A FLEXIBLE PLANAR HELICAL UNDULATOR DESIGN FOR SYNCHROTRON SOURCES

This paper presents a new design for a helical permanent magnet undulator. it can be easily implemented on a synchrotron source without engineering difficulty. The effect on the electron beam is discussed and found to be acceptable. Flux and brilliance is similar to those from conventional planar undulator. Heat load can be considerably reduced which makes it a very attractive device for the new generation of 6-8 GeV light sources. On the ESRF, very brilliant helical radiation is expected in the 0.5-10 keV photon energy range. © 1990 IOP Publishing Ltd.