Energy recovery experiments with a powerful 100 keV D[sup [minus]] based neutral beam injector

Conference · Mon Oct 05 04:00:00 EDT 1992 · AIP Conference Proceedings (American Institute of Physics); (United States)

OSTI ID:6693015

Fumelli, M; Jequier, F; Pamela, J ^[1]; Hanada, M; Okumura, Y; Watanabe, K ^[2]

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1. Association EURATOM-CEA, CE Cadarache, 13108 St. Paul-Lez-Durance (France)
2. JAERI, Naka-machi, Naga-gun, Ibaraki-ken, 311-01 (Japan)

Energy recovery experiments have been conducted for the first time with a negative ion based neutral beam injector. A new type of energy recovery system was utilized, which: (i) separates electrostatically the neutrals and charged components of the beam at the exit of the neutralizer; (ii) decelerates the residual unneutralized negative ions; (iii) prevents secondary emission of electrons from the negative ion collector by means of electrostatic trapping. With 102 keV, 1.2 A D[sup [minus]] beams, the residual negative ions have been decelerated with high efficiency down to 8 keV. By taking into account the power consumption of the electrostatic deflector, the recovery efficiency of the residual negative ion beam power was as good as 81%, at a background gas operating pressure around 10[sup [minus]3] Pa.

• OSTI ID: 6693015
• Report Number(s): CONF-921145--
• Conference Information: Journal Name: AIP Conference Proceedings (American Institute of Physics); (United States) Journal Volume: 287:1
• Country of Publication: United States
• Language: English

Related Subjects

661220* -- Particle Beam Production & Handling
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700350 -- Plasma Production
Heating
Current Drive
& Interactions-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMP BEAM CURRENTS
BEAM CURRENTS
BEAM INJECTION
BEAM NEUTRALIZATION
BEAMS
CHARGED PARTICLES
CURRENTS
DATA
DESIGN
DEUTERIUM
DEUTERIUM IONS
ENERGY RANGE
ENERGY RECOVERY
EXPERIMENTAL DATA
HYDROGEN ISOTOPES
INFORMATION
ION BEAMS
IONS
ISOTOPES
KEV RANGE
KEV RANGE 100-1000
LIGHT NUCLEI
NEUTRAL ATOM BEAM INJECTION
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
STABLE ISOTOPES
Ta
Targets-- (1992-)