H. Weisen

Details der Publikationsliste

Zeitraum

1983 - 2009

Anzahl

317

Co-Autoren

Physics Insight and Performance Benefit from Plasma Shaping Experiments in MHD and Energy Transport in the TCV Tokamak (2008)

Pochelon, A., Brunner, S., Camenen, Y., Coda, S., Graves, J., Marinoni, A., ...

The unique flexibility of TCV in plasma shaping has been exploited to address different aspects of tokamak physics in which the plasma shape may play a role. This paper summarizes the experiments...

Core transport studies in jet (2008)

Mantica, P., Corrigan, G., Garbet, X., Imbeaux, F., Lonnroth, J., Parail, V., ...

Fusion Science and Technology Vol.53 Nr.4, 1152 - 1216

Recent electron cyclotron emission results on TCV (2007)

Udintsev, V. S., Turri, G., Asp, E., Schlatter, C., Goodman, T. P., Sauter, O., ...

Electron cyclotron emission (ECE) diagnostics on Tokamak a Configuration Variable (TCV) allow study of the electron temperature evolution in time with good spatial and temporal resolution at the high...

Plasma dynamics with second and third-harmonic ECRH and access to quasi-stationary ELM-free H-mode on TCV (2007)

Porte, L., Coda, S., Alberti, S., Arnoux, G., Blanchard, P., Bortolon, A., ...

Intense electron cyclotron resonance heating (ECRH) and electron cyclotron current drive (ECCD) are employed on the Tokamak a Configuration Variable (TCV) both in second- and third-harmonic X-mode...

Particle and impurity transport in the Axial Symmetric Divertor Experiment Upgrade and the Joint European Torus, experimental observations and theoretical understanding - art. no. 055905 (2007)

Angioni, C., Carraro, L., Dannert, T., Dubuit, N., Dux, R., Fuchs, C., ...

Experimental observations on core particle and impurity transport from the Axial Symmetric Divertor Experiment Upgrade [O. Gruber, H.-S. Bosch, S. Gunter , Nucl Fusion 39, 1321 (1999)] and the Joint...

Particle and impurity transport in the Axial Symmetric Divertor Experiment Upgrade and the Joint European Torus, experimental observations and theoretical understanding (2007)

Angioni, C., Carraro, L., Dannert, T., Dubuit, N., Dux, R., Fuchs, C., ...

Experimental observations on core particle and impurity transport from the Axial Symmetric Divertor Experiment Upgrade [O. Gruber, H.-S. Bosch, S. Gunter , Nucl Fusion 39, 1321 (1999)] and the Joint...

Research Challenges for the ITER Baseline Scenario on JET (2006)

Buttery, R.J., Giroud, C., Eich, T., Eriksson, L.–G., Imbeaux, F., Hobirk,J., ...

21st IAEA Fusion Energy Conference, Chengdu, China, October 16-21, 2006

Influence of particle sources on electron density peaking in TCV and JET (2006)

Zabolotsky, A., Weisen, H., Karpushov, A.

Calculations of the particle flux caused by neutrals originating from the edge are performed for TCV and JET using the one-dimensional kinetic transport code Kn1D. The analysis, confirmed by...

Density profile peaking in the presence of ECRH heating in TCV (2006)

Zabolotsky, A., Weisen, H.

Experimental observations in stationary ECRH discharges in TCV show that additional heating has a strong effect on the electron density profile. In the absence of MHD activity or strong internal...

Scaling of density peaking in JET H-modes and implications for ITER (2006)

Weisen, H., Zabolotsky, A., Maslov, M., Beurskens, M., Giroud, C., Mazon, D.

Results from an extensive profile database analysis of JET density profiles in H-mode show that the density peaking factor n(e0)/ < n(e) > in JET H-modes increases as the effective collisionality...

