1. Installation of a versatile multiaperture negative ion source
- Author
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M. Bigi, S. Petrenko, Gianluigi Serianni, Roberto Pasqualotto, Matteo Valente, M. De Muri, M. Recchia, Marco Barbisan, A. Minarello, T. Kulevoy, F. Fellin, M. Poggi, F. Rossetto, Marco Cavenago, Enrico Fagotti, Pierluigi Veltri, M. Sattin, and V. Antoni
- Subjects
Source optimization ,Optical cavities ,Test bench ,Materials science ,Ion beam ,Spectrometer ,Nuclear engineering ,Rf ion sources ,Neutral beam injectors (NBI) ,Multi aperture ,Acceleration voltage ,Negative ions ,Ion source ,Light measurement ,Small sampling ,Nuclear reactors ,Cooling circuits ,Ion sources ,Acceleration voltages ,Instrumentation ,Low voltage ,Beam (structure) ,Voltage - Abstract
Neutral Beam Injectors (NBI), which need to be strongly optimized in the perspective of DEMO reactor, request a thorough understanding of the negative ion source used and of the multi-beamlet optics. A relatively compact RF ion source, named NIO1 (Negative Ion Optimization 1), with 9 beam apertures for a total H(-) current of 130 mA, 60 kV acceleration voltage, is being installed at Padua, in Consorzio RFX, to provide a test bench for source optimizations in the framework of the accompanying activities in support to the ITER NBI test facility. NIO1 construction and status of the overall installation, including a high voltage deck and an optical cavity ring down spectrometer are here summarized and reported. Plasma and low voltage beam operations are discussed. Development of a sampling beam calorimeter (with small sampling holes, and a segmented cooling circuit) is also discussed.
- Published
- 2014
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