Performance of upgraded JET neutral beam injectors

Performance of upgraded JET neutral beam injectors

The JET neutral beam injection (NBI) system is undergoing an upgrade of both beam power and pulse duration, which will be completed in 2011. In order to obtain an early assessment of the performance of the upgraded injectors, two positive ion neutral injectors (PINIs) with modified ion source and ac...

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Veröffentlicht in:Fusion engineering and design 2011-10, Vol.86 (6), p.509-512
Hauptverfasser: Ćirić, D., Ash, A.D., Crowley, B., Day, I.E., Gee, S.J., Hackett, L.J., Homfray, D.A., Jenkins, I., Jones, T.T.C., Keeling, D., King, D.B., King, R.F., Kovari, M., McAdams, R., Surrey, E., Young, D., Zacks, J.
Format: Artikel
Sprache:eng
Schlagworte:
Accelerators
Applied sciences
Assessments
Autumn
Controled nuclear fusion plants
Design engineering
Deuterium
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Injectors
Installations for energy generation and conversion: thermal and electrical energy
Ion sources
JET
Neutral beam injection
Neutral beams
Particle beams
Plasma heating
Tokamak
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Zusammenfassung:The JET neutral beam injection (NBI) system is undergoing an upgrade of both beam power and pulse duration, which will be completed in 2011. In order to obtain an early assessment of the performance of the upgraded injectors, two positive ion neutral injectors (PINIs) with modified ion source and accelerator configuration were installed on Octant 8 Neutral Injector Box and successfully commissioned in summer 2009. Both PINIs were routinely delivering ∼2 MW of deuterium neutral beam power during the JET experimental campaign in autumn 2009. These early tests allowed us to predict with confidence that the JET NBI upgrade objective of injecting 34 MW of total deuterium neutral beam power into the JET plasma will be achieved.
ISSN:0920-3796
1873-7196
DOI:10.1016/j.fusengdes.2010.11.035