This paper presents the hardware and software approach to replacing the current analogue linear feedback system on the TCV Tokamak with a DSP based system to allow for non-linear control. After preliminary combination, over 120 control signals are reduced ...

2006

Particle and Impurity Transport in Electron-Heated Discharges in TCV

Basil Duval, Olivier Sauter, Henri Weisen, Christian Schlatter, Alexey Zabolotskiy, Alexander Karpushov, Emiliano Fable, Alessandro Bortolon, Mikhail Maslov

2006

Carbon transport in TCV

Basil Duval, Henri Weisen, Alexey Zabolotskiy, Alexander Karpushov, Alessandro Bortolon

2006

Real-time data transfer in the TCV advanced plasma control system

Basil Duval, Jean-Marc Moret

A high performance system, specially designed for real-time plasma control and event detection on fusion experiments has been developed by the Centro de Fusao Nuclear of the Instituto Superior Tecnico (CFN/IST). Presently it is being integrated into the ad ...

2006

Non-Maxwellian Ion Energy Distribution in ECH-heated plasmas on TCV

Basil Duval, Timothy Goodman, Christian Schlatter, Alexander Karpushov

2006

Reconstruction of ion temperature profiles from single chord NPA measurements on the TCV tokamak

Basil Duval, Christian Schlatter, Alexander Karpushov

The flux of charge exchange ( CX) neutrals measured by neutral particle analysers ( NPAs) is the line integral along the viewline of the NPA and contains information about the ion energy distribution of the observed plasma. On the Tokamaka a Configuration ...

2006

Comparison of MHD-mode and Plasma Rotation Frequencies in TCV Ohmic and ECH Discharges

Basil Duval, Antoine Pochelon, Andrea Scarabosio, Alessandro Bortolon

2006

Non-Maxwellian Ion Energy Distribution in ECH-heated plasmas on TCV

Basil Duval, Timothy Goodman, Christian Schlatter, Alexander Karpushov

2006

Toroidal plasma rotation in the TCV tokamak

Basil Duval, Antoine Pochelon, Andrea Scarabosio, Alexander Karpushov, Alessandro Bortolon

The first toroidal rotation measurements in TCV ohmic L-mode plasmas with no external momentum injection are presented. The toroidal velocity profile of the fully stripped carbon species is measured by active Charge eXchange Recombination Spectroscopy with ...

2006

Observation of Spontaneous Toroidal Rotation Inversion in Ohmically Heated Tokamak Plasmas

Basil Duval, Antoine Pochelon, Andrea Scarabosio, Alessandro Bortolon

Bulk plasma toroidal rotation is observed to invert spontaneously from counter to cocurrent direction in TCV (Tokamak à Configuration Variable) Ohmically heated discharges, in low confinement mode, without momentum input. The inversion occurs in high curre ...

American Physical Society2006

The host software for the real-time PHA X-ray diagnostic on TCV

Basil Duval

A real-time pulse height analysis (PHA) X-ray diagnostic for the TCV tokamak has been developed using CFN multi-DSP-based VME acquisition, processing and control board. The hardware is composed by: (i) a detection system based on a Si SDD detector; (ii) a ...

2006

Real-time Multi-DSP based VME system for feedback control on the TCV tokamak

Basil Duval

This paper describes a real-time pulse height analysis diagnostic for feedback control of the TCV plasma. The implementation of this diagnostic is based on a new generation X-ray detector with high resolution and count rate, an in-house developed VME intel ...

2006

Carbon transport in TCV

Basil Duval, Henri Weisen, Alexey Zabolotskiy, Alexander Karpushov, Alessandro Bortolon

2006

Spontaneous plasma rotation in limited and diverted TCV ohmic discharges

Basil Duval, Andrea Scarabosio, Alessandro Bortolon

2006

Neutral particle analyzer diagnostics on the TCV tokamak

Basil Duval, Christian Schlatter, Alexander Karpushov

Experimental apparatus and data analysis techniques used in neutral particle analyzer (NPA) diagnostics on the Tokamak a Configuration Variable (TCV) are described. Two NPAs are used on TCV to measure the energy spectrum of neutral particle fluxes from the ...

2006

Electron Bernstein Wave Heating of Overdense H-mode Plasmas in the TCV Tokamak via O-X-B Double Mode Conversion

Basil Duval, Timothy Goodman, Yves Martin, Jean-Marc Moret, Antoine Pochelon, Stefano Coda, Igor Klimanov, Laurie Porte, Loïc Curchod, Yann Camenen

2006

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