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Persistent URL http://purl.org/net/epubs/work/64517
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Record Id 64517
Title An Experimental Investigation of Slow Integer Tune Crossing in the EMMA Non-scaling FFAG
Abstract Results are presented from a slow integer tune crossing experiment performed in the EMMA ns-FFAG accelerator. Under nominal conditions EMMA accelerates an electron beam from 10 to 20 MeV rapidly in 5 to 10 turns in a novel serpentine channel causing several transverse integer tunes to be crossed. During this rapid acceleration it has been shown that the amplitude of the beam does not grow If the potential of non-scaling FFAGs were to be realised in such fields as high-current proton acceleration then tune space would be crossed slower with acceleration in an RF bucket. The crossing speed in a non-scaling FFAG is in a previously unstudied intermediate region and hence conventional crossing theory may not apply. It was proposed to observe the effects on beam oscillation amplitude when a beam crosses integer tunes by the variation of tune with momentum over a range of crossing speeds derived from different acceleration rates. This method can be realised by synchrotron acceleration inside a stable RF bucket. Betatron amplitude growth and beam loss as a function of turn are explored when crossing integer tunes.
Organisation ASTeC , ASTeC-AP , ASTeC-IB , CI , STFC
Keywords ASTeC 2013-2014 , Physics , EMMA
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Language English (EN)
Type Details URI(s) Local file(s) Year
Paper In Conference Proceedings In 3rd International Particle Accelerator Conference (IPAC'12), New Orleans, Louisiana, USA, 20-25 May 2012, (2012). http://accelconf.…/papers/moppd021.pdf 2012