LIDAR Thomson scattering diagnostics have proven successful at JET to measure electron temperature and density profiles along a diameter in the equatorial plane and in the divertor region. A hard limit of the LIDAR approach is the low spatial resolution (～ 12 cm), given by the response time of the system. This resolution is difficult to significantly improve, based on the available technology. Two regions of the plasma require a higher resolution: gradient zones at the ITBs (Internal Transport Barriers) and the edge pedestal. A conventional TS system is being developed for JET-EP, which will provide 1.5 cm resolution for the ITBs and edge pedestal, with a predicted accuracy of 15% at a density of 1.0xl0~(19)m~(-3).
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