First tests of the TITAN digital RFQ beam cooler and buncher
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A digital RFQ beam cooler and buncher has been developed as part of the TITAN facility. Following a brief review of the theory of ion motion in such a trap, a description of the RFQ and the experimental setup used for initial testing of the trap is given. Results from the tests are also presented. A square-wave-generator, which uses two stacks of six MOSFETs, has been built. The generator has been shown to be able to drive the RFQ with an amplitude of 400 Vpp at up to 1 MHz. The RFQ has been commissioned using a stable ion source and beam pulses with emittances on the order of 8π mm mrad at 4 keV extraction energy have been observed.
KeywordsRFQ confinement Buffer-gas cooling Digital ion trap
PACS29.27.Ac 29.27.Eg 41.85.-p 41.85.Ar
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- 6.Vaz, J.: Precision mass measurements of some isotopes of platinum. Ph.D. thesis, University of Manitoba (2002)Google Scholar
- 10.Ghosh, P.K.: Ion Traps. Oxford University Press, Oxford (1995)Google Scholar
- 11.Meissner, E.: Ueber Schuettelschwingungen in Systemen mit periodisch veraenderlicher Elastizitaet. Schweiz. Bauztg. 72, 95–98 (1918)Google Scholar
- 14.Barnes, M.J., Wait, G.D.: A 25 kV, 75 kHz, kicker for measurement of muon lifetime. In: Giesselmann, M. (ed.) PPC-2003:14th IEEE International Pulsed Power Conference: Digest of Technical Papers, vol. 2, pp. 1407–1410. Dallas, Texas, 15-18 June 2003, (2003)Google Scholar
- 16.Smith, M.: A square-wave-driven radiofrequency cooler and buncher for TITAN. M.Sc. thesis, University of British Columbia (2005)Google Scholar
- 18.Hadary, O., Barnes, M., Wait, G.: Distributed Capacitance of TITAN RFQ Driver and RFQ Structure, Extraction Electrode Considerations and Power Dissipation in the Driver. TRIUMF Design Note, TRI-DN-04-26 (2004)Google Scholar