Laser photodetachment neutraliser for negative ion beams

Kovari, M.; Crowley, B.

doi:10.1016/j.fusengdes.2010.04.055

Cited by 38 publications

(28 citation statements)

References 25 publications

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“…However this geometry is not particularly compatible with the photoneutralizer, which favors narrow beams to minimize the laser power [7]. The non-linear nature of the clump theory can be exploited by introducing an equipotential plane at V/2 volts to bisect the stand-off distance, d, between injectors.…”

Section: ) Injector Stackingmentioning

confidence: 99%

The influence of injector design on neutral beam optimisation for DEMO

Surrey

Benn

Jenkins

et al. 2011

2011 IEEE/NPSS 24th Symposium on Fusion Engineering

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The requirements for neutral beam injection (NBf) on DEMO are assessed and the consequences for the design of the injectors discussed. Optimization of current drive requires NBf within a 2m x 2m envelope in the plasma poloidal cross section at large tangency radii. This is compatible with beam lines of 20m length and moderate high voltage stand-off distances between injectors. However, q-profile control will necessitate at least three beam lines of different injector types and may not be compatible with shinethrough power limits.Material irradiation studies show that there is no significant design issue for radial distances greater than 3m from the tokamak wall.

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Section: ) Injector Stackingmentioning

confidence: 99%

The influence of injector design on neutral beam optimisation for DEMO

Surrey

Benn

Jenkins

et al. 2011

2011 IEEE/NPSS 24th Symposium on Fusion Engineering

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“…The overall beam efficiency, which is defined as a ratio of the injection power to the total electric consumption of the NBI system, is 20-30% with use of the gas neutralizer with 60% of the neutralization efficiency. Considering the economic feasibility, the photo-neutralizer [61,62] with ∼90% of the neutralization efficiency is indispensable to realize the FFHR as a commercial electric plant. The gas-pumping load can be reduced significantly by adopting the photo-neutralizer.…”

Section: Nbimentioning

confidence: 99%

Design activities on helical DEMO reactor FFHR-d1

Sagara

Goto

Miyazawa

et al. 2012

Fusion Engineering and Design

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“…It is clear that large sources make the most efficient use of the envelope and that circular arrays are more economical than rectangular. However this geometry is not particularly compatible with either the photoneutralizer, which favours narrow beams to minimize the laser power [8], or the energy recovery system, which is more efficient for narrow beams.…”

Section: Injector Stackingmentioning

confidence: 99%