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382 results on '"Tran, M. Q."'

51. The use of high-order TM0m0 modes of a resonant cavity for magnetized plasma density measurements.

Author

Paris, P. J., Sawley, M. L., Tran, M. Q., and Voser, K.

Subjects
PLASMA density, RESONANCE, INTERFEROMETRY
Abstract

Reports on the application of high-order modes of a resonant cavity for magnetized plasma density measurements. Comparison between densities and microwave interferometry; Application of a resonant cavity to the measurement of plasma density; Schematic diagram of the high frequency resonant cavity.

Published
1990
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53. Experimental considerations concerning the velocity measurement of the relativistic electron beam in a gyrotron by means of Thomson scattering.

Author

Siegrist, M. R., Soumagne, G., and Tran, M. Q.

Subjects
THOMSON scattering, ELECTRON beams, SPECTRUM analysis, ELECTROMAGNETIC waves
Abstract

Presents a study which analyzed the feasibility of Thomson scattering to determine the beam velocity in a gyrotron. Measurement of the electron beam velocity; Illustration of the conditions for an arbitrary scattering geometry; Discussion on the different scattering arrangements used; Review of a study on the spectrum of electromagnetic radiation scattered by a strongly relativistic electron beam; Description of spectra for the case of right-angle scattering.

Published
1993
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54. The science program of the TCV tokamak: exploring fusion reactor and power plant concepts

Author

Coda, S., Albanese, R., Alberti, S., Ambrosino, R., Anand, H., Andrebe, Y., Ariola, M., Barton, J. E., Behn, R., Blanchard, P., Boedo, J. A., Bortolon, A., Braunmüller, F. H., Brémond, S., Brunner, S., Camenen, Y., Canal, G. P., Cooper, W. A., Cruz, N., De Baar, M., Decker, J., De Meijere, C. A., Duval, B. P., Fasoli, A., Federspiel, L., Felici, F., Fontana, M., Furno, I., Galperti, C., Garrido, I., Genoud, J., Goodman, T. P., Graves, J. P., Hennequin, P., Hogge, J. -Ph., Hommen, G., Huang, Z., Joye, B., Kamleitner, J., Karpushov, A., Kim, D., Kirneva, N., Krämer-Flecken, A., Labit, B., Lazzaro, E., Le, H. B., Lefevre, L., Li, F., Lipschultz, B., Lister, J. B., Llobet, X., Lunt, T., Malygin, A., Maljaars, E., Marini, C., Martin, Y., Mattei, M., Merle, A., Molina Cabrera, P. A., Moreau, D., Moret, J. -M., Morgan, T., Mustafin, N. A., Nespoli, F., Nouailletas, R., Nowak, S., Peysson, Y., Pironti, A., Pochelon, A., Porte, L., Reimerdes, H., Sauter, O., Schlatter, Ch., Schuster, E., Silva, M., Sinha, J., Stoltzfus-Dueck, T., Tál, B., Teplukhina, A. A., Testa, D., Theiler, C., Tonetti, G., Tran, M. Q., Tsui, C., Vermare, L., Vernay, T., Vijvers, W. A. J., Vu, N. M. T., Vuille, V., Weisen, H., Wenninger, R., Witrant, E., Laboratoire de Physique des Plasmas (LPP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École polytechnique (X)-Sorbonne Université (SU)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Coda, S., Albanese, R., Alberti, S., Ambrosino, R., Anand, H., Andrebe, Y., Ariola, M., Barton, J. E., Behn, R., Blanchard, P., Boedo, J. A., Bortolon, A., Braunmüller, F. H., Brémond, S., Brunner, S., Camenen, Y., Canal, G. P., Cooper, W. A., Cruz, N., De Baar, M., Decker, J., De Meijere, C. A., Duval, B. P., Fasoli, A., Federspiel, L., Felici, F., Fontana, M., Furno, I., Galperti, C., Garrido, I., Genoud, J., Goodman, T. P., Graves, J. P., Hennequin, P., Hogge, J. -Ph., Hommen, G., Huang, Z., Joye, B., Kamleitner, J., Karpushov, A., Kim, D., Kirneva, N., Krämer-Flecken, A., Labit, B., Lazzaro, E., Le, H. B., Lefevre, L., Li, F., Lipschultz, B., Lister, J. B., Llobet, X., Lunt, T., Malygin, A., Maljaars, E., Marini, C., Martin, Y., Mattei, M., Merle, A., Molina Cabrera, P. A., Moreau, D., Moret, J. -M., Morgan, T., Mustafin, N. A., Nespoli, F., Nouailletas, R., Nowak, S., Peysson, Y., Pironti, A., Pochelon, A., Porte, L., Reimerdes, H., Sauter, O., Schlatter, Ch., Schuster, E., Silva, M., Sinha, J., Stoltzfus-Dueck, T., Tál, B., Teplukhina, A. A., Testa, D., Theiler, C., Tonetti, G., Tran, M. Q., Tsui, C., Vermare, L., Vernay, T., Vijvers, W. A. J., Vu, N. M. T., Vuille, V., Weisen, H., Wenninger, R., Witrant, E., Hogge, J. P. h., Krämer Flecken, A., Mattei, Massimiliano, Moret, J. M., Schlatter, C. h., Stoltzfus Dueck, T., and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École polytechnique (X)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)

