Summary
A new type of plasma lens using a «wall-stabilized» discharge has been investigated concerning its potential to fine-focus heavy-ion beams. The lens was tested in several runs at the GSI linear accelerator UNILAC with a beam energy of 2.2 GeV and a magnetic rigidity of 1.6 Tm. A remarkably high accuracy and reproducibility of the focusing was found. With a peak current of 22 kA a beam of 1 cm initial diameter was focused down to a spot diameter of below 300 μm at a distance of 90 mm behind the lens, in agreement with analytical calculations and Monte Carlo simulations of the focusing process. The focal spot size was mainly limited by the beam emittance and no lens-related aberrations could be detected. Plasma lenses are under consideration for use at the SIS/ESR facility of GSI to produce small beam spots on targets in order to achieve high energy density in matter. A design for a plasma lens focusing the beam from the SIS-synchrotron with a typical rigidity of 6 T m is proposed.
Similar content being viewed by others
References
J. Meyer-ten-Vehn, S. Witkowski, R. Bock, D. H. J. Hoffmann I. Hofmann, R. W. Müller, R. Arnold andP. Mulser:Phys. Fluids B,2, 1313 (1990).
E. Boggasch, J. Jacoby, H. Wahl, K.-G. Dietrich, D. H. H. Hoffmann, W. Laux, M. Elfers, C. R. Haas, V. P. Dubenkov andA. A. Golubev:Phys. Rev. Lett.,66, 1705 (1991).
E. Boggasch, A. Tauschwitz, H. Wahl, K.-G. Dietrich, D. H. H. Hoffmann, W. Laux, M. Stetter andR. Tkotz:Appl. Phys. Lett.,60, 2475 (1992).
A. Tauschwitz, E. Boggasch, K.-G. Dietrich, D. H. H. Hoffmann, W. Laux, H. Wahl, R. Tkotz andM. Stetter:Proceedings of the European Particle Acceleration Conference, Berlin, 1992.
E. Boggasch, A. Tauschwitz, K.-G. Dietrich, D. H. H. Hoffmann, W. Laux, H. Wahl, R. Tkotz andM. Stetter:Proceedings of the European Particle Accelerator, Berlin, 1992.
M. de Magistris, D. H. H. Hoffmann, E. Boggasch andA. Tauschwitz: this issue, p. 1643.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Tauschwitz, A., Boggasch, E., Hoffmann, D.H.H. et al. The plasma lens solution for heavy-ion beam focusing. Nuov Cim A 106, 1733–1737 (1993). https://doi.org/10.1007/BF02821274
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF02821274