Proceedings Article10.1063/1.1908302
H- Source Developments at CERN
C. E. Hill,D. Küchler,R. Scrivens,T. Steiner +3 more
- 06 Apr 2005
- Vol. 763, Iss: 1, pp 267-274
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TL;DR: In this paper, the authors present the requirements for such a source together with the first results for a prototype microwave driven source, which is used in the LHC and ISOLDE programs.
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Abstract: Future CERN programmes for LHC and ISOLDE require increasing the beam intensity and brightness from the Proton Synchotron Booster (PSB). This could be achieved by injection from a higher energy H− linac. A new injector will require a high performance, high reliability, negative hydrogen ion source. This paper will present the requirements for such a source together with the first results for a prototype microwave driven source.
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Citations
Physics basis and future trends for negative ion sources (invited)a)
TL;DR: In this article, the role of the magnetic filter in negative ion sources is analyzed and the effect of the ion source surfaces (plasma electrode, collar, walls) on negative ion formation is discussed.
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H− source developments at CERN
TL;DR: In this paper, the authors present the results achieved so far with a prototype microwave-driven source operated with three different magnetic structures (multicusp, solenoidal, and a combination of both).
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Physics aspects of negative ion sources
TL;DR: The physical phenomena important in volume and surface production negative hydrogen ion sources are reviewed in this article, and the evolution of the physics of surface production is also described, as well as a measurement effected near the plasma electrode (PE) using two-laser beam photodetachment showed the presence of a directed negative ion flow The ratio of the negative ion and electron currents extracted through the transverse magnetic filter field near the PE can be predicted from a collisional flow model.