A long electromagnetic wiggler for the paladin free-electron laser experiments

Conference · Thu Jan 01 00:00:00 EST 1987

OSTI ID:5970005

Deis, G A; Harvey, A R; Parkison, C D; Prosnitz, D; Rego, J; Scharlemann, E T; Halbach, K

We have designed, built, and tested a 25.6-m-long wiggler for a free-electron-laser (FEL) experiment. It is a DC iron-core electromagnetic wiggler that incorporates a number of important and unique features. Permanent magnets are used to suppress saturation in the iron and extend the linear operating range. Steering-free excitation allows real-time adjustment of the field taper without causing beam steering. Wiggle-plane focusing is produced by curved pole tips. The magnitude of random pole-to-pole field errors is minimized by a mechanical design concept that reduces tolerance stackup in critical locations. To date, we have tested 15 m of this wiggler, and our measurements have shown exceptionally low levels of random errors. 8 refs.

• Research Organization: Lawrence Livermore National Lab., CA (USA); Lawrence Berkeley Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5970005
• Report Number(s): UCRL-96292; CONF-870901-8; ON: DE88000970
• Resource Relation: Conference: 10. international conference on magnet technology (MT-10), Boston, MA, USA, 21 Sep 1987; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
FREE ELECTRON LASERS
WIGGLER MAGNETS
DESIGN
PERFORMANCE
BEAM FOCUSING MAGNETS
ELECTROMAGNETS
ELECTRON BEAMS
HYSTERESIS
MAGNETIC FIELDS
PERMANENT MAGNETS
SPECIFICATIONS
TESTING
BEAMS
ELECTRICAL EQUIPMENT
EQUIPMENT
LASERS
LEPTON BEAMS
MAGNETS
PARTICLE BEAMS
430303* - Particle Accelerators- Experimental Facilities & Equipment