Negative ion production in the RF multiaperture surface-plasma source

Abdrashitov, G. F.; Belchenko, Yu. I.; Dranichnikov, A.; Иванов, А. А.; Gorbovsky, A. I.; Kapitonov, V. A.; Kolmogorov, V. V.; Kondakov, A. A.; Konstantinov, S. G.; Sanin, A.; Selivanov, A. N.; Selivanov, P. A.; Shikhovtsev, I. V.; Sotnikov, O.; Stupishin, N.; Tiunov, M.; Binderbauer, Michl; Putvinski, S.; Smirnov, A.; Sevier, L.

doi:10.1063/1.4916444

Cited by 9 publications

(1 citation statement)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The experimental results of this study are presented below. The effect of cesium deposition on beam production in the source is discussed in the accompanying paper [12]. contacts with the plasma grid (PG in Fig.…”

Section: Introductionmentioning

confidence: 99%

Operation of RF driven negative ion source in a pure-hydrogen mode

Abdrashitov

Belchenko

Ivanov

et al. 2015

AIP Conference Proceedings

Self Cite

View full text Add to dashboard Cite

Abstract. The production of negative hydrogen ions in the radio-frequency driven long-pulsed source with external antenna is studied. RF drivers with various geometry of external antenna, Faraday shield and magnets at the rear flange were examined. H-beam extraction through the single emission aperture was performed in the source pure-hydrogen mode with no external seed of alkali additives. H-beam with ion emission current density up to 5 mA/cm 2 and energy up to 75 keV was regularly obtained in the 1 s pulses of the pure-hydrogen mode. The regular temporal increase of H-ion production due to deposition of impurities on the plasma grid surface was recorded. The H-emission current density increased up to 9 mA/cm 2 in this case.

show abstract

Section: Introductionmentioning

confidence: 99%

Operation of RF driven negative ion source in a pure-hydrogen mode

Abdrashitov

Belchenko

Ivanov

et al. 2015

AIP Conference Proceedings

Self Cite

View full text Add to dashboard Cite

show abstract

Inductively driven surface-plasma negative ion source for N-NBI use (invited)

Belchenko

Abdrashitov

Deichuli

et al. 2016

Review of Scientific Instruments

View full text Add to dashboard Cite

The long-pulse surface-plasma source prototype is developed at Budker Institute of Nuclear Physics for negative-ion based neutral beam injector use. The essential source features are (1) an active temperature control of the ion-optical system electrodes by circulation of hot thermal fluid through the channels, drilled in the electrode bodies, (2) the concaved transverse magnetic field in the extraction and acceleration gaps, preventing the electrons trapping and avalanching, and (3) the directed cesium deposition via distribution tubes adjacent to the plasma grid periphery. The long term effect of cesium was obtained just with the single cesium deposition. The high voltage strength of ion-optical system electrodes was improved with actively heated electrodes. A stable H(-) beam with a current ∼1 A and energy 90 keV was routinely extracted and accelerated.

show abstract