Acceleration of H$^{-}$ ions for the Cyclotron Institute Upgrade Project

POSTER

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 $^{27}$Si (T$_{1/2}$=4.16s) at 15 MeV/u and will be produced through the reaction $^{27}$Al(p,n)$^{27}$Si with 30 MeV protons. The recently recommissioned K150 cyclotron will accelerate the proton beams to intensity as high as 20 $\mu $A in order to produce sufficient amounts of radioactive ions. Rather than using an electrostatic deflector to extract the proton beam from the cyclotron, H$^{-}$ 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.

Authors

  • Juan Olvera

    Angelo State University

  • Andrey Chabanov

    West Texas A\&M University, Rhodes College, Texas Woman's University, University of Texas at San Antonio, Texas A\&M University, Department of Physics, University of Texas at Arlington, Texas State University, Pajarito Scientific Corporation, Idaho National Laboratory, Duke University, UNC, Department of Chemistry, UTSA, Department of Physics and Astronomy, UTSA, The University of Texas at San Antonio, Harvar-Smithsonian Center for Astrophysics, University of New Mexico, Maria Mitchel Observatory, NRAO, University of Alabama, Trinity University, Department of Physics and Astronomy, University of Texas at San Antonio, San Antonio, Texas 78249, V. Alecsandri College, Bacau, Romania, University of Texas at Dallas, Argonne National Laboratory, Western Michigan University, Institute of Physics, UNAM, Mexico, University of North Texas - Chemistry, University of St. Thomas, SwRI San Antonio, Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Department of Electrical and Computer Engineering, University of Texas at Arlington, Department of Physics, University of Texas at Brownsville, SciPrint.org, The University of Texas at Austin, Georgia Tech, MIT, University of Tennessee, University of Michigan, ORNL, Texas A&M University-Commerce, University of Texas San Antonio, University of Texas at Brownsville, University of Dallas, Sternberg Astronomical Institute, SwRI, CU-Boulder, SwRI/UTSA, Southwest Research Institute, JILA, University of Colorado, Department of Physics, Texas A\&M University, Stephen F. Austin State University, Angelo State University, St. Mary's University, Physics Department, University of South Florida, CINVESTAV, Queretaro, Mexico, Department of Physics, UCSD, LANSCE, Los Alamos National Laboratory, Department of Physics and Astronomy, Texas A\&M University, Texas A\&M University: Department of Physics, Texas Christian University, Fort Worth, TX, Paschal High School, Fort Worth, TX, Tarleton State University, Stephenville, TX, Paine College, Augusta, GA, University of Houston, University of Texas at Arlington, IREAP, Department of Physics, University of Maryland, Air Force Research Laboratory, Institute for Quantum Studies and Department of Physics, Texas A\&M Universtity, College Station, Texas 77843, USA, Max-Planck Institut for Kernphysik, Saupfercheckweg 1,D-69117 Heidelberg, Germany, The National Center for Mathematics and Physics, P.O. Box 6086, KACST, Riyadh 11442, Saudi Arabia