Studies of high frequency hot ion instabilities by means of correlation ECE on Tore Supra (2006)

Udintsev, V. S., Goniche, M., Giruzzi, G., Huysmans, G. T. A., Imbeaux, F., Maget, P., ...

High frequency (> 100 kHz) modes have been observed for the first time in combined LHCD and ICR-heated minority H (D) plasmas on Tore Supra by means of a correlation ECE diagnostic and by fluctuation...

Inward thermodiffusive particle pinch in electron internal transport barriers in TCV (2006)

Fable, E., Sauter, O., Coda, S., Goodman, T. P., Henderson, M. A., Weisen, H., ...

Electron internal transport barriers (eITBs) are obtained in TCV with different heating and current drive schemes. They are sustained in steady-state conditions for several energy confinement and...

10-channel far-infrared polarimeter for the tokamak configuration variable - art. no. 10F101 (2006)

Blanchard, P., Behn, R., Weisen, H., Zhuchkova, A.

A new far-infrared polarimeter diagnostic for the tokamak a configuration variable (TCV) is under construction at CRPP. It uses two FIR lasers at 432.5 mu m, optically pumped by a 120 W continuous...

10-channel far-infrared polarimeter for the tokamak configuration variable (2006)

Blanchard, P., Behn, R., Weisen, H., Zhuchkova, A.

A new far-infrared polarimeter diagnostic for the tokamak a configuration variable (TCV) is under construction at CRPP. It uses two FIR lasers at 432.5 mu m, optically pumped by a 120 W continuous...

Collisionality and shear dependences of density peaking in JET and extrapolation to ITER (2005)

Weisen, H., Zabolotsky, A., Angioni, C., Furno, I., Garbet, X., Giroud, C., ...

Results from an extensive database analysis of JET density profiles in stationary conditions show that the density peaking factor n(e0)/< n(e)> in JET H modes increases from near 1.2 at high...

Overview of transport, fast particle and heating and current drive physics using tritium in JET plasmas (2005)

Stork, D., Baranov, Y., Belo, P., Bertalot, L., Borba, D., Brzozowski, J. H., ...

Results are presented from the JET Trace Tritium Experimental (TTE) campaign using minority tritium (T) plasmas (n(T)/n(D) < 3%). Thermal tritium particle transport coefficients (D-T, nu(T)) are...

Safety factor profile requirements for electron ITB formation in TCV (2005)

Goodman, T. P., Behn, R., Camenen, Y., Coda, S., Fable, E., Henderson, M. A., ...

On the Tokamak a Configuration Variable (TCV), electron internal transport barriers (eITBs) can be formed during a gradual evolution from a centrally peaked to a hollow current profile while all...

A new method for the inversion of interferometry data using basis functions derived from singular value decomposition of local measurements in tokamak plasmas (2005)

Furno, I., Weisen, H., Carey, C., Angioni, C., Behn, R., Fable, E., ...

A novel method for inverting time-resolved line-integrated interferometric plasma density measurements is described. The method uses singular value decomposition of local density profiles from...

Density peaking in low collisionlity ELMy H-mode in JET (2004)

Valovic, M., Budny, R., Garzotti, L., Garbet, X., Korotkov, A. A., Rapp, J., ...

This version is available at the following Publisher URL: http://stacks.iop.org/0741-3335/46/1877

Tritium transport experiments on the JET tokamak (2004)

Zastrow, K. D., Adams, J. M., Baranov, Y., Belo, P., Bertalot, L., Brzozowski, J. H., ...

An overview is given of the experimental method, the analysis technique and the results for trace tritium experiments conducted on the JET tokamak in 2003. Observations associated with events such as...

Shear and collisionality dependences of particle pinch in JET L-mode plasmas (2004)

Weisen, H., Zabolotsky, A., Garbet, X., Mazon, X., Zabeo, L., Giroud, C., ...

The peakedness of the density profile in source-free MHD-quiescent L-mode plasmas with lower hybrid current drive is observed to decrease with decreasing peaking of the current profile. For the...

