Pages: 36 - 39

Authors: Dragan TOPREK, Iwo FORMANOY, and Sytze BRANDENBURG

Abstract

At Kernfysisch Versneller Institute, optical properties of injection transport beam were studied. Measurements of beam size and emittance determined by "varying quadrupole method" are compared with calculations including fringe fields up to the third order with the COSY INFINITY code. Calculations and measurements qualitatively match; the calculations reflect the observed large beam losses. On the basis of the calculations new settings have been determined, resulting in a significant increase of the transmission. To achieve full transmission a complete redesign of the beam line is needed, in particular of the bending magnets.

Key words: beam, transmission, fringe field, emittance, quadrupole

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