Subjects
Nuclear and High Energy Physics, Tokamak, DEMO, ITER, nuclear fusion, plasma, TCV, tokamak, Condensed Matter Physics, Cyclotron, Condensed Matter Physic, 7. Clean energy, Electron cyclotron resonance, law.invention, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], Physics::Plasma Physics, law, Physics, Toroid, Divertor, Plasma, Fusion power, Computational physics, Heat flux, Atomic physics
Abstract

International audience; TCV is acquiring a new 1 MW neutral beam and 2 MW additional third-harmonic electron cyclotron resonance heating (ECRH) to expand its operational range. Its existing shaping and ECRH launching versatility was amply exploited in an eclectic 2013 campaign. A new sub-ms real-time equilibrium reconstruction code was used in ECRH control of NTMs and in a prototype shape controller. The detection of visible light from the plasma boundary was also successfully used in a position-control algorithm. A new bang-bang controller improved stability against vertical displacements. The RAPTOR real-time transport simulator was employed to control the current density profile using electron cyclotron current drive. Shot-by-shot internal inductance optimization was demonstrated by iterative learning control of the current reference trace. Systematic studies of suprathermal electrons and ions in the presence of ECRH were performed. The L?H threshold power was measured to be ?50?75% higher in both H and He than D, to increase with the length of the outer separatrix, and to be independent of the current ramp rate. Core turbulence was found to decrease from positive to negative edge triangularity deep into the core. The geodesic acoustic mode was studied with multiple diagnostics, and its axisymmetry was confirmed by a full toroidal mapping of its magnetic component. A new theory predicting a toroidal rotation component at the plasma edge, driven by inhomogeneous transport and geodesic curvature, was tested successfully. A new high-confinement mode (IN-mode) was found with an edge barrier in density but not in temperature. The edge gradients were found to govern the scaling of confinement with current, power, density and triangularity. The dynamical interplay of confinement and magnetohydrodynamic modes leading to the density limit in TCV was documented. The heat flux profile decay lengths and heat load profile on the wall were documented in limited plasmas. In the snowflake (SF) divertor configuration the heat flux profiles were documented on all four strike points. SF simulations with the EMC3-EIRENE code, including the physics of the secondary separatrix, underestimate the flux to the secondary strike points, possibly resulting from steady-state E × B drifts. With neon injection, radiation in a SF was 15% higher than in a conventional divertor. The novel triple-null and X-divertor configurations were also achieved in TCV.

Published
2015

56. Status and experimental results of the European 1 MW, 170 GHz industrial CW prototype Gyrotron for ITER

Author

Hogge, J.-P., primary, Albajar, F., additional, Alberti, S., additional, Avramidis, K., additional, Bin, W., additional, Bonicelli, T., additional, Braunmueller, F., additional, Bruschi, A., additional, Chelis, J., additional, Frigot, P.-E., additional, Gantenbein, G., additional, Hermann, V., additional, Illy, S., additional, Ioannidis, Z. C., additional, Jelonnek, J., additional, Jin, J., additional, Kasparek, W., additional, Kobarg, T., additional, Latsas, G. P., additional, Lechte, C., additional, Lontano, M., additional, Losert, M., additional, Pagonakis, I. G., additional, Rozier, Y., additional, Rzesnicki, T., additional, Schlatter, C., additional, Schmid, M., additional, Thumm, M., additional, Tigelis, I. G., additional, Tran, M. Q., additional, Vomvoridis, J. L., additional, and Zisis, A. I., additional

