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- W1650895061 abstract "High power neutral beam injectors were made possible around 1970, by the application of multi-aperture extraction systems on large sources. Four types of ion sources are to date in the front line: the duopigatron, the field free LBL source, the periplasmatron and the Bucket-source. These are described and compared. Multi-aperture and multi-slit type extraction systems are treated. At lower energy (< 50 kW), direct acceleration with three grids systems are used, at higher energies four grid systems with post acceleration are needed. Ion-optics and focussing methods are important for good transmission. Heat deposition in the grids is a problem. Overall transmission of the neutral beams is perturbated by different mechanisms. The residual charged beam fraction can be handled either by magnetic deflection and deposition on a beam dump, or by an electrostatic beam dump or energy recovery system. Important elements are furthermore the high voltage circuitry, the pumping system and the control system. An example of a complete injection line is given. For high energy beams (ED > 200 keV) injectors based on negative ions should be used. These are far less developed. Different sources of negative ions are considered and basic ideas for negative ion neutral injectors are shortly reviewed." @default.
- W1650895061 created "2016-06-24" @default.
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- W1650895061 date "1979-01-01" @default.
- W1650895061 modified "2023-09-25" @default.
- W1650895061 title "NEUTRAL BEAM INJECTORS" @default.
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- W1650895061 doi "https://doi.org/10.1016/b978-0-08-024459-4.50021-2" @default.
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