B. Faatz et al., STUDY OF THE UNDULATOR SPECIFICATION FOR THE VUV-FEL AT THE TESLA TEST FACILITY, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 393(1-3), 1997, pp. 380-384
In this paper, the influence of undulator errors, more specific magnet
ic held errors, on the Free-Electron Laser performance is investigated
. Both the influence of variation in undulator peak field and of dipol
e fields resulting from misaligned quadrupoles, is considered. For the
se quantities, upper limits are given, and the influence of additional
correction stations on the reduction in performance is studied.