Results 171 to 180 of about 40,757 (206)

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

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

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

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

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

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

Experiments with rf ovens in ECR ion sources

Review of Scientific Instruments, 2004
A 34 mm diameter radio frequency (rf) oven system previously developed on bench was inserted and tested into the Electron Cyclotron Resonance (ECR) Ion Source Alice, producing beams from natural copper and silver samples; charge range was typically i=10–13 for copper and i=10–19 for silver, which well compares to previous source yield for xenon ...
M. Cavenago, T. Kulevoy, S. Petrenko
openaire   +1 more source

The Matching Unit for the RF Ion Source at HUST

Journal of Fusion Energy, 2015
A revised L mode matching unit is used for the radio-frequency (RF) ion source test facility at Huazhong University of Science and Technology (HUST). The revised matching unit is composed of a series capacitance, a parallel capacitance and a RF transformer.
Haikun Yue, Dong Li, Peng Zhao, Xiaomin Wang, Xiaofei Li, Dezhi Chen   +5 more
openaire   +1 more source

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

A note on ion beam extraction from an RF ion source

Nuclear Instruments and Methods, 1979
Some measurements of ion beam intensities extracted from a water-cooled rf ion source are presented. These measurements lead to an extraction device, which results in an increase of more than 50% of the extracted ion current. This improvement indicates a possibility of extracting high brilliance ion beams from rf or duoplasmatron ion sources.
openaire   +1 more source