Evaluation of a prototype Isotope Separator Accelerator surface ionization source

1 February 1998

journal article
research article
Published by AIP Publishing in Review of Scientific Instruments

Vol. 69 (2) , 1170-1172
https://doi.org/10.1063/1.1148656

Abstract

A prototype surface ionization source coupled with a fixed-geometry extraction electrode system was commissioned on the Isotope Separator Accelerator (ISAC) ion source test stand at TRIUMF. The suitability of the ion source and extraction system for use in the ISAC facility was determined by a series of emittance measurements of the extracted beams. The test stand optics were successfully commissioned using the prototype ion source; emittance measurements of the mass-separated beams demonstrated that second- and third-order beam aberrations (introduced by the magnetic dipole mass separation) could be corrected by the use of multipole electrostaticoptics elements. An upper limit of the root-mean-square-energy spread (2 eV) was deduced from the emittance measurements. Emittance measurements were performed at beam energies of 10–50 keV, as well as for ion masses ranging from Li + to Rb + , to demonstrate the feasibility of the prototype for a variety of beam energies and masses.

Keywords

This publication has 2 references indexed in Scilit:

An ion source test stand for the ISAC facility at TRIUMF
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1997
An Emittance Scanner for Intense Low-Energy Ion Beams
IEEE Transactions on Nuclear Science, 1983