Published
2016
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57. Progress on the upgrade of the TCV EC-system with two 1MW dual-frequency gyrotrons

Author

Alberti, S., primary, Genoud, J., additional, Goodman, T., additional, Hogge, J.-P., additional, Silva, M., additional, Tran, T. M., additional, Tran, M. Q., additional, Avramidis, K., additional, Pagonakis, I. Gr., additional, Jin, J., additional, Illy, S., additional, Gantenbein, G., additional, Jelonnek, J., additional, Thumm, M., additional, Bin, W., additional, Garavaglia, S., additional, Moro, A., additional, Hermann, V., additional, Legrand, F., additional, and Rozier, Y., additional

Published
2016
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60. Numerical Simulation of the RF Plasma Discharge in the Linac4 H- Ion Source.

Author

Mattei, S., Nishida, K., Onai, M., Lettry, J., Tran, M. Q., and Hatayama, A.

Subjects
PLASMA flow, HYDROGEN ions, RADIO frequency discharges, ION sources, PLASMA collision processes, ELECTROMAGNETIC fields
Abstract

This paper presents a Particle-In-Cell Monte Carlo Collision simulation of the Radio-Frequency (RF) plasma heating in the Linac4 H- ion source at CERN. The model self-consistently takes into account the electromagnetic field generated by the RF coil, the external static magnetic fields and the resulting plasma response, including a kinetic description of the charged species (e-, H+, H2+, H3+, H-), as well as the atomic and molecular (vibrationally resolved) populations. The simulation is performed for the nominal operational condition of 40 kW RF power and 3 Pa H2 pressure. Results show that the plasma spatial distribution is non-uniform in the plasma chamber, with a density peak of ne = 5 · 1019 m-3 in the RF coil region. In the filter field region the electron density drops by two orders of magnitude, with a substantial reduction of the electron energy as well. This results in a ratio e/H- ≈ 1 in the extraction region. The vibrational population is characterized by a two temperature distribution, with the high vibrational states showing a factor 2 higher termperature. A very good agreement is found between the simulation results and optical emission spectroscopy measurement performed on a dedicated test stand at CERN. [ABSTRACT FROM AUTHOR]

Published
2017
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67. First experimental results from the European union 2-MW coaxial cavity ITER gyrotron prototype

Author

Hogge J. P., Goodman T. P., Alberti S., Albajar F., Avramides K. A., Benin P., Bethuys S., Bin W., Bonicelli T., Bruschi A., Cirant S., Droz E., Dumbrajs O., Fasel D., Gandini F., Gantenbein G., Illy S., Jawla S., Jin J., Kern S., Lavanchy P., Liévin C., Marletaz, Marmillod P., Perez A., Piosczyk B., Pagonakis I., Porte L., Rzesnickl T., Siravo U., Thumm M., and Tran M. Q.

Subjects
high-power microwave sources, ITER, gyrotrons
Abstract

The European Union is working toward providing 2-MW, coaxial-cavity, continuous-wave (cw) 170-GHz gyrotrons for ITER. Their design is based on results,from an experimental preprototype tube having a pulse length of several milliseconds, in operation at Forschungszentrum Karlsruhe (FZK) for several years now. The first industrial prototype tube was designed for cw operation but, in a first phase, aimed at a pulse length of 1 s at the European Gyrotron Test Facility in Lausanne, Switzerland, as part of a phased testing/development program. (1 s, 60 s, cw). The first experimental results of the operation of this prototype gyrotron are reported here. The microwave generation was characterized at very short pulse length (

Published
2009

68. REVIEW OF THE EUROPEAN PROGRAMME FOR THE DEVELOPMENT OF THE GYROTRON FOR ITER

Author

Albajar, F. Bonicelli, T. Saibene, G. Alberti, S. Fasel, D. Goodman, T. Hogge, J-P. Pagonakis, I. Porte, L. and Tran, M. Q. Avramides, K. Vomvoridis, J. Claesen, R. and Santinelli, M. Dumbrajs, O. Gantenbein, G. Kern, S. and Illy, S. Jin, J. Piosczyk, B. Rzesnicki, T. Thumm, M. and Henderson, M. Cirant, S. Latsas, G. Tigelis, I.

