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Overview of the RF source development programme at IPP Garching
The development of a large-area RF source for negative hydrogen ions, an official EFDA task agreement, is aiming at demonstrating ITER-relevant ion source parameters. This implies a current densityExpand
Spectroscopy - A Powerful Diagnostic Tool in Source Development
The development of negative hydrogen ion sources for neutral beam systems is closely linked with an optimization of negative ion formation in hydrogen plasmas, which requires knowledge of the plasmaExpand
Design of the half-size ITER neutral beam source for the test facility ELISE
Abstract In 2007 the radio frequency driven negative hydrogen ion source developed at IPP in Garching was chosen by the ITER board as the new reference source for the ITER neutral beam system. InExpand
Progress of the Development of the IPP RF Negative Ion Source for the ITER Neutral Beam System
IPP Garching has successfully developed a RF driven negative ion source for the ITER neutral beam injection system. The RF source is now an interesting alternative to the reference design withExpand
Neutral beam injection system
The development of the neutral injection (NI) system for the Joint European Torus and its status in 1985 are reported. First the system parameters are discussed and the layout is described, followedExpand
Performance of hypervapotron beam-stopping elements at JET : Special section : Thermal hydraulics
Rectangular Hypervapotron beam-stopping elements made from Cu-Cr-Zr have been used in the Joint European Torus (JET) beam injectors to dissipate up to 100 MW of power. Experience over more than 10 yrExpand
Beam profiles measurement using a unidirectional CFC-target and infrared imaging
We present a new high resolution beam diagnostic system for particle beams at MW power levels. The technique combines unidirectional properties of the Mitsubishi MFC-1 material with infrared imaging,Expand
Design issues and fatigue lifetime of hypervapotron elements of the JET neutral beam injectors
Recent results on high heat flux testing of hypervapotron beam stopping elements are discussed. Two issues are being addressed: a) fatigue lifetime of components presently used at JET, and b)Expand
Beryllium plasma-facing components: JET experience
Abstract JET has accumulated practical experience of plasma operation in both limiter and divertor configurations using massive beryllium plasma-facing components. These latter have shown evidence,Expand
Performance of multi-aperture grid extraction systems for an ITER-relevant RF-driven negative hydrogen ion source
The ITER neutral beam system requires a negative hydrogen ion beam of 48 A with an energy of 0.87 MeV, and a negative deuterium beam of 40 A with an energy of 1 MeV. The beam is extracted from aExpand