Square and sine wave modulation of the beam from a 3 MeV Van de Graaff accelerator

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dc.contributor.authorFraser, HJen_AU
dc.contributor.authorRitchie, AIMen_AU
dc.contributor.authorWhittlestone, Sen_AU
dc.date.accessioned2007-11-22T04:34:17Zen_AU
dc.date.accessioned2010-04-30T04:42:05Zen_AU
dc.date.available2007-11-22T04:34:17Zen_AU
dc.date.available2010-04-30T04:42:05Zen_AU
dc.date.issued1967-09en_AU
dc.description.abstractMethods of producing square and sine wave modulation of a 3 MeV Van de Graaff accelerator are described. Square pulses are produced at frequencies from 100kc/s to d.c. with up to a 100 per cent duty cycle and a minimum pulse length of 8 μs. The ratio of the off-current level to the on-current level is less than 5 x 10 -4 and can be further reduced by a post-acceleration deflection system to less than 10 -5. The unit, which is triggered from a command pulse external to the machine, is in the top terminal of the Van de Graaff and has shown itself to be highly reliable over some 1,000 hours of machine operation. The sine wave modulation unit described here operates in the range 80-1000 c/s with a modulation depth of up to 90 per cent and higher harmonic contamination of less than 1 per cent.en_AU
dc.identifier.citationFraser, H. J., Ritchie, I. M., & Whittlestone, S. (1967). Square and sine wave modulation of the beam from a 3 mev van de graaff accelerator (AAEC/TM400). Lucas Heights, NSW: Research Establishment, Australian Atomic Energy Commission.en_AU
dc.identifier.govdoc905en_AU
dc.identifier.otherAAEC-TM-400en_AU
dc.identifier.placeofpublicationLucas Heights, New South Walesen_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/896en_AU
dc.language.isoen_auen_AU
dc.publisherAustralian Atomic Energy Commissionen_AU
dc.subjectVan de Graaff acceleratorsen_AU
dc.subjectModulationen_AU
dc.subjectWave functionsen_AU
dc.subjectContaminationen_AU
dc.subjectDiagramsen_AU
dc.titleSquare and sine wave modulation of the beam from a 3 MeV Van de Graaff acceleratoren_AU
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