Abstract

The EU programme for the development of the gyrotron for ITER, carried out in cooperation between European laboratories and industrial partners, consists of (i) the manufacturing and testing the 2 MW, CW coaxial cavity gyrotron at 170 GHz meeting both technological constraints and ITER specifications. This goal will be conducted in three different steps: 1 s, 60 s and CW; (ii) in parallel, the development and improvement of critical components for the coaxial concept will continue. While the coaxial concept provides substantial advantages in terms of cost and EC power available for the ITER system with respect to the I MW cylindrical cavity gyrotron, the development programme entails additional risks due to both the relatively tight schedule and the developments still required. A fall back option consisting in a more traditional I MW gyrotron is foreseen in case of major difficulties in the development of the 2 MW coaxial cavity gyrotron. This alternative development is expected to benefit from the successful development of the 140 GHz gyrotron for W7-X; (iii) a Test Facility for testing at high power, CW the prototype gyrotrons and other EC H&CD system components has been established at the CRPP, in Lausanne. The tests with the first prototype of coaxial gyrotron are currently progressing. A decision point between the coaxial and cylindrical cavity concept is expected by the end of 2009 when the tests with the first and refurbished prototype will be available.

Published
2009

69. Design of electron cyclotron heating and current drive system of ITER

Author

Kobayashi N., Bigelow T., Bonicelli T., Cirant S., Denisov G., Heidinger R., Henderson M., Hogge J.-P., Piosczyk B., Ramponi G., Rao S. L., Rasmussen D., Saibene G., Sakamoto K., Takahashi K., Temkin R. J., Thumm M., Tran M. Q., Verhoeven A., and Zohm H.

Subjects
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Abstract

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Published
2007

74. Progress on the development of the EU-1 MW gyrotron for ITER

Author

Illy, S., primary, Avramidis, K., additional, Gantenbein, G., additional, Hesch, K., additional, Jelonnek, J., additional, Jin, J., additional, Pagonakis, I., additional, Piosczyk, B., additional, Rzesnicki, T., additional, Thumm, M., additional, Alberti, S., additional, Hogge, J.-P., additional, Tran, M. Q., additional, Hermann, V., additional, Legrand, F., additional, Rozier, Y., additional, Vomvoridis, J. L., additional, Chelis, J., additional, Ioannidis, Z. C., additional, Latsas, G. P., additional, Tigelis, I. G., additional, Albajar, F., additional, Bonicelli, T., additional, and Cismondi, F., additional

Published
2014
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81. From series production of gyrotrons for W7-X towards EU-1 MW gyrotrons for ITER

Author

Jelonnek, J., primary, Gantenbein, G., additional, Hesch, K., additional, Jin, J., additional, Pagonakis, I., additional, Piosczyk, B., additional, Rzesnicki, T., additional, Thumm, M., additional, Alberti, S., additional, Hogge, J.-P., additional, Tran, M. Q., additional, Erckmann, V., additional, Laqua, H., additional, Michel, G., additional, Benin, P., additional, Legrand, F., additional, Rozier, Y., additional, Avramidis, K., additional, Vomvoridis, J. L., additional, Ioannidis, Z. C., additional, Latsas, G. P., additional, Tigelis, I. G., additional, Albajar, F., additional, Bonicelli, T., additional, and Cismondi, F., additional

Published
2013
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82. Design of the EU-1MW gyrotron for ITER

Author

Pagonakis, I. Gr., primary, Gantenbein, G., additional, Jelonnek, J., additional, Jin, J., additional, Illy, S., additional, Kern, S., additional, Piosczyk, B., additional, Rzesnicki, T., additional, Thumm, M., additional, Avramides, K. A., additional, Vomvoridis, J. L., additional, Dumbrajs, O., additional, Benin, P., additional, Rozier, Y., additional, Alberti, S., additional, Hogge, J.-P., additional, Schlatter, C., additional, Tran, M.-Q., additional, Bruschi, A., additional, Lontano, M., additional, Ioannidis, Z. C., additional, Latsas, G. P., additional, Tigelis, I. G., additional, Albajar, F., additional, Bonicelli, T., additional, and Cismondi, F., additional

