New wiggler beam line for SSRL

Conference · Sun Aug 01 04:00:00 EDT 1982

OSTI ID:6155747

Hoyer, E

A new high-intensity-beam line with a wiggler magnet source is described. This project, in final stages of design, is a joint effort between Lawrence Berkeley Laboratory (LBL), the Exxon Research and Engineering Company (EXXON), and the Stanford Synchrotron Radiation Laboratory (SSRL). Installation at SSRL will begin in the summer of 1982. The goal of this project is to provide extremely high-brightness synchrotron radiation beams over a broad spectral range from 50 eV to 40 keV. The radiation source is a 27 period (i.e., 55 pole) permanent magnet wiggler of a new design. The wiggler utilizes rare-earth cobalt (REC) material in the steel hybrid configuration to achieve high magnetic fields with short periods. An analysis has been made of the polarization, angular distribution and power density of the radiation produced by the wiggler. Details of the wiggler design are presented. The magnet is outside a thin walled (1mm) variable gap stainless steel vacuum chamber. The chamber gap will be opened to 1.8 cm for beam injection into SPEAR and then closed to 1.0 cm (or less) for operation. Five remotely controlled drives are provided; to change the wiggler gap, to change the vacuum chamber aperture and to position the wiggler. Details of the beam line optics and end stations are presented. Thermal loading on beam line components is severe. The peak power density at 7.5 m is 5 kW/cm/sup 2/ for the nominal wiggler field and present SPEAR beam currents and will approach 20 kW/cm/sup 2/ with the maximum wiggler field and projected SPEAR beam currents.

• Research Organization: Lawrence Berkeley Lab., CA (USA)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6155747
• Report Number(s): LBL-14773; CONF-820839-8; ON: DE83012914
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430303 -- Particle Accelerators-- Experimental Facilities & Equipment
430400* -- Particle Accelerators-- Storage Rings
BEAM OPTICS
BREMSSTRAHLUNG
ELECTRICAL EQUIPMENT
ELECTROMAGNETIC RADIATION
ELECTROMAGNETS
EQUIPMENT
MAGNETIC FIELDS
MAGNETS
POLARIZATION
RADIATIONS
SPEAR
SPECIFICATIONS
STORAGE RINGS
SYNCHROTRON RADIATION
WIGGLER MAGNETS