2004
DOI: 10.1063/1.1702107
|View full text |Cite
|
Sign up to set email alerts
|

High power beam injection using an improved negative ion source for the large helical device

Abstract: In this article we describe the first results of beam injection using an improved negative ion source, which consists of a set of steering and multislot grounded grids. The set of the grids is designed to achieve high power beam injection for the large helical device (LHD). The main purpose in replacing the conventional multiaperture with multislot grids is to reduce the heat load onto the grid. By adopting the multislot grid, the frequency of voltage breakdown at the acceleration gap decreased considerably an… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1
1

Citation Types

0
8
0

Year Published

2005
2005
2024
2024

Publication Types

Select...
7
2

Relationship

3
6

Authors

Journals

citations
Cited by 30 publications
(8 citation statements)
references
References 11 publications
0
8
0
Order By: Relevance
“…The result was remarkable. The conditioning time reduced much, and the designed beam energy was obtained very quickly even though it was the first achievement of designed beam energy [12]. It is also noted that the heat load on the grounded grid reduced to about a half of multi-aperture grid, which is consistent with the increase of transparency of the grid aperture.…”
Section: High Energy Beam Accelerationmentioning
confidence: 60%
“…The result was remarkable. The conditioning time reduced much, and the designed beam energy was obtained very quickly even though it was the first achievement of designed beam energy [12]. It is also noted that the heat load on the grounded grid reduced to about a half of multi-aperture grid, which is consistent with the increase of transparency of the grid aperture.…”
Section: High Energy Beam Accelerationmentioning
confidence: 60%
“…By means of the developed high transparent accelerator including the slot Grounded Grid (GG) [19,20], intense Hbeam injection with the current of 37 A (340 A/m 2 ), which is beyond the ITER requirement: 280 A/m 2 for Hand 200 A/m 2 for D -, has been achieved [16]. The current density of Hion as a function of beam energy is shown in Fig.…”
Section: ) Nbimentioning
confidence: 99%
“…In nuclear fusion, a high-energy and high-current beam system with large electrodes has been adopted for plasma heating, current drive, momentum injection and diagnostics. [1][2][3][4][5][6][7][8] In plasma application, a relatively low energy and low current beam system with small electrodes has been adopted for etching, deposition, implantation and surface modification, 9,10) while a focused ion beam (FIB) with a high energy and a low current has been used for the nano-order precise processing of materials. Recently, the use of reactive beam techniques has been extended to many fields, such as semiconductor and aerospace industries, tribology, medical and environmental applications.…”
Section: Introductionmentioning
confidence: 99%