Published
2013
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83. Manufacturing of a 263 GHz continuously tunable gyrotron

Author

Rozier, Y., primary, Legrand, F., additional, Lievin, C., additional, Racamier, J.-C., additional, Marchesin, R., additional, Alberti, S., additional, Braunmueller, F., additional, Hogge, J.-Ph., additional, da Silva, M., additional, Tran, M. Q., additional, Tran, T. M., additional, and Macor, A., additional

Published
2013
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84. Experimental study from linear to chaotic regimes on a terahertz-frequency gyrotron oscillator

Author

Alberti, S., primary, Ansermet, J.-Ph., additional, Avramides, K. A., additional, Braunmueller, F., additional, Cuanillon, P., additional, Dubray, J., additional, Fasel, D., additional, Hogge, J.-Ph., additional, Macor, A., additional, de Rijk, E., additional, da Silva, M., additional, Tran, M. Q., additional, Tran, T. M., additional, and Vuillemin, Q., additional

Published
2012
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85. EU gyrotron development for ITER: Recent achievements and experimental results of the coaxial 2 MW gyrotron

Author

Kern, S., primary, Gantenbein, G., additional, Illy, S., additional, Jelonnek, J., additional, Jin, J., additional, Pagonakis, I., additional, Piosczyk, B., additional, Rzesnicki, T., additional, Thumm, M., additional, Hogge, J., additional, Alberti, S., additional, Li, F., additional, Tran, M. Q., additional, Avramides, K., additional, and Tigelisa, I., additional

Published
2012
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88. An overview of the ITER electron cyclotron H&CD system

Author

Henderson, M., primary, Albajar, F., additional, Alberti, S., additional, Baruah, U., additional, Bigelow, T., additional, Becket, B., additional, Bertizzolo, R., additional, Bonicelli, T., additional, Bruschi, A., additional, Caughman, J., additional, Chavan, R., additional, Cirant, S., additional, Collazos, A., additional, Darbos, C., additional, de Baar, M., additional, Denisov, G., additional, Farina, D., additional, Gandini, F., additional, Gassman, T., additional, Goodman, T. P., additional, Heidinger, R., additional, Hogge, J. P., additional, Jean, O., additional, Kajiwara, K., additional, Kasparek, W., additional, Kasugai, A., additional, Kern, S., additional, Kobayashi, N., additional, Landis, J. D., additional, Moro, A., additional, Nazare, C., additional, Oda, J., additional, Paganakis, I., additional, Platania, P., additional, Plaum, B., additional, Poli, E., additional, Porte, L., additional, Piosczyk, B., additional, Ramponi, G., additional, Rao, S. L., additional, Rasmussen, D., additional, Ronden, D., additional, Saibene, G., additional, Sakamoto, K., additional, Sanchez, F., additional, Scherer, T., additional, Shapiro, M., additional, Sozzi, C., additional, Spaeh, P., additional, Straus, D., additional, Sauter, O., additional, Takahashi, K., additional, Tanga, A., additional, Temkin, R., additional, Thumm, M., additional, Tran, M. Q., additional, Zohm, H., additional, and Zucca, C., additional

Published
2009
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89. REVIEW OF THE EUROPEAN PROGRAMME FOR THE DEVELOPMENT OF THE GYROTRON FOR ITER

Author

ALBAJAR, F., primary, BONICELLI, T., additional, SAIBENE, G., additional, ALBERTI, S., additional, FASEL, D., additional, GOODMAN, T., additional, HOGGE, J.-P., additional, PAGONAKIS, I., additional, PORTE, L., additional, TRAN, M. Q., additional, AVRAMIDES, K., additional, VOMVORIDIS, J., additional, CLAESEN, R., additional, SANTINELLI, M., additional, DUMBRAJS, O., additional, GANTENBEIN, G., additional, KERN, S., additional, ILLY, S., additional, JIN, J., additional, PIOSCZYK, B., additional, RZESNICKI, T., additional, THUMM, M., additional, HENDERSON, M., additional, CIRANT, S., additional, LATSAS, G., additional, and TIGELIS, I., additional

Published
2009
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90. FIRST EXPERIMENTAL RESULTS FROM THE EU 2 MW COAXIAL CAVITY ITER GYROTRON PROTOTYPE

