A Fixed Gap APPLE II Undulator for SLS

Journal Article · Fri Jan 19 00:00:00 EST 2007 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2436084· OSTI ID:21052538

Schmidt, T; Imhof, A; Ingold, G; Jakob, B; Vollenweider, C ^[1]

---

1. Paul Scherrer Institut, Swiss Light Source, 5232 Villigen PSI (Switzerland)

To vary the polarization vector of an APPLE II undulator continuously from 0 - 180 deg., all four magnet arrays need to be movable. Following the adjustable-phase undulator approach by R. Carr, a 3.4 m long fixed gap undulator for SLS with a gap of 11.6 mm has been constructed. It will be installed in fall 2006. The gap drive is replaced by a pair-wise shift of the magnet arrays to change the energy, while the polarization is changed by shifts of diagonal arrays. The high injection efficiency and standard operation top-up mode at the SLS allows this simplified undulator design. The design as well as the operational aspects will be discussed.

• OSTI ID: 21052538
• Journal Information: AIP Conference Proceedings, Vol. 879, Issue 1; Conference: 9. international conference on synchrotron radiation instrumentation, Daegu (Korea, Republic of), 28 May - 2 Jun 2006; Other Information: DOI: 10.1063/1.2436084; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
43 PARTICLE ACCELERATORS
DESIGN
EFFICIENCY
MAGNETIC FIELDS
OPERATION
POLARIZATION
SWISS LIGHT SOURCE
SYNCHROTRON RADIATION
WIGGLER MAGNETS