Results of Stretched Wire Field Integral Measurements on the Mini-UndulatorMagnet. Comparison of Results Obtained from Circular and Translational Motion of the Integrating Wire

摘要

Measurements of the multipole content of the Mini-Undulator magnet have been madewith two different integrating wire techniques. Both measurement used 43 strand Litz wire stretched along the length of the magnet within the magnet gap. In the first technique, the wire motion was purely translational, while in the second technique the wire was moved along a circular path. The induced voltage in the Litz wire was input into a Walker integrator, and the integrator output was analyzed as a function of wire position for determination of the multipole content of the magnetic field.