The Beam Line VI REC-Steel Hybrid Wiggler for SSRL

Author

Hoyer, E. ; Chan, T. ; Chin, J.W.G. ; Halbach, K. ; Kim, K.-J. ; Winick, H. ; Yang, J.

Author_Institution

Lawrence Berkeley Laboratory University of California Berkeley, California 94720

Volume

30

Issue

4

fYear

1983

Firstpage

3118

Lastpage

3120

Abstract

A wiggler magnet with 27 periods, each 7 cm long which reaches 1.21 T at a 1.2 cm gap and 1.64 T at 0.8 cm gap has been designed and is in fabrication. Installation in SPEAR is scheduled for mid 1983. This new wiggler will be the radiation source for a new high intensity synchrotron radiation beam line at SSRL. The magnet utilizes rare-earth cobalt (REC) material and steel in a hybrid configuration to achieve simultaneously a high magnetic field with a short period. The magnet is external to a thin walled variable gap stainless steel vacuum chamber which is opened to provide beam aperture of 1.8 cm gap at injection and then closed to a smaller aperture (< 1.0 cm). Five independent drive systems are provided to adjust the magnet and chamber gaps and alignment. Magnetic design, construction details and magnetic measurements are presented.

Keywords

Apertures; Building materials; Cobalt; Fabrication; Magnetic fields; Magnetic materials; Steel; Structural beams; Synchrotron radiation; Undulators;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.1983.4336588

Filename

4336588