Development of a NdFe-steel hybrid wiggler for SSRL
A NdFe-steel hybrid configured permanent magnet wiggler, is being developed for insertion in the SPEAR ring at the Stanford Synchrotron Radiation Laboratory, SSRL. Featuring 15 complete periods, a 12.9-cm magnetic period length, and a peak magnetic field range of 0.01 to 1.4 Tesla, the wiggler, was designed to provide an intense radiation source for the National Laboratory/University of California participating research team (PRT) facility on Beam Line VIII-W. A new permenent 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.
- Research Organization:
- Lawrence Livermore National Lab., CA (USA); Lawrence Berkeley Lab., CA (USA); Stanford Univ., CA (USA). Stanford Synchrotron Radiation Lab.
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 6436257
- Report Number(s):
- UCRL-92829; CONF-8510186-1; ON: DE86002141
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
430303* -- Particle Accelerators-- Experimental Facilities & Equipment
ALLOYS
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
EQUIPMENT
IRON ALLOYS
IRON BASE ALLOYS
MAGNETS
NEODYMIUM ALLOYS
RADIATION SOURCES
RARE EARTH ALLOYS
SPEAR
STEELS
STORAGE RINGS
SYNCHROTRON RADIATION SOURCES
WIGGLER MAGNETS