Results 261 to 270 of about 5,097,999 (301)

RF Negative Ion Sources and Polarized Ion Sources

2016
The requirement of a neutral beam injection system with hydrogen or deuterium beam energy up to 1 MeV for the ITER project has recently triggered new research on negative ion sources, from production to acceleration and neutralization before the injection in the tokamak.
N. Ippolito, F. Taccogna, P. Minelli, V. Variale, N. Colonna   +4 more
openaire   +1 more source

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
openaire   +1 more source

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

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, Yongjian Xu, Jun Li, Caichao Jiang, Lizhen Liang, Yuanlai Xie, Chundong Hu   +8 more
openaire   +2 more sources

Ion analysis of rf-excited deuterium ion sources

Nuclear Instruments and Methods, 1971
Measurements have been made of the D1+, D2+ and D3+ ion output from glass- and alumina-walled rf ion sources designed for use in high-output sealed-off D/T neutron generators. Although in a sealed-off neutron generator, the ion source necessarily contains a large ecoled metal surface to absorb highpower secondary electrons from the ion accelerator ...
D.S. Stark, A.W.J. Manley
openaire   +1 more source

Characterization of an RF plasma ion source for ion implantation

AIP Conference Proceedings, 2012
A novel inductively coupled RF plasma ion source has been developed for use in a beamline ion implanter. Ion density data have been taken with an array of four Langmuir probes spaced equally at the source extraction arc slit. These provide ion density uniformity information as a function of source pressure, RF power and gas mixture composition.
Peter M. Kopalidis, Zhimin Wan
openaire   +1 more source

Thermal model of RF ion thrusters and ion sources

Journal of Surface Investigation. X-ray, Synchrotron and Neutron Techniques, 2015
A model for calculating the temperature in an ion source with plasma heating by a radio-frequency MHz electromagnetic field is presented. The heat fluxes caused by the discharge plasma distributed over the ion-source surfaces are determined. In the model it is accepted that the heat transfer between ionsource elements is performed by radiation and heat
V. K. Abgaryan, K. I. Kruglov
openaire   +1 more source

A Novel RF Power Source for the ESS-Bilbao Ion Source

2023
This paper presents the improvements in the ESS Bilbao Proton Ion Source by replacing the amplified radio frequency (RF) pulse of a Klystron-based amplification system using a Solid-State Power Amplifier (SSPA). This new amplification system is based on a 1kW SSPA (2.7 GHz), a Compact-RIO (cRIO) device, a voltage-controlled RF attenuator and auxiliary ...
Masa, Sergio, Bustinduy, Ibon, González, Pedro, Kaftoosian, Arash, Medina, Laura Catalina, Miracoli, Rosalba, Varnasseri, Seadat   +6 more
openaire   +1 more source

Modeling of the rf discharge initiation in a negative ion source

Review of Scientific Instruments, 2010
The maintenance free rf ion source is expected to be one of the most promising candidates for the negative ion sources of plasma heating for future fusion reactors. As an alternative to the arc-discharge sources, the rf negative ion sources have been developed for H− production.
S, Yoshinari, T, Hayami, R, Terasaki, A, Hatayama, A, Fukano   +4 more
openaire   +2 more sources

Gas Flow Regulator for an rf Ion Source

Review of Scientific Instruments, 1962
An apparatus is designed for regulating the plasma density in an ion source for beam injection in a Van de Graaff accelerator. The plasma density is stabilized by maintaining the oscillator power output constant by means of a servo system controlling the pressure in the discharge tube.
B. L. White, L. P. Robertson, K. L. Erdman, J. R. MacDonald   +3 more
openaire   +1 more source