Optimization Of The Emitted Spectrum Of A Superconductive Undulator By Correction Coils And Preparation For A Storage Ring Test In ANKA

A beam test of a superconductive undulator (100 periods, 14 mm period length) is in preparation at the 2.5 GeV storage ring ANKA in Karlsruhe. The aim of this test is to study the behaviour of a cold-bore superconductive undulator in a storage ring (study of the influence of the beam induced heating and heating by synchrotron radiation from downstream magnets) and to conduct an analysis of the quality of the emitted spectrum. A coil at the entrance and a single superconductive dipole correction coil covering the whole undulator is provided to minimize the first and second integral. A section of this paper is devoted to the discussion of a more elaborate correction system for future undulators