Characterization of plasma ion source utilizing anode spot with positively biased electrode for stable and high-current ion beam extraction

2011 ◽  
Vol 82 (12) ◽  
pp. 123303 ◽  
Author(s):  
Yeong-Shin Park ◽  
Yuna Lee ◽  
Kyoung-Jae Chung ◽  
Y. S. Hwang
Keyword(s):  
Ion Beam ◽  
Ion Source ◽  
Beam Extraction ◽  
High Current ◽  
Anode Spot ◽  
Plasma Ion Source

High‐current metal ion beam extraction from a multicusp ion source

1990 ◽  
Vol 61 (1) ◽  
pp. 538-540 ◽  
Author(s):  
Yutaka Inouchi ◽  
Hideki Tanaka ◽  
Hiroshi Inami ◽  
Fumio Fukumaru ◽  
Kouzi Matsunaga
Keyword(s):  
Metal Ion ◽  
Ion Beam ◽  
Ion Source ◽  
Beam Extraction ◽  
High Current ◽  
Multicusp Ion Source

Experimental Results of Ion Beam Extraction of High-Current Ion Source for EAST Neutral Beam Injector

2013 ◽  
Vol 32 (4) ◽  
pp. 513-517 ◽  
Author(s):  
Ya Hong Xie ◽  
◽  
Chun Dong Hu ◽  
Sheng Liu ◽  
Cai Chao Jiang ◽  
...  
Keyword(s):  
Ion Beam ◽  
Ion Source ◽  
Experimental Results ◽  
Neutral Beam ◽  
Beam Extraction ◽  
High Current ◽  
Neutral Beam Injector

scholarly journals SPES: EXOTIC BEAMS FOR NUCLEAR PHYSICS STUDIES

2014 ◽  
Vol 27 ◽  
pp. 1460145 ◽  
Author(s):  
ALBERTO ANDRIGHETTO ◽  
MATTIA MANZOLARO ◽  
STEFANO CORRADETTI ◽  
DANIELE SCARPA ◽  
JESU VASQUEZ ◽  
...  
Keyword(s):  
Nuclear Physics ◽  
Ion Beam ◽  
Ion Source ◽  
Beam Power ◽  
Critical Element ◽  
Laser Ion Source ◽  
The Status ◽  
Direct Target ◽  
Neutron Rich Isotopes ◽  
Plasma Ion Source

The SPES project at Laboratori di Legnaro of INFN (Italy) is concentrating on the production of neutron-rich radioactive nuclei for nuclear physics experiments using uranium fission at a rate of 1013 fission/s. The emphasis on neutron-rich isotopes is justified by the fact that this vast territory has been little explored. The Radioactive Ion Beam (RIB) will be produced by the ISOL technique using proton induced fission on a direct target of UCx. The most critical element of the SPES project is the Multi-Foil Direct Target. Up to the present time, the proposed target represents an innovation in terms of its capability to sustain the primary beam power. This talk will present the status of the project financed by INFN, which is actually in the construction phase at Legnaro. In particular, developments related to the target and the ion-source activities using the surface ion source, plasma ion source, and laser ion source techniques will be reported.

Analysis of the Effect of Beam Divergence Angle on Back-Streaming Electron Region in Ion Source for EAST-Neutral Beam Injection

2018 ◽  
Vol 4 (3) ◽  
Author(s):  
Hu Chundong ◽  
Wu Mingshan ◽  
Xie Yahong ◽  
Wei Jianglong ◽  
Yu Ling
Keyword(s):  
Ion Beam ◽  
Ion Source ◽  
Neutral Beam Injection ◽  
Beam Divergence ◽  
Neutral Beam ◽  
Divergence Angle ◽  
Beam Extraction ◽  
Beam Injection ◽  
Back Plate ◽  
Beam Divergence Angle

During the process of beam extraction in positive ion source under high voltage region, a large number of electrons are produced in the gaps of grids. After back-streaming acceleration, these electrons go back to arc chamber or impinge grids and then heat back plate or grids, which are harmful for the safety of ion source. Under the situation of poor beam extraction optics, a large part of the primary beam ions bombard the surface of suppressor grid (SG). And this process produces a large number of electrons. Due to the huge extracted voltage, the secondary electron emission coefficient of the SG surface is also high. As a result, the grids' current grows. According to the measurement of the current of SG and the calculation of the perveance of the corresponding shoot, the effect of ion beam divergence angle on back-streaming electrons can be analyzed. When the beam divergence angle increases, the number of back-streaming electrons increases rapidly, and grids' current changes significantly, especially the current of gradient grid and SG. The results can guide the parameters operating on the ion source for Experimental Advanced Superconducting Tokamak-neutral beam injection (EAST-NBI) and find the reasonable operation interval of perveance and to ensure the safety and stable running of the ion source, which has great significance on the development of long pulse, high power ion source.

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