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STATUS OF THE J-PARC RF ION SOURCE

STATUS OF THE J-PARC RF ION SOURCE
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Structure design and analysis of RF ion source for negative ion source test facility

Review of Scientific Instruments, 2019
A negative ion source acts as a critical part in a neutral beam injector (NBI). A high current ion source is required for the high-power NBI. In this paper, a prototype radio frequency (RF) ion source and its test facility are developed in the Institute of Plasma Physics, Chinese Academy of Sciences, to demonstrate the key technology of the high power ...
Yuming Gu, Yahong Xie, Jianglong Wei
exaly   +3 more sources

An RF ion source model for H-production

Plasma Sources Science and Technology, 2019
Abstract A 1D model of an RF driven ion source based on ionisation by thermal electrons is presented. The RF source differs from traditional filament and arc ion sources because there are no primary electrons present, and is simply composed of an antenna region (driver) and a main plasma discharge region.
I Turner, A J T Holmes, J Zacks, R McAdams   +3 more
openaire   +1 more source

rf Absorption and Ion Heating in Helicon Sources

Physical Review Letters, 2002
Experimental data are presented that are consistent with the hypothesis that anomalous rf absorption in helicon sources is due to electron scattering arising from parametrically driven ion-acoustic waves downstream from the antenna. Also presented are ion temperature measurements demonstrating anisotropic heating (T( perpendicular)>T(parallel)) at the ...
J L, Kline, E E, Scime, R F, Boivin, A M, Keesee, X, Sun, V S, Mikhailenko   +5 more
openaire   +2 more sources

Compact RF ion source for industrial electrostatic ion accelerator

Review of Scientific Instruments, 2015
Korea Multi-purpose Accelerator Complex is developing a single-ended electrostatic ion accelerator to irradiate gaseous ions, such as hydrogen and nitrogen, on materials for industrial applications. ELV type high voltage power supply has been selected.
Hyeok-Jung, Kwon, Sae-Hoon, Park, Dae-Il, Kim, Yong-Sub, Cho   +3 more
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rf improvements for Spallation Neutron Source H− ion source

Review of Scientific Instruments, 2010
The Spallation Neutron Source at Oak Ridge National Laboratory is ramping up the accelerated proton beam power to 1.4 MW and just reached 1 MW. The rf-driven multicusp ion source that originates from the Lawrence Berkeley National Laboratory has been delivering ∼38 mA H− beam in the linac at 60 Hz, 0.9 ms.
Y W, Kang, R, Fuja, R H, Goulding, T, Hardek, S-W, Lee, M P, McCarthy, M C, Piller, K, Shin, M P, Stockli, R F, Welton   +9 more
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Characteristics of multiantenna rf ion source

Review of Scientific Instruments, 2006
We have developed a new multiantenna rf ion source for neutral beam injection and studied the effects of different antennas, connected in parallel, on the hydrogen plasma characteristics. The four-antenna elements 20 cm long are installed inside the 35×35×21 cm3 rectangular bucket chamber. The maximum rf power of 40 kW at 9 MHz is used. The ion current,
T. Shoji, Y. Oka
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Beams of Be+ from an RF ion source

Nuclear Instruments and Methods, 1974
Abstract A conventional radio-frequency ion source for a Van de Graaff accelerator was modified so that it produced beryllium ions when chlorine gas was used in the source. Analyzed Be + -beam currents of 0.15μA were produced. The modification had no effect on the operation of the source when hydrogen or helium were used.
Edwin Norbeck, Richard C. York
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The Frankfurt RF-driven ion source

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2000
Abstract An RF-driven volume ion source based on the high efficiency ion source (HIEFS) has been developed at the Institut fur Angewandte Physik in Frankfurt. The RF-driven ion source operates at a frequency of 3.5 MHz with a maximum duty factor of 10%.
P Beller, R Hollinger, H Klein, A Maaser, K Volk, M Weber   +5 more
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Characteristics of multiantenna rf ion source

Review of Scientific Instruments, 2004
A multiantenna rf ion source is studied. The new antenna system is developed to reduce the rf voltage on the antenna compared to that of the conventional loop antenna, which can reduce high voltage rf breakdown on antennas. The antenna was installed in a 1/6 scale ion source for the neutral beam injector (NBI) (H−) used in large helical devices.
Y. Oka, T. Shoji, M. Hamabe, Y. Sakawa, T. Suzuki, K. Ikeda, O. Kaneko, K. Nagaoka, M. Osakabe, Y. Takeiri, K. Tsumori, E. Asano, T. Kawamoto, T. Kondo, M. Sato   +14 more
openaire   +1 more source