Radio-frequency quadrupole

A radio-frequency quadrupole (RFQ) is a linear accelerator component[1] generally used at low beam energies, roughly 50keV to 3MeV. It is similar in concept to a quadrupole mass analyser but its purpose is to accelerate a single-species beam (rather than perform mass spectrometry on a multiple-species beam).

The Radio-frequency quadrupole from the reaccelerator (ReA3) at the National Superconducting Cyclotron Laboratory (NSCL) at Michigan State University.
See also: Quadrupole mass analyzer and RFQ Beam Coolers

The RFQ is a combined-function component that both accelerates and focuses the beam of charged particles.

Invented by Soviet physicists I. M. Kapchinsky and Vladimir Teplyakov in 1970, the RFQ is used as an injector by major laboratories and industries throughout the world for radiofrequency linear accelerators.[2]

References
  1. "The ISIS neutron source RFQ" (PDF).
  2. Reiser, Martin (2008). Theory and design of charged particle beams (2nd ed.). Weinheim: Wiley-VCH. p. 6. ISBN 9783527407415.
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