, Russia, Eur. Conf. Abstr. Vol. 27A, P-2.314 (2003) (a paper in pdf)
• J.-L. Ségui, D. Molina, M. Goniche, G.Y. Antar, P. Maget, V.S. Udintsev, A. Krämer-Flecken, "Upgraded ECE Radiometer on the Tore Supra Tokamak", in Proc. of the 13th Joint Workshop on ECE and ECRH (Nizhny Novgorod, Russia, May 17-20, 2004) (a paper in pdf)
• V.S. Udintsev, J.-L. Ségui, M. Ottaviani, G. Giruzzi, P. Maget, T. Aniel, J.F. Artaud, M. Goniche, G. Huysmans, D. Mazon, R. Sabot, A. Sirinelli, L. Vermare, and the Tore Supra Team, "Experimental Observation of MHD Precursor to Sawteeth in Tore Supra", in Proc. of the 31th EPS Conf. on Plasma Phys., London, United Kingdom, Eur. Conf. Abstr. Vol. 28G, P-4.106 (2004) (a paper in pdf)
• V.S. Udintsev, G. Giruzzi, F. Imbeaux, J.-F. Artaud, X. Garbet, G. Huysmans, P. Maget, J.-L. Ségui, A. Bécoulet, G.T. Hoang, E. Joffrin, X. Litaudon, B. Saoutic, and the Tore Supra Team, "Non-linear Temperature Oscillations in the Plasma Centre on Tore Supra and their Interplay with MHD", in Proc. of the 12th International Congress on Plasma Physics (ICPP), Nice, France (2004) (a paper in pdf)
• V.S. Udintsev, M. Goniche, J.-L. Ségui, G.Y. Antar, D. Molina, G. Giruzzi, A. Krämer-Flecken, The Tore Supra Team, "First Measurements of Electron Temperature Fluctuations by Correlation ECE on Tore Supra", in Proc. of the 12th International Congress on Plasma Physics (ICPP), Nice, France (2004) (a paper in pdf)
• F. Imbeaux, G. Giruzzi, J.F. Artaud, X. Garbet, G. Huysmans, P. Maget, J.-L. Ségui, V.S. Udintsev, A. Bécoulet, G.T. Hoang, E. Joffrin, X. Litaudon, B. Saoutic, the Tore Supra Team, "Non-linear electron temperature oscillations on Tore Supra: experimental observations and modelling by the CRONOS code", in Proc. of the 20th IAEA Fusion Energy Conference, Vilamoura, Portugal (2004) (a paper in pdf)
• V.S. Udintsev, M. Goniche, J.-L. Ségui, G. Giruzzi, D. Molina, G.T.A. Huysmans, P. Maget, F. Imbeaux, A. Krämer-Flecken, R. Sabot, A. Sirinelli, and the Tore Supra Team, "Electron Temperature Fluctuation Studies in Different Confinement Regimes by Means of Correlation ECE on Tore Supra", in Proc. of the 32th EPS Conf. on Plasma Phys., Tarragona, Spain, Eur. Conf. Abstr. Vol. 29C, P-1.037 (2005) (a paper in pdf)
• F. Imbeaux, P. Maget, G. Giruzzi, J.-L. Ségui, V.S. Udintsev, G. Huysmans, J.F. Artaud, J. Bucalossi, D. Elbèze, X. Garbet, G.T. Hoang, E. Joffrin, X. Litaudon, P. Lotte, D. Mazon, P. Moreau, Y. Peysson, R. Sabot, A. Sirinelli, and the Tore Supra Team, "Giant Oscillations of Electron Temperature during Zero Loop Voltage Discharges on Tore Supra", in Proc. of the 32th EPS Conf. on Plasma Phys., Tarragona, Spain, Eur. Conf. Abstr. Vol. 29C, P-1.034 (2005) (a paper in pdf)
• P. Maget, G.T.A. Huysmans, G. Giruzzi, F. Imbeaux, X. Garbet, J.-L. Ségui, V.S. Udintsev, V. Basiuk, D. Mazon, Ph. Moreau, Y. Peysson, "First Observation of Electron Fishbones Associated to the Double-Kink Mode in Tore Supra", in Proc. of the 32th EPS Conf. on Plasma Phys., Tarragona, Spain, Eur. Conf. Abstr. Vol. 29C, O-2.002 (2005) (a paper in pdf)