Feasibility of a motional Stark effect system on the TCV tokamak (2004)

Siegrist, M. R., Hawkes, N., Weisen, H.

This article presents a feasibility study for a motional Stark effect diagnostic on the TCV tokamak. A numerical simulation code has been used to identify the optimal port arrangement and geometrical...

Feasibility of a motional Stark effect system on the TCV tokamak (2004)

Siegrist, M. R., Hawkes, N., Weisen, H.

This paper presents a feasibility study for a motional Stark effect (MSE) [F. M. Levinton , Phys. Rev. Lett. 63, 2060 (1989)] diagnostic on the TCV tokamak. A numerical simulation code has been used...

Effects of ECRH power and safety factor on laser blow-off injected impurity confinement in TCV (2004)

Scavino, E., Bakos, J., Weisen, H.

Evidence from injection into the TCV device of laser ablated, non-recycling silicon impurities shows that the transport of impurities confinement can be remarkably different from that of energy. The...

Ultrasoft x-ray spectroscopy using multilayer mirrors on TCV (2004)

Piffl, V., Weisen, H., Zabolotsky, A.

The TCV tokamak is equipped with a four-channel ultrasoft x-ray monochromator allowing low resolution (lambda/Deltalambda similar to 30) measurements in the energy range 200-800eV. Its main purpose...

Physics of transport in tokamaks (2004)

Garbet, X., Mantica, P., Angioni, C., Asp, E., Baranov, Y., Bourdelle, C., ...

This paper is an overview of recent results relating to turbulent particle and heat transport, and to the triggering of internal transport barriers (ITBs). The dependence of the turbulent particle...

AXUV bolometer and Lyman-alpha camera systems on the TCV tokamak (2004)

Degeling, A. W., Weisen, H., Zabolotsky, A., Duval, B. P., Pitts, R. A., Wischmeier, M., ...

A set of seven twin slit cameras, each containing two 20-element linear absolute extreme ultraviolet photodiode arrays, has been installed on the Tokamak a Configuration Variable. One array in each...

Application of the singular value decomposition method for inversion of interferometer measurements in fusion plasmas (2004)

Carey, C. S., Furno, I., Weisen, H., Behn, R., Fable, E., Angioni, C.

We present applications of a recently developed method, the singular value decomposition inversion (SVD-I), for inverting line integrated multichannel interferometer measurements in fusion devices....

INSTITUTE OF PHYSICS PUBLISHING PLASMA PHYSICS AND CONTROLLED FUSION (2004)

I Furno, H Weisen, C Carey, C Angioni, R Behn, E Fable, ...

A new method for the inversion of interferometry data using basis functions derived from singular value decomposition of local measurements in tokamak plasmas

Physics of Transport in Tokamaks (2004)

Garbet, X., Mantica, P., Angioni, C., Asp, E., Baranov, Y., Bourdelle, C., ...

Plasma Physics and Controlled Fusion Vol.46 Nr.12B, B557 - B574

Recent results from the electron cyclotron heated plasmas in Tokamak à Configuration Variable (TCV) (2003)

Henderson,M. A., Alberti,S., Angioni,C., Arnoux,G., Behn,R., Blanchard,P., ...

In noninductively driven discharges, 0.9 MW second harmonic (X2) off-axis co-electron cyclotron current drive deposition is combined with 0.45 MW X2 central heating to create an electron internal...

Turbulent particle transport in magnetized plasmas (2003)

Garbet,X., Garzotti,L., Mantica,P., Nordman,H., Valovic,M., Weisen,H., ...

Particle transport in magnetized plasmas is investigated with a fluid model of drift wave turbulence. An analytical calculation shows that magnetic field curvature and thermodiffusion drive an...

An overview of recent results from the TCV Tokamak (2003)

Goodman,T. P., Ahmed,S. M., Alberti,S., Andrèbe,Y., Angioni,C., Appert,K., ...

