A 100 keV operation of a large vacuum‐immersed H− ion source

Y. Oka; O. Kaneko; Y. Takeiri; K. Tsumori; A. Ando; E. Asano; R. Akiyama; T. Kawamoto; T. Kuroda

doi:10.1063/1.1146747

A 100 keV operation of a large vacuum‐immersed H⁻ ion source

Y. Oka, O. Kaneko, Y. Takeiri, K. Tsumori, A. Ando, E. Asano, R. Akiyama, T. Kawamoto, T. Kuroda

Research output: Contribution to journal › Article

3 Citations (Scopus)

Abstract

A large vacuum‐immersed H⁻ ion source has been operated on the negative‐ion‐based neutral beam teststand. The achieved level of the beam and the pulse duration in beam conditioning were limited by a high‐voltage breakdown in the vacuum vessel. A baffle plate at grounded potential for shielding completely from the charged particles was successful. A beam with an energy of up to 102 keV and the H⁻ ion current of 0.55 A were achieved for 0.29 s without the breakdown. The ion current of ∼1.5 A was accelerated in cesium‐seeded operation. The corresponding ion current density was ∼7 mA/cm². A magnetic filter (as Type I LV magnetic filter) on the plasma electrode was applied. The electron beam component which was extracted from the plasma source together with H⁻ ions was found to be very reduced.

Original language	English
Pages (from-to)	1029-1031
Number of pages	3
Journal	Review of Scientific Instruments
Volume	67
Issue number	3
DOIs	https://doi.org/10.1063/1.1146747
Publication status	Published - 1996 Mar
Externally published	Yes

Keywords

AMP BEAM CURRENTS
ELECTROSTATIC ACCELERATORS
HYDROGEN IONS 1 MINUS
ION SOURCES
KEV RANGE 100−1000
NEUTRAL ATOM BEAM INJECTION
PLASMA
VACUUM SYSTEMS

ASJC Scopus subject areas

Instrumentation

Access to Document

10.1063/1.1146747

Fingerprint Dive into the research topics of 'A 100 keV operation of a large vacuum‐immersed H<sup>−</sup> ion source'. Together they form a unique fingerprint.

Cite this

Oka, Y., Kaneko, O., Takeiri, Y., Tsumori, K., Ando, A., Asano, E., Akiyama, R., Kawamoto, T., & Kuroda, T. (1996). A 100 keV operation of a large vacuum‐immersed H⁻ ion source. Review of Scientific Instruments, 67(3), 1029-1031. https://doi.org/10.1063/1.1146747

@article{ca6c467355e34869aa2e05dead274292,

title = "A 100 keV operation of a large vacuum‐immersed H− ion source",

abstract = "A large vacuum‐immersed H− ion source has been operated on the negative‐ion‐based neutral beam teststand. The achieved level of the beam and the pulse duration in beam conditioning were limited by a high‐voltage breakdown in the vacuum vessel. A baffle plate at grounded potential for shielding completely from the charged particles was successful. A beam with an energy of up to 102 keV and the H− ion current of 0.55 A were achieved for 0.29 s without the breakdown. The ion current of ∼1.5 A was accelerated in cesium‐seeded operation. The corresponding ion current density was ∼7 mA/cm2. A magnetic filter (as Type I LV magnetic filter) on the plasma electrode was applied. The electron beam component which was extracted from the plasma source together with H− ions was found to be very reduced.",

keywords = "AMP BEAM CURRENTS, ELECTROSTATIC ACCELERATORS, HYDROGEN IONS 1 MINUS, ION SOURCES, KEV RANGE 100−1000, NEUTRAL ATOM BEAM INJECTION, PLASMA, VACUUM SYSTEMS",

author = "Y. Oka and O. Kaneko and Y. Takeiri and K. Tsumori and A. Ando and E. Asano and R. Akiyama and T. Kawamoto and T. Kuroda",

year = "1996",

month = mar,

doi = "10.1063/1.1146747",

language = "English",

volume = "67",

pages = "1029--1031",

journal = "Review of Scientific Instruments",

issn = "0034-6748",

publisher = "American Institute of Physics Publising LLC",

number = "3",

}

TY - JOUR

T1 - A 100 keV operation of a large vacuum‐immersed H− ion source

AU - Oka, Y.

AU - Kaneko, O.

AU - Takeiri, Y.

AU - Tsumori, K.

AU - Ando, A.

AU - Asano, E.

AU - Akiyama, R.

AU - Kawamoto, T.

AU - Kuroda, T.

PY - 1996/3

Y1 - 1996/3

N2 - A large vacuum‐immersed H− ion source has been operated on the negative‐ion‐based neutral beam teststand. The achieved level of the beam and the pulse duration in beam conditioning were limited by a high‐voltage breakdown in the vacuum vessel. A baffle plate at grounded potential for shielding completely from the charged particles was successful. A beam with an energy of up to 102 keV and the H− ion current of 0.55 A were achieved for 0.29 s without the breakdown. The ion current of ∼1.5 A was accelerated in cesium‐seeded operation. The corresponding ion current density was ∼7 mA/cm2. A magnetic filter (as Type I LV magnetic filter) on the plasma electrode was applied. The electron beam component which was extracted from the plasma source together with H− ions was found to be very reduced.

AB - A large vacuum‐immersed H− ion source has been operated on the negative‐ion‐based neutral beam teststand. The achieved level of the beam and the pulse duration in beam conditioning were limited by a high‐voltage breakdown in the vacuum vessel. A baffle plate at grounded potential for shielding completely from the charged particles was successful. A beam with an energy of up to 102 keV and the H− ion current of 0.55 A were achieved for 0.29 s without the breakdown. The ion current of ∼1.5 A was accelerated in cesium‐seeded operation. The corresponding ion current density was ∼7 mA/cm2. A magnetic filter (as Type I LV magnetic filter) on the plasma electrode was applied. The electron beam component which was extracted from the plasma source together with H− ions was found to be very reduced.

KW - AMP BEAM CURRENTS

KW - ELECTROSTATIC ACCELERATORS

KW - HYDROGEN IONS 1 MINUS

KW - ION SOURCES

KW - KEV RANGE 100−1000

KW - NEUTRAL ATOM BEAM INJECTION

KW - PLASMA

KW - VACUUM SYSTEMS

UR - http://www.scopus.com/inward/record.url?scp=0006664561&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0006664561&partnerID=8YFLogxK

U2 - 10.1063/1.1146747

DO - 10.1063/1.1146747

M3 - Article

AN - SCOPUS:0006664561

VL - 67

SP - 1029

EP - 1031

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

SN - 0034-6748

IS - 3

ER -