• V.S. Udintsev, I. Klimanov, P. Blanchard, H. Weisen, L. Porte, S. Coda, T.P. Goodman, O. Sauter, G.P. Turri, S. Alberti, B.P. Duval, E. Fable, D. Fasel, A. Fasoli, A. Gudozhnik, M.A. Henderson, J.-Ph. Hogge, Ph. Marmillod, K.R. Mason, A. Mueck, R. Patterson, R.A. Pitts, A. Pochelon, Ch. Schlatter, and the TCV Team, "Progress in ECE Diagnostics Development on TCV", in Proc. of the 14th Joint Workshop on ECE and ECRH, Santorini, Greece, May 9-12 (2006) (a paper in pdf)
• T.P. Goodman, I. Klimanov, A. Mueck, V.S. Udintsev, O. Sauter, TCV Team, "First Measurements of Oblique ECE with a Real-Time Moveable Line-of-Sight on TCV ", in Proc. of the 14th Joint Workshop on ECE and ECRH, Santorini, Greece, May 9-12 (2006) (a paper in pdf)
• V.S. Udintsev, T.P. Goodman, G. Turri, O. Sauter, E. Asp, S. Coda, E. Fable, I. Klimanov, A. Mueck, R. Patterson, A. Pochelon, H. Weisen, G. Giruzzi, F. Turco, TCV Team, "Oscillations of Electron Temperature and Their Interplay with MHD in the Presence of Internal Transport Barriers on TCV", in Proc. of the 33rd EPS Conf. on Plasma Phys., Rome, Italy, Eur. Conf. Abstr. Vol. 30I, D1.003 (2006) (a paper in pdf)
• G. Turri, O. Sauter, A. Scarabosio, V.S. Udintsev, I. Furno, C. Zucca, T.P. Goodman, "Towards q-profile Reconstruction Through Fast-MHD Analysis on TCV", in Proc. of the 33rd EPS Conf. on Plasma Phys., Rome, Italy, Eur. Conf. Abstr. Vol. 30I, P1.148 (2006) (a paper in pdf)
• A. Mueck, Y. Camenen, S. Coda, L. Curchod, T.P. Goodman, H.P. Laqua, K. Mason, R. Patterson, A. Pochelon, L. Porte, V.S. Udintsev, "Electron Bernstein Wave Heating and Emission in the TCV Tokamak", in Proc. of the 33rd EPS Conf. on Plasma Phys., Rome, Italy, Eur. Conf. Abstr. Vol. 30I, P1.153 (2006) (a paper in pdf)
• Ch. Schlatter, B.P. Duval, A.N. Karpushov, E. Asp, S. Coda, V.S. Udintsev, "Conditions for Anomalous Energy and Momentum Transfer from Electrons to Ions in ECCD Discharges on TCV", in Proc. of the 33rd EPS Conf. on Plasma Phys., Rome, Italy, Eur. Conf. Abstr. Vol. 30I, P1.149 (2006) (a paper in pdf)
• E. Asp, O. Sauter, S. Coda, E. Fable, T.P. Goodman, G. Turri, V.S. Udintsev, C. Zucca, "On the ECCD current density profile with particle diffusion in eITBs and its impact on the q-profile",  in Proc. of the Joint Varenna-Lausanne International Workshop, AIP Conference Proceedings, Volume 871, pp. 283 - 191 (2006) (a paper in pdf )
• Coda S., Asp E., Fable E., Goodman T.P., Sauter O., Udintsev V.S., Behn R., Henderson M.A., Marinoni A., Turri G.P., Zucca C., TCV team, "The Physics of Electron Internal Transport Barriers in the TCV Tokamak", in Proc. of the 21st IAEA Fusion Energy Conference, Chengdu, China (2006) (a paper in pdf )
• A. Pochelon, A. Mueck, Y. Camenen, S. Coda, L. Curchod, B.P. Duval, T.P. Goodman, I. Klimanov, H. Laqua, Y. Martin, J.-M. Moret, L. Porte, A. Sushkov, V.S. Udintsev, F. Volpe, the TCV Team, "Electron Bernstein Wave Heating of Overdense H-mode Plasmas in the TCV Tokamak via O-X-B Double Mode Conversion", in Proc. of the 21st IAEA Fusion Energy Conference, Chengdu, China (2006) (a paper in pdf )
