1986
DOI: 10.1063/1.1139082
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120-kV testing of a 10×40-cm prototype of the U. S. common long pulse neutral beam source

Abstract: The 10 x 40 cm Long Pulse neutral beam source developed at Lawrence Berkeley Laboratory has been selected as the prototype for the design of the U.s. Common Long Pulse Source to be used on TFTR, Doublet-III, and MFTF-B. The Long Pulse Source consists of a magnetic line cusp bucket with an actively cooled backplate electron dump, and a four-grid accelerator using slot apertures and water-cooled molydenum rails. Deuterium testing of the long pulse source at 120 kV, 53 A, and two-second pulse length has been comp… Show more

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Cited by 26 publications
(11 citation statements)
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“…OMA measurements were made near the output of the ion source, where the beam contained both ions and neutrals, andOMA, CEX, RBS, and SIMS measurements were made in the region of the output neutral beam. In addition, interesting preliminary results are given for attempted species measurements using the coincident n- 3 He particles from D-D reactions.…”
Section: Neutral Beam Speciesmentioning
confidence: 99%
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“…OMA measurements were made near the output of the ion source, where the beam contained both ions and neutrals, andOMA, CEX, RBS, and SIMS measurements were made in the region of the output neutral beam. In addition, interesting preliminary results are given for attempted species measurements using the coincident n- 3 He particles from D-D reactions.…”
Section: Neutral Beam Speciesmentioning
confidence: 99%
“…Measurements of species spatial profiles at the exit of the ion source would allow for more accurate total integral OMA species fractions, and eliminate a possible systematic experimental uncertainty in comparing species measurements made r.: different beamline locations and on different beamlines. Hence, the feasibility of measuring individual beam species profiles in the ion source region was explored using the test beamline by attempting to measure the time-of-flight between the n- 3 He reaction fusion products from deuteron beam particles incident on deuterium neutralizer gas. 14 In addition to providing neutral beam species information, the methodology of this measurement could also be applicable to tokamak fusion product studies.…”
Section: Other Species Related Experimentsmentioning
confidence: 99%
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“…The system comprises eight individual ion sources neutralized in pairs on four separate beam boxes and is capable of injecting up to 34 MW at acceleration energies between 45 and 93 kV. The sources are based on the U.S. Common Long Pulse positive ion source [2][3][4][5][6][7] which was developed for the U.S. neutral beam program in the 1980s. As in all such arc discharge sources, the extracted positive ion current is distributed among the atomic and molecular ions D + , D + 2 , D + 3 , with additional small fractions due to such molecular ions as DO + , D 2 O + , and others.…”
Section: Introductionmentioning
confidence: 99%