The ANSTO isotope cycling system

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dc.contributor.authorWatt, GCen_AU
dc.contributor.authorBoronkay, Sen_AU
dc.contributor.authorSmith, AMen_AU
dc.contributor.authorHotchkis, MACen_AU
dc.date.accessioned2020-03-23T23:52:26Zen_AU
dc.date.available2020-03-23T23:52:26Zen_AU
dc.date.issued2016-02-09en_AU
dc.date.statistics2020-03-20en_AU
dc.description.abstractA number of electronic systems are used on the ANTARES accelerator at ANSTO to implement its fast cycling accelerator mass spectrometry (AMS) capability. The fast cycling system was originally installed and commissioned in 1993 and has recently been updated. This paper describes the more significant of the electronic systems, such as the controller ("sequencer"), the high-voltage power supply ("bouncer"), the fast electrostatic beam chopper, and those used for measurement of the pulsed ion beam current. The sequencer, a programmable 15-bit digital pulse generator, generates the timing and sequencing of the control signals for bouncing voltage selection, beam chopping, Faraday cup current measurement, and rare isotope event measurement. The new sequencer is implemented using a National Instruments FPGA (field programmable gate array) card, programmed using LabVIEW 2010. This device has the benefits of host CPU-independent operation, simple interfacing (PCI), a small footprint, off-the-shelf availability at modest cost, and ease of functionality upgrade. The sequencer provides 15 synchronous digital signals, whose "on" and "off" transitions can be independently specified, in both number and time, with a time resolution of between 0.5 and 128 μs, and with the total duration between repetitions adjustable between 65.5 ms and 8.4 s per cycle. It is hosted by a generic PC because of the low-cost and ubiquity of these. The stand-alone FPGA-based approach ensures that the sequencer determinism is unaffected by processes executing in the host CPU. © 2013 Arizona Board of Regents on behalf of the University of Arizonaen_AU
dc.identifier.citationWatt, G. C., Boronkay, S., Smith, A. M., & Hotchkis, M. A. C. (2013). The ANSTO isotope cycling system. Radiocarbon, 55(2), 308-318. doi:10.1017/S0033822200057416en_AU
dc.identifier.govdoc8626en_AU
dc.identifier.issn1945-5755en_AU
dc.identifier.issue2en_AU
dc.identifier.journaltitleRadiocarbonen_AU
dc.identifier.pagination308-318en_AU
dc.identifier.urihttps://doi.org/10.1017/S0033822200057416en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/9201en_AU
dc.identifier.volume55en_AU
dc.language.isoenen_AU
dc.publisherCambridge University Pressen_AU
dc.subjectANSTOen_AU
dc.subjectAcceleratorsen_AU
dc.subjectMass spectroscopyen_AU
dc.subjectIon beamsen_AU
dc.subjectFaraday cupsen_AU
dc.subjectArray processorsen_AU
dc.subjectIsotopesen_AU
dc.titleThe ANSTO isotope cycling systemen_AU
dc.typeJournal Articleen_AU
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