The TCV tokamak ( R = 0.88 m, κ = 2.5, are produced at low normalized current using far off-axis EC heating (ECH) and ECCD to broaden the current profile. Third harmonic heating is used to heat the...

Effects of plasma shape on laser blow-off injected impurity transport in TCV (2003)

Scavino,E., Bakos,J. S., Dux,R., Weisen,H., TCV Team,

The extreme shaping capabilities of the TCV tokamak have been used to investigate the effect of plasma geometry on the confinement of non-recycling trace impurities injected by means of the laser...

Recent results from the electron cyclotron heated plasmas in Tokamak à Configuration Variable (TCV) (2003)

Henderson, M. A., Alberti, S., Angioni, C., Arnoux, G., Behn, R., Blanchard, P., ...

In noninductively driven discharges, 0.9 MW second harmonic (X2) off-axis co-electron cyclotron current drive deposition is combined with 0.45 MW X2 central heating to create an electron internal...

Turbulent particle transport in magnetized plasmas (2003)

Garbet, X., Garzotti, L., Mantica, P., Nordman, H., Valovic, M., Weisen, H., ...

Particle transport in magnetized plasmas is investigated with a fluid model of drift wave turbulence. An analytical calculation shows that magnetic field curvature and thermodiffusion drive an...

An overview of recent results from the TCV Tokamak (2003)

Goodman, T. P., Ahmed, S. M., Alberti, S., Andrèbe, Y., Angioni, C., Appert, K., ...

The TCV tokamak ( R = 0.88 m, κ = 2.5, are produced at low normalized current using far off-axis EC heating (ECH) and ECCD to broaden the current profile. Third harmonic heating is used to heat the...

Effects of plasma shape on laser blow-off injected impurity transport in TCV (2003)

Scavino, E., Bakos, J. S., Dux, R., Weisen, H., TCV Team

The extreme shaping capabilities of the TCV tokamak have been used to investigate the effect of plasma geometry on the confinement of non-recycling trace impurities injected by means of the laser...

Observation and empirical modelling of the anomalous particle pinch in TCV (2003)

Zabolotsky, A., Weisen, H.

Moderately peaked electron density profiles are observed in virtually all plasma conditions in TCV. The existence of an anomalous pinch is unambiguously demonstrated by the observation of peaked...

Effects of plasma shape on laser blow-off injected impurity transport in TCV (2003)

Scavino, E., Bakos, J. S., Dux, R., Weisen, H.

The extreme shaping capabilities of the TCV tokamak have been used to investigate the effect of plasma geometry on the confinement of non-recycling trace impurities injected by means of the laser...

Overview of JET results (2003)

Pamela, J., Solano, E. R., Adams, J. M., Agarici, G., Agarici, M., Akhter, H., ...

Scientific and technical activities on JET focus on the issues likely to affect the ITER design and operation. Our understanding of the ITER reference mode of operation, the ELMy H-mode, has...

Investigation of the consistency of magnetic and soft X-ray plasma position measurements on TCV by means of a rapid tomographic inversion algorithm (2003)

Mlynar, J., Coda, S., Degeling, A., Duval, B. P., Hofmann, F., Goodman, T., ...

A rapid algorithm for tomographic inversion is presented that allows post-discharge reconstruction of the soft x-ray (SXR) emissivity evolution in the Tokamak a configuration variable (TCV)....

Accessibility and properties of ELMy H-mode and ITB plasmas in TCV (2003)

Martin, Y. R., Henderson, M. A., Alberti, S., Amorim, P., Andrebe, Y., Appert, K., ...

This paper presents experimental results on the accessibility and the properties of plasmas with improved confinement in TCV. First, the H-mode threshold power is measured in Ohmic plasmas. Above an...

Upgrade of the diagnostic neutral beam injector for the TCV tokamak (2003)

Karpushov, A. N., Abdrashitov, G. F., Averboukh, II, Bosshard, P., Condrea, I., Duval, B. P., ...

