The asymmetric hybrid wiggler at Orsay

Author

Barthes, Muriel ; Dael, Antoine ; Elleaume, Pascal ; Evesque, Corinne ; Goulon, Jose ; Krill, Gerard ; Laffon, C. ; Leclerc, Louis ; Michaut, Jean ; Raoux, Denis

Author_Institution

LURE LP CNRS, CEA, MEN, Univ. de Paris-Sud, Orsay, France

Volume

28

Issue

1

fYear

1992

fDate

1/1/1992 12:00:00 AM

Firstpage

601

Lastpage

604

Abstract

A special multipole hybrid wiggler optimized to produce an intense flux of circularly polarized photons was designed and successfully tested at Orsay. The wiggler was installed on the Synchrotron Radiation Source Super-ACO (E=0.8 GeV) in March 1990. A high flux is produced in a broad energy range extending from the infrared domain to the X-ray region (4 keV). The asymmetric magnetic induction is obtained by inserting drift spaces between the periods. The structure consists of 12 magnetic periods (λ=263 mm) made of neodymium iron boron permanent magnet blocks and of 2 families of iron poles (main pole and lateral poles). In each drift space small shimming SmCo₅ permanent magnets are introduced to cancel the residual field integral. The peak field achieved in a 34 mm gap is 1.05 T. The design, the construction, the magnetic measurements, and some characteristics of the light source are described

Keywords

X-ray production; light sources; permanent magnets; synchrotron radiation; wigglers; 1.05 T; 4 keV; NdFeB permanent magnet blocks; Orsay; Synchrotron Radiation Source Super-ACO; X-ray region; asymmetric hybrid wiggler; asymmetric magnetic induction; circularly polarized photons; construction; design; infrared domain; intense flux; light source; multipole hybrid wiggler; shimming SmCo₅ permanent magnets; Design optimization; Iron; Magnetic domains; Magnetic flux; Permanent magnets; Polarization; Region 4; Synchrotron radiation; Testing; Undulators;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.119948

Filename

119948