T. O’Gorman P. J. Mc Carthy S. Prunty M. J. Walsh M. R. Dunstan R. B. Huxford G. Naylor Emmanuel Maguet R. Scannell S. Shibaev
A major upgrade to the ruby Thomson scattering (TS) system has been designed and implemented on the Mega-ampere spherical tokamak (MAST). MAST is equipped with two TS systems, a Nd:YAG laser system and a ruby laser system. Apart from common collection optics each system provides independent measurements of the electron temperature and density profi…
PublishedR. Scannell M. J. Walsh M. R. Dunstan J. Figueiredo G. Naylor T. O’Gorman K. J. Gibson H. Wilson S. Shibaev
A Thomson scattering diagnostic designed to measure both edge and core physics has been implemented on MAST. The system uses eight Nd:YAG lasers, each with a repetition rate of 30 Hz. The relative and absolute timing of the lasers may be set arbitrarily to produce fast bursts of measurements to suit the time evolution of the physics being studied. …
PublishedR. Scannell M. J. Walsh P. G. Carolan A. C. Darke M. R. Dunstan R. B. Huxford G. McArdle D. Morgan G. Naylor T. O’Gorman S. Shibaev N. Barratt K. J. Gibson G. J. Tallents H. R. Wilson
A new infrared Thomson scattering system has been designed for the MAST tokamak. The system will measure at 120 spatial points with 10 mm resolution across the plasma. Eight 30 Hz 1.6 J Nd:YAG lasers will be combined to produce a sampling rate of 240 Hz. The lasers will follow separate parallel beam paths to the MAST vessel. Scattered light will b…
PublishedD. Iraji A. Diallo A. Fasoli I. Furno S. Shibaev
Fast framing cameras constitute an important recent diagnostic development aimed at monitoring light emission from magnetically confined plasmas, and are now commonly used to study turbulence in plasmas. In the TORPEX toroidal device [A. Fasoli et al. , Phys. Plasmas 13 , 055902 (2006)], low frequency electrostatic fluctuations associated with drif…
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