• M.A. Henderson, R. Chavan, R. Bertizzolo, A Bruschi, D. Campbell, E Ciattaglia, S Cirant, I Danilov, F. Dolizy, D. Farina, R Heidinger, K Kleefeldt, J.-D. Landis, A. Moro, E. Poli, G. Ramponi, G. Saibene, O. Sauter, A Serikov, H. Shidara, P. Spaeh, V.S. Udintsev, H. Zohm, C. Zucca, "The ITER ECH FS Upper Launcher mm-wave Design based on a Synergy Study with the Equatorial Launcher", in Proc. of the 21st IAEA Fusion Energy Conference, Chengdu, China (2006) (a paper in pdf )
• P. Maget, F. Imbeaux, G. Giruzzi, V.S. Udintsev, G.T.A. Huysmans, H. Lütjens, J.-L. Ségui, M. Goniche, Ph. Moreau, R. Sabot, X. Garbet, "MHD issues in Tore Supra steady-state fully non-inductive scenario", in Proc. of the 21st IAEA Fusion Energy Conference, Chengdu, China (2006) (a paper in pdf )
• M.A. Henderson, R.Chavan, R. Bertizzolo, A. Bruschi, S. Criant, J. Duron, D. Farina, R. Heidinger, J-D. Landis, E. Poli, G. Ramponi, G. Saibene, O. Sauter, H. Shidara, V.S. Udintsev, H. Zohm, C. Zucca, "The Enhanced Performance Launcher Design For The ITER Upper Port ECH Antenna", in Proc. of the 17th Topical Conference on Radio Frequency Power in Plasmas in Clearwater, Florida, USA (2007)
• G. Turri, O. Sauter, E. Asp, T.P. Goodman, A. Martynov, S.Yu. Medvedev, V.S. Udintsev, C. Zucca, G. Zhuang, "MHD detrimental effect on the confinement during flat-top eITB plasmas on TCV", in Proc. of the 5th IAEA TM on Steady State Operations of Magnetic Fusion Devices in Daejeon, Korea (2007)
• M.A. Henderson, R. Chavan, R. Bertizzolo, A. Bruschi, D. Campbell, S. Cirant, A. Collazos, I. Danilov, F. Dolizy, J. Duron, D. Farina, K. Kleefeldt, R. Heidinger, J.-D. Landis, E. Poli, G. Ramponi, G. Saibene, F. Sanchez, O. Sauter, A. Serikov, H. Shidara, V.S. Udintsev, H. Zohm, C. Zucca, "Design Status of the ITER Upper Port Launcher", in Proc. of the 4th IAEA Technical Meeting on ECRH Physics and Technology for ITER in IAEA Headquarters, Vienna, Austria (2007)
• V.S. Udintsev, E. Asp, O. Sauter, H. Shidara, F. Turco, G. Turri, S. Coda, G. Falchetto, T.P. Goodman, X. Llobet, T.I. Madeira, Ph. Marmillod, H. Weisen, "Control of the Oscillatory Regime by Local Current Perturbation in ECCD Plasmas on TCV", in Proc. of the 34th EPS Conf. on Plasma Phys., Warsaw, Poland, P1.084 (2007) (a paper in pdf)
• T.P. Goodman, V.S. Udintsev, F. Felici, C. Zucca, Ch. Schlatter, "Co- and Counter–viewing Oblique ECE Measurements during ECH and ECCD on the TCV Tokamak", in Proc. of the 34th EPS Conf. on Plasma Phys., Warsaw, Poland (2007) (a paper in pdf)
• L. Curchod, A. Mueck, A. Pochelon, R. Behn, S. Coda, T.P. Goodman, H.P. Laqua, J.-M. Moret, I. Pavlov, L. Porte, V.S. Udintsev, TCV Team, "Optimizing Central Electron Bernstein Wave Deposition via O-X-B Double Mode Conversion in the TCV Tokamak", in Proc. of the 34th EPS Conf. on Plasma Phys., Warsaw, Poland (2007) (a paper in pdf)

