Magnetic measurements for tuning and operating a hybrid wiggler

Conference · Thu Sep 01 04:00:00 EDT 1983

OSTI ID:5717068

Nelson, D H; Green, M I; Halbach, K; Hoyer, E H

A hybrid, vanadium-permendur/rare-earth-cobalt (REC) wiggler has been designed, built, and measured at the Lawrence Berkeley Laboratory (LBL) as a joint project with the Stanford Synchrotron Radiation Laboratory (SSRL) and the Exxon Research and Engineering Company. This paper describes two magnetic measurement techniques used to characterize and tune the wiggler. We describe Hall effect gaussmeter measurements that: (1) confirmed and quantified the wiggler sinusoidal field distributions, and (2) calibrated variable-flux-shunt adjustments, which can provide fine-tuning for individual poles. We also describe measurements of integrals of magnetic induction with integral coils and electronic integrators. Coils and integrators were used to: (1) calibrate the end-pole currents required to zero the half-magnet integrals, (2) measure the horizontal-component integral, and (3) measure variations in single period integrals as functions of longitudinal position in the wiggler.

• Research Organization: Lawrence Berkeley Lab., CA (USA)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5717068
• Report Number(s): LBL-15899; CONF-830971-5; ON: DE84001100
• Country of Publication: United States
• Language: English

Related Subjects

440300* -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
CALIBRATION
DATA ACQUISITION SYSTEMS
ELEMENTS
HALL EFFECT
INDUCTION
MAGNETIC MATERIALS
MAGNETIC PROPERTIES
MATERIALS
MEASURING METHODS
METALS
PHYSICAL PROPERTIES
TRANSITION ELEMENTS
TUNING
VANADIUM