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dc.contributor.authorSouthon, John R.  Concept link
dc.contributor.authorSantos, Guaciara M.  Concept link
dc.contributor.authorHan, Baoxi  Concept link
dc.date.accessioned2011-03-09T20:23:54Z
dc.date.available2011-03-09T20:23:54Z
dc.date.issued2007-11
dc.identifier.citationRadiocarbon 49 (2007): 301-306en_US
dc.identifier.urihttps://hdl.handle.net/1912/4389
dc.descriptionAuthor Posting. © Arizona Board of Regents on behalf of the University of Arizona, 2007. This article is posted here by permission of Dept. of Geosciences, University of Arizona for personal use, not for redistribution. The definitive version was published in Radiocarbon 49 (2007): 301-306.en_US
dc.description.abstractWe report on 2 recent developments in an ongoing program of characterizing and improving the National Electrostatics Corp. (NEC) MC-SNICS ion source at University of California (UC) Irvine’s Keck AMS laboratory. First, we have investigated the possibility of modifying a large-body (134-sample) MC-SNICS to incorporate the UC Irvine Cs oven and vacuum-insulated Cs feed tube, which provide better confinement of Cs than the standard NEC setup. In our 40-sample source, the feed tube enters the source housing directly below the ionizer assembly. This area cannot be accessed for machining on the 134-sample source, but we have successfully tested a modified geometry where the delivery tube enters the body via the source end flange. Second, we recently installed a second beam profile monitor in the injection line of our spectrometer to allow us to make online emittance measurements. At full output (150 μA of C– at 55 keV), the emittance of our source at 8 kV sputtering voltage is approximately 40π mm mrad.en_US
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.publisherDept. of Geosciences, University of Arizonaen_US
dc.relation.urihttps://journals.uair.arizona.edu/index.php/radiocarbon/article/view/2929
dc.titleCs feed tests and emittance measurements on a modified MC-SNICS ion source for radiocarbon AMSen_US
dc.typeArticleen_US


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