FAST ION DIAGNOSTIC'S NEUTRAL BEAM INJECTOR ON THE POLOIDAL DIVERTOR EXPERIMENT.

A. Nudelman, Robert James Goldston, R. Kaita

Research output: Contribution to journalConference article

5 Scopus citations

Abstract

The PDX Fast Ion Diagnostic Experiment (FIDE) comprises a Diagnostic Neutral Beam (DNB) and spatially imaging charge-exchange analyzer. The DNB is built around a Lawrence Berkeley Laboratory 40-kv, 10-A, 4-grid ion source. The power requirements are 0. 5 Mw in up to 10-ms-long pulse bursts. The accelerating grid is supplied from a 125-kJ, 50-kv capacitor bank with a hard-tube modulator for switching and pulse burst generation at up to 3 kHz. The filament and arc power are drawn directly from a 480-v ac line through multiphase controlled rectifiers, which provide a soft start for the filament and fast switching for the arc. Special attention was paid to the H-V transmission line, since the power supplies could not be located close to the ion source. The DNB has been tested under actual operating conditions and is now being used in experiments with the charge-exchange analyzer.

Original languageEnglish (US)
Pages (from-to)1218-1221
Number of pages4
JournalJournal of vacuum science & technology
Volume20
Issue number4
DOIs
StatePublished - Jan 1 1981
EventProc of the Natl Symp of the Am Vac Soc, Pt 2 - Anaheim, Calif, USA
Duration: Nov 2 1981Nov 6 1981

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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