Author

GOODMAN, T. P., primary, ALBERTI, S., additional, DROZ, E., additional, FASEL, D., additional, HOGGE, J. P., additional, JAWLA, S., additional, PORTE, L., additional, SIRAVO, U., additional, TRAN, M. Q., additional, ALBAJAR, F., additional, BONICELLI, T., additional, BENIN, P., additional, BETHUYS, S., additional, LIEVIN, C., additional, CIRANT, S., additional, DUMBRAJS, O., additional, GANTENBEIN, G., additional, ILLY, S., additional, JIN, J., additional, KERN, S., additional, PIOSCZYK, B., additional, RZESNICKI, T., additional, and THUMM, M., additional

Published
2009
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91. First Experimental Results from the European Union 2-MW Coaxial Cavity ITER Gyrotron Prototype

Author

Hogge, J.-P., primary, Goodman, T. P., additional, Alberti, S., additional, Albajar, F., additional, Avramides, K. A., additional, Benin, P., additional, Bethuys, S., additional, Bin, W., additional, Bonicelli, T., additional, Bruschi, A., additional, Cirant, S., additional, Droz, E., additional, Dumbrajs, O., additional, Fasel, D., additional, Gandini, F., additional, Gantenbein, G., additional, Illy, S., additional, Jawla, S., additional, Jin, J., additional, Kern, S., additional, Lavanchy, P., additional, LiÉvin, C., additional, MarlÉtaz, B., additional, Marmillod, P., additional, Perez, A., additional, Piosczyk, B., additional, Pagonakis, I., additional, Porte, L., additional, Rzesnickl, T., additional, Siravo, U., additional, Thumm, M., additional, and Tran, M. Q., additional

Published
2009
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94. Design of Electron Cyclotron Heating and Current Drive System of ITER

Author

Kobayashi, N., primary, Bigelow, T., additional, Bonicelli, T., additional, Cirant, S., additional, Denisov, G., additional, Heidinger, R., additional, Henderson, M., additional, Hogge, J.-P., additional, Piosczyk, B., additional, Ramponi, G., additional, Rao, S. L., additional, Rasmussen, D., additional, Saibene, G., additional, Sakamoto, K., additional, Takahashi, K., additional, Temkin, R. J., additional, Thumm, M., additional, Tran, M. Q., additional, Verhoeven, A. G. A., additional, Zohm, H., additional, Ryan, Philip M., additional, and Rasmussen, David, additional

Published
2007
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95. The European Fusion Reactor Activities

Author

Maisonnier, D., primary, Campbell, D., additional, Cook, I., additional, Di Pace, L., additional, Giancarli, L., additional, Hayward, J., additional, Li Puma, A., additional, Norajitra, P., additional, Sardain, P., additional, Tran, M. Q., additional, and Ward, D., additional

Published
2007
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96. Progress in Development of the 170 GHz, 2MW Coaxial Cavity Gyrotron for ITER

Author

Piosczyk, B., primary, Alberti, S., additional, Benin, P., additional, Bonicelli, T., additional, Dammertz, G., additional, Dumbrajs, O., additional, Gantenbein, G., additional, Giguet, E., additional, Goodman, T., additional, Hogge, J.P, additional, Illy, S., additional, Lievin, C., additional, Michel, G., additional, Porte, L., additional, Rzesnicki, T., additional, Schmid, M., additional, Thumm, M., additional, and Tran, M. Q., additional

Published
2006
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97. Gyrotron Development in EU for Present and Future Fusion Plasma Experiments

Author

Thumm, M., primary, Alberti, S., additional, Arnold, A., additional, Bariou, D., additional, Dammertz, G., additional, Darbos, C., additional, Dumbrajs, O., additional, Flamm, J., additional, Gantenbein, G., additional, Erckmann, V., additional, Giguet, E., additional, Heidinger, R., additional, Hogge, J. -P., additional, Illy, S., additional, Jin, J., additional, Kasparek, W., additional, Lievin, C., additional, Magne, R., additional, Michel, G., additional, Piosczyk, B., additional, Prinz, O., additional, Rzesnicki, T., additional, Schworer, K., additional, Tran, M. Q., additional, and Yovchev, I., additional

Published
2006
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98. Safety factor profile requirements for electron ITB formation in TCV