A diagnostic neutral beam injector (DNBI) [CRPP report LRP 710/01, CRPP-EPFL, 200 1; EPS Conf. Comr. Fusion Plasma Phys., 25A (2001) 365] has been installed on tokamak A configuration variable (TCV)...

Recent results from the electron cyclotron heated plasmas in Tokamak a Configuration Variable (TCV) (2003)

Henderson, M. A., Alberti, S., Angioni, C., Arnoux, G., Behn, R., Blanchard, P., ...

In noninductively driven discharges, 0.9 MW second harmonic (X2) off-axis co-electron cyclotron current drive deposition is combined with 0.45 MW X2 central heating to create an electron internal...

An overview of results from the TCV tokamak (2003)

Goodman, T. P., Ahmed, S. M., Alberti, S., Andrebe, Y., Angioni, C., Appert, K., ...

The Tokamak Configuration Variable (TCV) tokamak (R = 0.88 m, a < 0.25 m, B < 1.54 T) programme is based on flexible plasma shaping and heating for studies of confinement, transport, control and...

Turbulent particle transport in magnetized plasmas (2003)

Garbet, X., Garzotti, L., Mantica, P., Nordman, H., Valovic, M., Weisen, H., ...

Particle transport in magnetized plasmas is investigated with a fluid model of drift wave turbulence. An analytical calculation shows that magnetic field curvature and thermodiffusion drive an...

Observation of inward and outward particle convection in the core of electron cyclotron heated and current driven plasmas in the Tokamak a Configuration Variable (2003)

Furno, I., Weisen, H.

In the Tokamak a Configuration Variable [F. Hofmann, J.B. Lister, M. Anton et al., Plasma Phys. Controlled Fusion 36, B277 (1994)], inward or outward convection in the core of electron cyclotron...

On the dependence of energy confinement on elongation in single null divertor plasmas (2002)

Weisen, H., Martin, Y., Moret, J. M.

An analysis of the effect of magnetic geometry on heat flux in a wide range of single null diverted discharge configurations with 1.5 < κ(95) < 2.2, 0.2 < δ(95) < 0.45 suggests that...

Shape dependence of sawtooth inversion radii and profile peaking factors in TCV L mode plasmas (2002)

Weisen, H., Furno, I., Alberti, S., Angioni, C., Appert, K., Behn, R., ...

Sawtooth inversion radii and profile peaking factors of a large variety of ohmic and ECH heated L mode plasmas, including, elongations up to 2.6 and triangularities between -0.5 and 0.75, have been...

ECH physics and new operational regimes on TCV (2002)

Moret, J. M., Ahmed, S. M., Alberti, S., Andrebe, Y., Appert, K., Arnoux, G., ...

The physics of tokamak plasmas, in which electrons are heated by electron cyclotron heating (ECH) and whose current is driven by electron cyclotron current drive (ECCD), is investigated in this paper...

High field side measurements of non-thermal electron cyclotron emission on TCV plasmas with ECH and ECCD (2002)

Blanchard, P., Alberti, S., Coda, S., Weisen, H., Nikkola, P., Klimanov, I.

Measurements of electron cyclotron emission (ECE) from the high field side of the TCV tokamak have been made on plasmas heated by second and third harmonic X-mode electron cyclotron heating (ECH) and...

Evidence for the role of magnetic entropy and turbulent equipartition in stationary Ohmic tokamak discharges (2001)

Weisen, H., Minardi, E.

The electron temperature, pressure and density pro les from an extreme variety of shaped Ohmically heated sawtoothing plasmas in TCV ( Tokamak a Configuration Variable, B-T < 1.5T, R-0 = 0.88 m, a <...

Particle transport with high power central ECH and ECCD in TCV (2001)

Weisen, H., Furno, I.

