Abstract
The test facility ELISE, presently being commissioned at IPP, is a first step in the R&D roadmap for the RF driven ion source and extraction system of the ITER NBI system. The “half-size” ITER-like test facility includes a negative hydrogen ion source that can be operated for 1h. ELISE is expected to extract an ion beam of 20A at 60kV for 10s every 3min, therefore delivering a total power of 1.2MW. The extraction area has a geometry that closely reproduces the ITER design, with the same width and half the height, i.e. 1m×1m.This paper presents an overview of beam diagnostic tools foreseen for ELISE. For the commissioning phase, a simple beam dump with basic diagnostic capabilities has been installed. In the second phase, the beam dump will be substituted by a more sophisticated diagnostic calorimeter to allow beam profile measurement. Additionally, a tungsten wire mesh will be introduced in the beam path to provide a qualitative picture of beam size and position. Stripping losses and beam divergence will be measured by means of Hα Doppler shift spectroscopy. An absolute calibration is foreseen in order to measure beam intensity.
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