Recent developments of insertion devices at the ESRF

Author

Chavanne, J. ; Elleaume, P. ; Van Vaerenbergh, P.

Author_Institution

Eur. Synchrotron Radiat. Facility, Grenoble, France

Volume

3

fYear

1997

fDate

12-16 May 1997

Firstpage

3506

Abstract

After 4 years of user operation, the ESRF is operating 44 segments of Insertion Devices serving 25 beamlines. Recent developments in the technology of Insertion Devices are discussed such as the design of passive phasing sections for both the pure permanent magnet and hybrid type undulator. A novel design of a short period variable polarization helical undulator is presented. It is made of both permanent magnets and coils. It will cover the photon energy range from 1 to 15 keV with a flipping time of a few milliseconds between left and right circular polarization. Finally, some perturbations induced by ambient residual field on hybrid insertion devices are reported

Keywords

electromagnets; electron accelerators; electron spin polarisation; permanent magnets; storage rings; wigglers; ESRF; ambient residual field; circular polarization; hybrid type undulator; insertion devices; passive phasing sections; pure permanent magnet undulator; short period variable polarization helical undulator; Coils; Distributed decision making; Hybrid power systems; Intrusion detection; Permanent magnets; Polarization; Superconducting magnets; Synchrotron radiation; Undulators; X-rays;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1997. Proceedings of the 1997

Conference_Location

Vancouver, BC

Print_ISBN

0-7803-4376-X

Type

conf

DOI

10.1109/PAC.1997.753257

Filename

753257