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Toward a storage ring with no shear

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Zeitschrift für Physik A Hadrons and Nuclei

Abstract

One barrier to the attainment of a crystalline ordered state for a well-cooled beam in a storage ring will be the viscous heating by the shear induced in the bending fields of the ring. Shear will transfer some of the energy of coherent motion to thermal energy and may prevent reaching the very low temperatures required for formation of the ordered state. A concept for a ring is proposed in which shear within a monoenergetic beam of finite size is substantially reduced by means of combined electrostatic and magnetic fields within the bending elements.

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Authors and Affiliations

  1. Department of Physics and IUCF, Indiana University, 47405, Bloomington, IN, USA

    R. E. Pollock

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  1. R. E. Pollock
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Dedicated to Prof. Dr. P. Kienle on the occasion of his 60th birthday

This work was carried out while the author was a guest of GSI, Darmstadt, MPI für Kernphysik, Heidelberg, and IKP KFA Jülich, with partial support by a U.S. Senior Scientist Award of the Alexander von Humboldt-Stiftung. Helpful discussions with J. Schiffer, F. Mills, E. Jaeschke, D. Krämer, B. Franzke and I. Hofmann are gratefully acknowledged. I wish especially to thank Prof. P.Kienle for his stimulation, encouragement, warmth and friendship over many years.

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Pollock, R.E. Toward a storage ring with no shear. Z. Physik A - Hadrons and Nuclei 341, 95–99 (1991). https://doi.org/10.1007/BF01281279

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  • DOI: https://doi.org/10.1007/BF01281279

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