• V.S. Udintsev, A.J.H. Donné, R. Jaspers, A. Krämer-Flecken, E. Westerhof, "Electron Cyclotron Emission Measurements and Simulations for TEXTOR-94 Tokamak Plasmas", Poster Presentation at the Fourth Carolus Magnus Summer School on Plasma Physics, Maastricht, The Netherlands (1999)
• V.S. Udintsev, A.J.H. Donné, J.W.Oosterbeek, M.J. van de Pol, E.Westerhof, "Suprathermal Electron Studies in TEXTOR-94 Plasmas", Oral Presentation at the 13th CPS Symposium, Lunteren, The Netherlands (March 2000)
• V.S. Udintsev,"Non-thermal Electron Studies in TEXTOR-94 Tokamak", Oral Presentation at JET Friday Meeting, JET, Culham, UK (December 2000)
• V.S. Udintsev, A.J.H. Donné, E. Graffmann, A. Krämer-Flecken, M. Zerbini, "Overview of Non-thermal Electron Studies at TEXTOR-94 and JET", Poster Presentation at the 14th CPS Symposium, Lunteren, The Netherlands (February 2001)
• V.S. Udintsev, A. Krämer-Flecken, "Comparison of Thomson Scattering and ECE Data in TEXTOR-94", Oral Presentations at the TEXTOR seminar, Jülich, Germany (November 26th, 2001), and at the CIEMAT seminar, Madrid, Spain (January 2002)
• V.S. Udintsev et al.,, "MHD Modes and Electron Temperature Fluctuations Studied by ECE at TEXTOR tokamak", Oral Presentation at the DRFC/CEA Cadarache Seminar, France (April 2003)
• V.S. Udintsev, "Progress in MHD Studies at TEXTOR", Oral Presentation at the FOM Rijnhuizen Seminar, Nieuwegein, The Netherlands (November 20th, 2003)
• V.S. Udintsev, "On Topology of m/n = 1/1 Precursor to Sawtooth Crash and Temperature Fluctuations Around q = 1 Surface", Oral Presentation at the Réunion Scientifique et Technique, DRFC/CEA Cadarache, France (January 26th, 2004)
• V.S. Udintsev, "Non-linear Temperature Oscillations in the Plasma Centre on Tore Supra and their Interplay with MHD", Oral Presentation at the Réunion Scientifique et Technique, DRFC/CEA Cadarache, France (October 15th, 2004)
• V.S. Udintsev et al.,"Progress in Measurements of Electron Temperature Fluctuations on Tore Supra", Oral Presentation at the Réunion Scientifique et Technique, DRFC/CEA Cadarache, France (December 13th, 2004)
• V.S. Udintsev et al.,"Progress in Studies of Non-linear Temperature Oscillations in the Plasma Core and their Interplay with MHD on Tore Supra ", Oral Presentation at the EPFL/CRPP Seminar, Lausanne, Switzerland (February 7th, 2005)
• V.S. Udintsev, M. Goniche, J.-L. Ségui, G. Giruzzi, D. Molina et al.,"Correlation ECE on Tore Supra: New Results and Future Prospects", Oral Presentation at the Réunion Scientifique et Technique, DRFC/CEA Cadarache, France (May 23rd, 2005)
• V.S. Udintsev, M. Goniche, J.-L. Ségui, G. Giruzzi, D. Molina et al.,"Correlation ECE on Tore Supra: Recent Results and Future Prospects", Oral Presentation at the EPFL/CRPP Seminar, Lausanne, Switzerland (June 13th, 2005)
• V.S. Udintsev et al.,"Correlation ECE on TCV: Principles and Possibilities", Oral Presentation at the Réunion Scientifique TCV, EPFL/CRPP, Lausanne, Switzerland (September 14th, 2005)
