Acceleration of H^- ions for the Cyclotron Institute Upgrade Project
Abstract
The Cyclotron Institute at Texas A&M University is undergoing an upgrade that will allow for the production of radioactive ions for nuclear physics experiments. These ions will be produced with one of two ion guides, then collected, charge boosted and reaccelerated in the K500 cyclotron. The first radioactive ion beam for the project will be ^27Si (T1/2=4.16s) at 15 MeV/u and will be produced through the reaction ^27Al(p,n)^27Si with 30 MeV protons. The recently recommissioned K150 cyclotron will accelerate the proton beams to intensity as high as 20 μA in order to produce sufficient amounts of radioactive ions. Rather than using an electrostatic deflector to extract the proton beam from the cyclotron, H^- ions will be introduced into the cyclotron, accelerated to 30 MeV and then stripped to protons with a thin carbon foil at extraction. First tests show the extraction efficiency to be nearly 100% and that the technique greatly reduces interior activation of the cyclotron and problems from secondary radiation. The H^- ion source, injection scheme and results from first tests will be presented.
- Publication:
-
APS Texas Sections Fall Meeting Abstracts
- Pub Date:
- October 2010
- Bibcode:
- 2010APS..TSFFP1068O