Wigglers at the Advanced Light Source

Conference · Sat Apr 01 00:00:00 EST 1995

OSTI ID:132771

Hoyer, E; Akre, J; Humphries, D ^[1]

---

1. Lawrence Berkeley Lab., CA (United States). Accelerator and Fusion Research Div.; and others

Two 3.4 m long wigglers are being designed and constructed at Lawrence Berkeley Laboratory`s (LBL) Advanced Light Source (ALS). A 19 period planar wiggler with 16.0 cm period length is designed to provide photons up to 12.4 keV for protein crystallography. This device features a hybrid permanent magnet structure with tapered poles and designed to achieve 2.0 T at a 1.4 cm magnetic gap. An elliptical wiggler is being designed to provide circularly polarized photons in the energy range of 50 eV to 10 keV for magnetic circular dichroism spectroscopy. This device features vertical and horizontal magnetic structures of 14 and 14 {1/2} periods respectively of 20 cm period length. The vertical magnetic structure is a 2.0 T hybrid permanent magnet configuration. The horizontal structure is an iron core electromagnetic design, shifted longitudinally {1/4} period with respect to the vertical magnetic structure. A maximum horizontal peak field of 0.1 T at an oscillating frequency up to 1 Hz will be achieved by excitation of the horizontal poles with a trapezoidal current waveform.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 132771
• Report Number(s): LBL-37106; CONF-950512-344; ON: DE96002442; TRN: 96:000213
• Resource Relation: Conference: 16. Institute of Electrical and Electronic Engineers (IEEE) particle accelerator conference, Dallas, TX (United States), 1-5 May 1995; Other Information: PBD: Apr 1995
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ADVANCED LIGHT SOURCE
WIGGLER MAGNETS
DESIGN
ACCELERATOR FACILITIES
X RADIATION
USES
MAGNETIC FIELDS