A coupled heat and particle transport phenomenon, leading to particle depletion from the plasma core is observed in a variety of plasma conditions with centrally deposited electron cyclotron heating...

Overview of TCV results (2001)

Weisen, H., Alberti, S., Angioni, C., Appert, K., Bakos, J., Behn, R., ...

The TCV tokamak (R = 0.88 in, a < 0.25 in, BT < 1.54 T) is equipped with six 0.5 MW gyrotron sources operating at 82.7 GHz for second harmonic X mode ECH. By distributing the ECCD current sources...

Sustained fully non-inductive scenarios using pressure and current profile control with ECCD (2001)

Sauter, O., Goodman, T. P., Coda, S., Henderson, M., Hofmann, F., Hogge, J. P., ...

The ECW system on Tokamak a configuration variable (TCV) allows the study of a wide range of poloidal and toroidal launch angles. Both electron cyclotron heating (ECH) and electron cyclotron current...

Steady-state fully noninductive operation with electron cyclotron current drive and current profile control in the tokamak a configuration variable (TCV) (2001)

Sauter, O., Angioni, C., Coda, S., Gomez, P., Goodman, T. P., Henderson, M. A., ...

Fully noninductive, steady-state electron cyclotron current drive (ECCD) has been demonstrated for the first time in experiments carried out in the tokamak a configuration variable (TCV) [O. Sauter ,...

Stationary magnetic entropy in ohmic tokamak plasmas: Experimental evidence from the TCV device (2001)

Minardi, E., Weisen, H.

Electron temperature, pressure and density profiles from a large variety of ohmically heated plasmas in the TCV tokamak (B-T < 1.5 T, R-0 = 0.88 m, a < 0.25 m) are compared with theoretical...

Stability and energy confinement of highly elongated plasmas in TCV (2001)

Hofmann, F., Behn, R., Coda, S., Goodman, T. P., Henderson, M., Lavanchy, P., ...

The operating space of the TCV tokamak has been extended to higher elongation, kappa = 2.8, and higher normalized current, I-N = I-p/aB = 3.6MA/mT, than were previously attainable. This has been...

Understanding of H mode pedestal characteristics using the multimachine pedestal database (2001)

Hatae, T., Sugihara, M., Hubbard, A. E., Igitkhanov, Y., Kamada, Y., Janeschitz, G., ...

With use of a multimachine pedestal database, essential issues for each regime of ELM types are investigated. They include (i) understanding and prediction of pedestal pressure during type I ELMs, a...

Understanding sawtooth activity during intense electron cyclotron heating experiments on TCV (2001)

Furno, I., Angioni, C., Porcelli, F., Weisen, H., Behn, R., Goodman, T. P., ...

Different types of central relaxation oscillations are observed in the presence of ECH depending on the location of the deposited power. In the TCV tokamak, normal sawteeth, i.e. triangular sawteeth...

Steady-state fully noninductive current driven by electron cyclotron waves in a magnetically confined plasma (2000)

Sauter, O., Henderson, M. A., Hofmann, F., Goodman, T., Alberti, S., Angioni, C., ...

A steady-state, fully noninductive plasma current has been sustained for the first time in a tokamak using electron cyclotron current drive only. In this discharge, 123 kA of current have been...

Central electron temperature enhancements due to sawtooth stabilization during counter electron cyclotron current drive in Tokamak a Configuration Variable (2000)

Pietrzyk, Z. A., Angioni, C., Behn, R., Coda, S., Goodman, T. P., Henderson, M. A., ...

In the Tokamak a Configuration Variable (TCV), the central electron temperature obtained in discharges with counter (CNTR) electron cyclotron current drive (ECCD) is larger than with CO-ECCD or...

High-power ECH and fully non-inductive operation with ECCD in the TCV tokamak (2000)

Coda, S., Goodman, T. P., Henderson, M. A., Hofmann, F., Pietrzyk, Z. A., Sauter, O., ...

