Design of a superconducting multipole wiggler for synchrotron radiation

Author

Hwang, C.S. ; Wang, B. ; Chen, J.Y. ; Wahrer, R. ; Chang, C.H. ; Fan, T.C. ; Lin, F.Y. ; Chen, H.H. ; Huang, M.H. ; Chen, C.T.

Author_Institution

Synchrotron Radiat. Res. Center, Hsinchu, Taiwan

Volume

13

Issue

2

fYear

2003

fDate

6/1/2003 12:00:00 AM

Firstpage

1209

Lastpage

1212

Abstract

A 32-pole superconducting magnet with a 12 × 80 mm² cold bore aperture was designed to serve as a multipole wiggler in the Taiwan synchrotron light source. The magnet consists of 32 pairs of racetrack NbTi superconducting coils with a periodic length of 60 mm, and can produce a maximum magnetic field of 3.2 Tesla at a pole gap of 18 mm. The superconducting coils, the aluminum-supporting block, and the return iron yokes are cooled to 4.4 K in LHe bath. The temperature of cold bore beam duct will be at 70 K using liquid nitrogen. Technical issues concerning the design of the magnet and its construction are discussed. A prototype magnet with five poles was also constructed to characterize the magnet design by means of various methods of magnetic field measurement.

Keywords

cryogenics; niobium alloys; superconducting coils; superconducting magnets; synchrotron radiation; titanium alloys; type II superconductors; wigglers; 18 mm; 3.2 T; 32-pole superconducting magnet; 4.4 K; 60 mm; 70 K; Al supporting block; He; NbTi; Taiwan synchrotron light source; liquid He bath; liquid nitrogen cooling; persistent current switch; quench protection; racetrack NbTi superconducting coils; return iron yokes; superconducting multipole wiggler design; synchrotron radiation; Apertures; Boring; Light sources; Magnetic fields; Niobium compounds; Superconducting coils; Superconducting magnets; Synchrotron radiation; Titanium compounds; Undulators;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2003.812634

Filename

1211815