Author

Goodman, T P, primary, Behn, R, additional, Camenen, Y, additional, Coda, S, additional, Fable, E, additional, Henderson, M A, additional, Nikkola, P, additional, Rossel, J, additional, Sauter, O, additional, Scarabosio, A, additional, Zucca, C, additional, Alberti, S, additional, Amorim, P, additional, Andrèbe, Y, additional, Appert, K, additional, Arnoux, G, additional, Bortolon, A, additional, Bottino, A, additional, Chavan, R, additional, Condrea, I, additional, Droz, E, additional, Duval, B P, additional, Etienne, P, additional, Fasel, D, additional, Fasoli, A, additional, Gulejová, B, additional, Hogge, J-P, additional, Horacek, J, additional, Isoz, P-F, additional, Joye, B, additional, Karpushov, A, additional, Kim, S H, additional, Klimanov, I, additional, Lavanchy, P, additional, Lister, J B, additional, Llobet, X, additional, Madeira, T, additional, Magnin, J-C, additional, Marinoni, A, additional, Márki, J, additional, Marlétaz, B, additional, Marmillod, P, additional, Martin, Y, additional, Martynov, An, additional, Maslov, M, additional, Mayor, J-M, additional, Moret, J-M, additional, Mück, A, additional, Paris, P J, additional, Pavlov, I, additional, Perez, A, additional, Pitts, R A, additional, Pochelon, A, additional, Porte, L, additional, Schlatter, Ch, additional, Schombourg, K, additional, Shidara, H, additional, Siegrist, M, additional, Siravo, U, additional, Sushkov, A V, additional, Tonetti, G, additional, Tran, M Q, additional, Weisen, H, additional, Wischmeier, M, additional, Zabolotsky, A, additional, Zhuang, G, additional, and Zhuchkova, A, additional

Published
2005
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99. Development of a 2-MW, CW Coaxial Gyrotron at 70 GHz and Test Facility for ITER

Author

Hogge, J P, primary, Alberti, S, additional, Arnold, A, additional, Bariou, D, additional, Benin, P, additional, Bonicelli, T, additional, Bruschi, A, additional, Chavan, R, additional, Cirant, S, additional, Dumbrajs, O, additional, Fasel, D, additional, Gandini, F, additional, Giguet, E, additional, Goodman, T, additional, Heidinger, R, additional, Henderson, M, additional, Illy, S, additional, Jin, J, additional, Lievin, C, additional, Magne, R, additional, Marmillod, P, additional, Mondino, P L, additional, Perez, A, additional, Piosczyk, B, additional, Porte, L, additional, Rzesnicki, T, additional, Santinelli, M, additional, Thumm, M, additional, Tran, M Q, additional, and Yovchev, I, additional

Published
2005
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100. Experimental results and recent developments on the EU 2 MW 170 GHz coaxial cavity gyrotron for ITER.

Author

Kern, S., Hogge, J. -P., Alberti, S., Avramides, K., Gantenbein, G., Illy, S., Jelonnek, J., Jin, J., F. Li, Pagonakis, I. Gr., Piosczyk, B., Rzesnicki, T., Thumm, M. K., Tigelis, I., and Tran, M. Q.

Subjects
GYROTRONS, FUSION reactors, RADIATION, PROTOTYPES, NUCLEAR reactors
Abstract

The European Gyrotron Consortium (EGYC) is responsible for developing one set of 170 GHz mm-wave sources, in support of Europe's contribution to ITER. The original plan of targeting a 2 MW coaxial gyrotron is currently under discussion, in view of essential delays and damages. This paper reports on the latest results and plans with regard to the two 2 MW gyrotron prototypes, the industrial prototype at CRPP's CW test stand and a modular pre-prototype at KIT. The industrial prototype was delivered to CRPP end of September 2011 and reached an output power of 2 MW at an efficiency of 45 % and with good RF beam pattern, in only four days of short pulse RF test. These results validated all design changes made in reaction to the results of the experiments in 2008. On the fifth experimental day, an internal absorber broke, terminating any further experiment with this tube. In parallel, design and experimental activities at KIT went on, in particular featuring reduced stray radiation down to 4% of the RF power. Next years' plans for the 2 MW modular pre-prototype foresee a stepwise increase of pulse length. [ABSTRACT FROM AUTHOR]

Published
2012
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