skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Combined Laser and Electron Cooling of Bunched C3+ Ion Beams at the Storage Ring ESR

Abstract

We report on first laser cooling studies of bunched beams of triply charged carbon ions stored at an energy of 1.46 GeV at the ESR (GSI). Despite for the high beam energy and charge state laser cooling provided a reduction of the momentum spread of one order of magnitude in space-charge dominated bunches as compared to electron cooling. For ion currents exceeding 10 {mu}A intra-beam-scattering losses could not be compensated by the narrow band laser system presently in use. Yet, no unexpected problems occurred encouraging the envisaged extension of the laser cooling to highly relativistic beams. At ESR, especially the combination with modest electron cooling provided three-dimensionally cold beams in the plasma parameter range of unity, where ordering effects can be expected and a still unexplained signal reduction of the Schottky signal is observed.

Authors:
; ;  [1]; ; ; ; ;  [2]; ;  [3];  [4]
  1. Department fuer Physik, LMU Muenchen, 85748 Garching (Germany)
  2. Gesellschaft fuer Schwerionenforschung (GSI), Darmstadt (Germany)
  3. Max-Planck-Institut fuer Kernphysik, Heidelberg (Germany)
  4. Institut fuer Physik, Universitaet Mainz, Mainz (Germany)
Publication Date:
OSTI Identifier:
20798447
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 821; Journal Issue: 1; Conference: COOL05: International workshop on beam cooling and related topics, Galena, IL (United States), 18-23 Sep 2005; Other Information: DOI: 10.1063/1.2190157; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; BEAM BUNCHING; BEAM CURRENTS; CARBON IONS; CATIONS; CHARGE STATES; ELECTRON BEAMS; ELECTRON COOLING; ESR STORAGE RING; GEV RANGE; ION BEAMS; LASERS; PARTICLE LOSSES; RELATIVISTIC RANGE; SCATTERING; SIGNALS; SPACE CHARGE

Citation Formats

Schramm, U., Bussmann, M., Habs, D., Kuehl, T., Beller, P., Franzke, B., Nolden, F., Steck, M., Saathoff, G., Reinhardt, S., and Karpuk, S.. Combined Laser and Electron Cooling of Bunched C3+ Ion Beams at the Storage Ring ESR. United States: N. p., 2006. Web. doi:10.1063/1.2190157.
Schramm, U., Bussmann, M., Habs, D., Kuehl, T., Beller, P., Franzke, B., Nolden, F., Steck, M., Saathoff, G., Reinhardt, S., & Karpuk, S.. Combined Laser and Electron Cooling of Bunched C3+ Ion Beams at the Storage Ring ESR. United States. doi:10.1063/1.2190157.
Schramm, U., Bussmann, M., Habs, D., Kuehl, T., Beller, P., Franzke, B., Nolden, F., Steck, M., Saathoff, G., Reinhardt, S., and Karpuk, S.. Mon . "Combined Laser and Electron Cooling of Bunched C3+ Ion Beams at the Storage Ring ESR". United States. doi:10.1063/1.2190157.
@article{osti_20798447,
title = {Combined Laser and Electron Cooling of Bunched C3+ Ion Beams at the Storage Ring ESR},
author = {Schramm, U. and Bussmann, M. and Habs, D. and Kuehl, T. and Beller, P. and Franzke, B. and Nolden, F. and Steck, M. and Saathoff, G. and Reinhardt, S. and Karpuk, S.},
abstractNote = {We report on first laser cooling studies of bunched beams of triply charged carbon ions stored at an energy of 1.46 GeV at the ESR (GSI). Despite for the high beam energy and charge state laser cooling provided a reduction of the momentum spread of one order of magnitude in space-charge dominated bunches as compared to electron cooling. For ion currents exceeding 10 {mu}A intra-beam-scattering losses could not be compensated by the narrow band laser system presently in use. Yet, no unexpected problems occurred encouraging the envisaged extension of the laser cooling to highly relativistic beams. At ESR, especially the combination with modest electron cooling provided three-dimensionally cold beams in the plasma parameter range of unity, where ordering effects can be expected and a still unexplained signal reduction of the Schottky signal is observed.},
doi = {10.1063/1.2190157},
journal = {AIP Conference Proceedings},
number = 1,
volume = 821,
place = {United States},
year = {Mon Mar 20 00:00:00 EST 2006},
month = {Mon Mar 20 00:00:00 EST 2006}
}