Experiments with high-power electron cyclotron heating (ECH) and current drive (ECCD) in the TCV tokamak are discussed. Power up to 2.7 MW from six gyrotrons is delivered to the tokamak at the...

"Profile consistency" features in strongly shaped Ohmic tokamak plasmas (1999)

Weisen, H., Behn, R., Furno, I., Moret, J. M., Sauter, O.

A large variety of shaped tokamak discharges have been created in the Tokamak a Configuration Variable (TCV) with main parameters B-T

Energy confinement and MHD activity in shaped TCV plasmas with localized electron cyclotron heating (1999)

Pochelon, A., Goodman, T. P., Henderson, M., Angioni, C., Behn, R., Coda, S., ...

Confinement in TCV electron cyclotron heated discharges was studied as a function of plasma shape, i.e. as a function of elongation, 1.1 < kappa < 2.15, and triangularity, -0.65 less than or equal to...

Experimental investigation of the effects of neon injection in TCV (1999)

Pitts, R. A., Refke, A., Duval, B. P., Furno, I., Joye, B., Lister, J. B., ...

This contribution describes the results of impurity seeding experiments using neon gas injection into the private fl zone of an ohmically heated TCV single null lower, deuterium fuelled, open...

Behaviour of central plasma relaxation oscillations during localized electron cyclotron heating on the TCV tokamak (1999)

Pietrzyk, Z. A., Pochelon, A., Goodman, T. P., Henderson, M. A., Hogge, J. P., Reimerdes, H., ...

During initial studies of ECRH in the TCV tokamak, non-standard central MHD activities, such as humpbacks and saturated and inverted sawteeth, have been observed while changing the heating location,...

Fast bolometric measurements on the TCV tokamak (1999)

Furno, I., Weisen, H., Mlynar, J., Pitts, R. A., Llobet, X., Marmillod, P., ...

The design and first results are presented from a bolometric diagnostic with high temporal resolution recently installed on the TCV tokamak. The system consists of two pinhole cameras viewing the...

'Profile consistency' features in shaped sawtoothing ohmic TCV plasmas (1998)

Weisen, H., Behn, R., Furno, I., Moret, J. M., Sauter, O.

A large variety of plasma conditions has been created in TCV (Tokamak a Configuration Variable, B-T < 1.5 T, R-0 = 0.88 m, a < 0.25 m). They include limited and diverted discharges with elongations...

Effect of plasma shape on confinement and MHD behaviour in the TCV tokamak (1997)

Weisen, H., Moret, J. M., Franke, S., Furno, I., Martin, Y., Anton, M., ...

The energy confinement time of TCV ohmic L mode discharges depends strongly on plasma shape. For fixed average current and electron densities, confinement times increase with plasma elongation and...

Effect of plasma shape on confinement and MHD behaviour in TCV (1997)

Weisen, H., Alberti, S., Berry, S., Behn, R., Blanchard, P., Bosshard, P., ...

The TCV tokamak (B-T < 1.5 T, R approximate to 0.88 m, a < 0.25 m) has produced a wide variety of plasma configurations, both diverted and limited, with elongations kappa(a), ranging from 0.9 to...

Divertor target profiles and recycling studies in TCV single null lower standard discharges (1997)

Pitts, R. A., Nieswand, C., Weisen, H., Anton, M., Behn, R., Chavan, R. F., ...

A 'standard', single null lower diverted discharge has been developed to enable continuous monitoring of the first wall conditions and to characterise the effectiveness and influence of wall...

Influence of plasma shape on transport in the TCV Tokamak (1997)

Moret, J. M., Franke, S., Weisen, H., Anton, M., Behn, R., Duval, B. P., ...

The energy confinement time of TCV Ohmic, L-mode discharges is observed to depend strongly on the plasma shape, improving slightly with elongation and degrading strongly as triangularity is increased...

Ohmic H-modes in the TCV tokamak (1996)

Weisen, H., Hofmann, F., Dutch, M. J., Martin, Y., Pochelon, A., Moret, J. M., ...

