Commissioning of the St. George Recoil Separator

ORAL

Abstract

Measurement of alpha­capture reactions at energies of astrophysical interest is hindered by low cross sections and relatively high gamma­backgrounds. The precision of these measurements, using traditional techniques, is limited by the ability to reduce this gamma­background. Using a recoil separator enables the direct detection of the heavy reaction products. These recoils are separated from the primary beam using a Wien­filter and a series of magnetic dipoles, and then identified using a total energy loss plus time- of­flight detection system. A series of commissioning experiments to measure the energy acceptance of the St. George recoil separator are currently underway at Notre Dame. The progress of these measurements will presented, along with plans for upcoming angular acceptance measurements.

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Authors

  • Matt Bowers

    University of Notre Dame, University of Bari, Gran Sasso Science Institute, JINA and UND, UTK, LLNL, OU, INFN, TAMU, Universidad Complutense, Madrid, Lawrence Livermore National Laboratory, Division of Nuclear Physics, National Centre for Nuclear Research, Warsaw, Notre Dame University, University of Michigan, Michigan State University, Univ of Notre Dame, Weizmann Institute, Univ of Birmingham, Univ of Michigan, Oak Ridge National Laboratory, Argonne National Laboratory, The Hebrew University Jerusalem, Indiana University Purdue University Fort Wayne, Professor, University of Notre Dame, Assistant Professor, University of Notre Dame, PhD student, Associate Professor, University of Notre Dame, University of Richmond, University of Surrey, University of Richmond, University of Oslo, University of Wisconsin-La Crosse, University of Notre Dame, Department of Civil Engineering, University of Notre Dame, Department of Applied Computational Mathematics and Statistics, IUPUI Department of Physics, Indianapolis, IN, Ohio Northern University, Northern Kentucky University, Physics Department, Unversity of Missouri, Physics Department, REU Summer Intern, Sichuan University, Purdue University, Princeton University, Monmouth College, ETH, Switzerland, EPFL, Switzerland, Institut Laue-Langevin, France, Kent State University, University of Tennessee, Indiana University South Bend, University Of Notre Dame