• V.S. Udintsev et al.,"Oscillations of Electron Temperature and Their Interplay with MHD in the Presence of Internal Transport Barriers Studied by ECE on TCV", Oral Presentation at the Réunion Scientifique TCV, EPFL/CRPP, Lausanne, Switzerland (April 5th, 2006)
• V.S. Udintsev et al.,"Temperature Oscillations and MHD on TCV: Past Results and Future Aims", Oral Presentation at the Réunion Scientifique TCV, EPFL/CRPP, Lausanne, Switzerland (September 14th, 2006)
• V.S. Udintsev et al.,"Temperature Oscillations on TCV: How Far Did We Get in 2006", Oral Presentation at the Réunion Scientifique TCV, EPFL/CRPP, Lausanne, Switzerland (November 11th, 2006)
• V.S. Udintsev et al.,"Temperature Oscillations on TCV: Sub-Missions 621/623 on November 14, 2006", Oral Presentation at the Réunion Scientifique TCV, EPFL/CRPP, Lausanne, Switzerland (November 20th, 2006)
• V.S. Udintsev et al.,"First Measurements of Electron Temperature Fluctuations by Means of Correlation ECE on TCV", Oral Presentation at the Réunion Scientifique TCV, EPFL/CRPP, Lausanne, Switzerland (January 15th, 2007)
• V.S. Udintsev et al.,"Mission 623 experiment on 17.01.2007", Oral Presentation at the Réunion Scientifique TCV, EPFL/CRPP, Lausanne, Switzerland (January 22nd, 2007)
• V.S. Udintsev et al.,"Mise a jour: ECE/correlation ECE", Oral Presentation at the Réunion Scientifique TCV, EPFL/CRPP, Lausanne, Switzerland (January 29th, 2007)
• V.S. Udintsev et al.,"Broadband temperature fluctuations in sawtoothing plasmas on TCV", Oral Presentation at the Réunion Scientifique TCV, EPFL/CRPP, Lausanne, Switzerland (February 4th, 2007)
• V.S. Udintsev et al.,"NOTEC Code to Simulate ECE spectra", Oral Presentation at the Réunion Scientifique TCV, EPFL/CRPP, Lausanne, Switzerland (February 26th, 2007)
• V.S. Udintsev et al.,"New LFS ECE radiometer for TCV: a project ", Oral Presentation at the Réunion Scientifique TCV, EPFL/CRPP, Lausanne, Switzerland (April 2nd, 2007)
• V.S. Udintsev et al.,"Oscillations of the Plasma Current and Electron Temperature in ECCD plasmas on TCV ", Oral Presentation at the Réunion Scientifique et Technique, DRFC/CEA Cadarache, France (April 25th, 2007)

NOTE: Only the most important publications and presentations are given.

• EPFL/CRPP, Switzerland

• (My Scientific Page at EPFL/CRPP, Switzerland)

• CEA/Cadarache, France

• FOM Institute for Plasma Physics Rijnhuizen, The Netherlands

• Forschungszentrum Jülich, Germany

• EFDA/JET, UK

• CIEMAT para Fusión, Spain

• Russian Research Centre Kurchatov Institute, Russian Federation

• ITER in Cadarache

• Nuclear Fusion

• Physics of Plasmas

• Physical Review Letters

• Plasma Physics and Controlled Fusion

• Review of Scientific Instruments

• Fusion Science and Technology

• Fusion Engineering and Design

Back to the main page

The Guestbook