Development of a NdFe-Steel Hybrid Wiggler for SSRL (Stanford Synchrotron Radiation Laboratory),
Abstract
A NdFe-steel hybrid configured permanent magnet wiggler is being developed for insertion in the SPEAR ring. Featuring 15 complete periods, a 12.9-cm magnetic period length, and a peak magnetic field range of 0.01-1.4 Tesla, the wiggler was designed to provide an intense radiation source on Beam Line VIII-W. A new permanent magnet material, neodymium iron (NdFe), is being used in the magnetic structure instead of rare earth cobalt, REC, used previously in the 27-period wiggler now on Beam Line VI. NdFe advantages include a 16% higher coercive force 10.6-kOe vs. 9.0-kOe) and lower cost. The wiggler design features a thin walled, rigid vacuum chamber with pole pockets on opposing surfaces allowing a 2.1-cm minimum magnetic gap with a 1.8-cm beam vertical aperture. At 3 GeV the wiggler at peak field is expected to radiate approximately two kilowatts in a 5 mrad horizontal fan with a 7.8 keV critical energy. Calculations are in progress to model the wiggler radiation spatial and spectral radiation emission.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1985
- Accession Number
- ADP005093
Entities
People
- Edward M. Lent
- K. G. Tirsell
- Paul J. Ebert
- Thomas C. Brown
- William C. Dickinson
Organizations
- Lawrence Livermore National Laboratory