Initial comparative performances of conventional “surface” and “volume” type, all-permanent-magnet, ECR ion sources (abstract)Y. Liu, G. D. Alton, H. Bilheux, J. M. Cole, and F. W. Meyer Citation: Review of Scientific Instruments 75, 1436 (2004); doi: 10.1063/1.1702088 View online: http://dx.doi.org/10.1063/1.1702088 View Table of Contents: http://scitation.aip.org/content/aip/journal/rsi/75/5?ver=pdfcov Published by the AIP Publishing Articles you may be interested in Design of an AllPermanentMagnet, VolumeType, 10GHz ECR Ion Source With FieldForming Iron Yoke AIP Conf. Proc. 749, 199 (2005); 10.1063/1.1893399 An AllPermanent Magnet ECR Ion Source for the ORNL MIRF Upgrade Project AIP Conf. Proc. 749, 123 (2005); 10.1063/1.1893380 The design of a high charge state all permanent ECR ion source Rev. Sci. Instrum. 75, 1514 (2004); 10.1063/1.1691506 Initial Testing of the 6 GHz, AllPermanent Magnet, “VolumeType” ECR ion Source AIP Conf. Proc. 680, 1058 (2003); 10.1063/1.1619890 Design of an all-permanent-magnet ECR ion source at the Cyclotron and Radioisotope Center Rev. Sci. Instrum. 73, 589 (2002); 10.1063/1.1429308

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Initial comparative performances of conventional ‘‘surface’’ and ‘‘volume’’type, all-permanent-magnet, ECR ion sources „abstract …

Y. Liu, G. D. Alton,a) H. Bilheux, J. M. Cole, and F. W. MeyerOak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831-6368

~Presented on 8 September 2003; published 13 May 2004!

An all-permanent-magnet, 6 GHz ‘‘volume-type,’’ flat central-field concept ECR ion source hasbeen constructed and initially evaluated at the Holifield Radioactive Ion Beam Facility, Oak RidgeNational Laboratory. The source is designed so that it can be easily converted from a flat-Bconfiguration to the traditional minimum-B configuration and vice versa, so that comparisons can bemade of the performances of the source in the ‘‘volume’’ ECR and ‘‘surface’’ ECR modes ofoperation under the same conditions. Descriptions of the source, the experimental equipment, andthe procedures for evaluation are given, and comparisons of the performances of bothvolumeandsurfacemodes of operation are presented with and without gas mixing. The present studies clearlyshow that the volume ECR configuration is superior to the surface configuration in terms ofcharge-state distribution and intensity within a particular charge state, under the same operatingconditions. © 2004 American Institute of Physics.@DOI: 10.1063/1.1702088#

a!Electronic mail: gda@ornl.gov

REVIEW OF SCIENTIFIC INSTRUMENTS VOLUME 75, NUMBER 5 MAY 2004

14360034-6748/2004/75(5)/1436/1/$20.00 © 2004 American Institute of Physics

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