Author: Popp, U.
Paper Title Page
MOPEA013 Radioactive Beam Accumulation for a Storage Ring Experiment with an Internal Target 91
  • F. Nolden, C. Dimopoulou, R. Grisenti, C.M. Kleffner, S.A. Litvinov, W. Maier, C. Peschke, P. Petri, U. Popp, M. Steck, H. Weick, D.F.A. Winters, T. Ziglasch
    GSI, Darmstadt, Germany
  A radioactive 56Ni beam was successfully accumulated for an experiment with an internal hydrogen target at the storage ring ESR of GSI, Germany. The radioactive beam was produced and separated at the GSI fragment separator from a stable 58Ni beam. About 6·104 56Ni ions were injected into the ESR on a high relative momentum orbit. The beam was subjected to stochastic cooling, bunched and transported to a low relative momentum orbit where it was neither disturbed by the field of the partial aperture injection kicker nor by the fields of the stochastic cooling kickers. Slightly below this deposition momentum, the beam was accumulated and continuously cooled by means of electron cooling. For each experiment with internal hydrogen target, about 80 shots were injected consecutively, leading to a stored beam of roughly 5·106 particles.