The TCV tokamak has obtained ohmic H-modes in virtually all diverted plasmas with the ion del B drift directed towards an X-point and in several elongated limiter plasmas. Troyon factors...

Effect on confinement of edge-localized modes in TCV (1996)

Weisen, H., Dutch, M. J., Hofmann, F., Martin, Y., Moret, J. M., Nieswand, C., ...

The effect of ELMs on confinement in ohmic H-modes has been investigated by analysing the rates of change of global parameters such as the electron content and the stored energy as a function of ELM...

X-ray tomography on the TCV tokamak (1996)

Anton, M., Weisen, H., Dutch, M. J., VonderLinden, W., Buhlmann, F., Chavan, R., ...

The TCV tokamak offers outstanding variability of the plasma shape. Using x-ray tomography, the shape of the inner flux surfaces of a poloidal cross section of the plasma can be reconstructed,...

Recent Results from the Tcv Tokamak (1995)

Weisen, H., Hoffmann, F., Dutch, M. J., Moret, J. M., Lister, J. B., Pochelon, A., ...

During the first two years of operation, the TCV tokamak has produced a large variety of plasma shapes and magnetic configurations, with 1.0 less than or equal to B-tor less than or equal to 1.46T,...

Ohmic H-mode and confinement in TCV (1995)

Moret, J. M., Anton, M., Barry, S., Behn, R., Besson, G., Buhlmann, F., ...

The unique flexibility of TCV for the creation of a wide variety of plasma shapes has been exploited to address some aspects of tokamak physics for which the shape may play an important role. The...

Elm Control During Double-Null Ohmic H Modes in Tcv (1995)

Dutch, M. J., Hofmann, F., Duval, B. P., Corboz, M., Hirt, A., Joye, B., ...

Precise control of the shape and position of double-null divertor configurations in the TCV tokamak has been used to trigger reliably the transition from ELM-free to ELMy ohmic H mode and back....

Relative Calibration of Photodiodes in the Soft-X-Ray Spectral Range (1995)

Anton, M., Dutch, M. J., Weisen, H.

A method of obtaining a relative calibration of Si photodiodes for the spectral range of soft x rays (1-30 KeV) is presented. A simple mathematical model of the p-n diode is adopted which allows the...

Creation and Control of Variably Shaped Plasmas in Tcv (1994)

Hofmann, F., Lister, J. B., Anton, M., Barry, S., Behn, R., Bernel, S., ...

During the first year of operation, the TCV tokamak has produced a large variety of plasma shapes and magnetic configurations, with 1.0 less than or equal to B(tor)less than or equal to 1.46T, I-p...

Mhd Activity During H-Mode Discharges on the Tcv Tokamak (1994)

Hirt, A., Duval, B. P., Moret, J. M., Pochelon, A., Tonetti, G., Weisen, H.

Ohmic H-mode has been regularly obtained on the TCV tokamak. This paper describes the change in magnetic activity occuring at the transition, the coherent activity during H-mode, a brief description...

Boundary Ion Temperatures and Ion Orbit Losses in Jet (1991)

Weisen, H., Bergsaker, H., Campbell, D. J., Erents, S. K., Dekock, Lcjm, McCracken, G. M., ...

Ion and electron temperatures of up to 5 keV have been obtained within 10 cm of the last closed flux surface (LCFS) in hot ion H-modes with 18 MW of neutral beam heating. The ion temperature profiles...

Studies of D-D Fusion Reactivity in High-Temperature Jet Plasmas (1991)

Adams, J. M., Balet, B., Boyd, D. A., Campbell, D. J., Challis, C. D., Christiansen, J. P., ...

The D-D fusion reactivity from JET plasmas has been optimized by using combined neutral beam injection and radiofrequency heating. Reaction rates of up to 2.9 x 10(16) reactions per second...