Magnetic measurements at Lawrence Berkeley Laboratory

• Published in: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) Vol. 28; no. 1; pp. 797 - 800
• Main Authors: Green, M.I., Barale, P., Callapp, L., Case-Fortier, M., Lerner, D., Nelson, D., Schermer, R., Skipper, G., Van Dyke, D., Cork, C., Halbach, K., Hassenzahl, W., Hoyer, E., Marks, S., Harten, T., Luchini, K., Milburn, J., Tanabe, J., Zucca, F., Keller, R., Selph, F., Gilbert, W., Green, M.A., O'Neil, J., Schafer, R., Taylor, C., Greiman, W., Hall, D., MacFarlane, J.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: United States IEEE 01.01.1992
• Subjects: 430200 - Particle Accelerators- Beam Dynamics, Field Calculations, & Ion Optics; 430400 - Particle Accelerators- Storage Rings; 665411 - Basic Superconductivity Studies- (1992-); 665412 - Superconducting Devices- (1992-); ACCELERATOR FACILITIES; Coils; CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DATA ACQUISITION SYSTEMS; DIPOLES; ELECTRIC CONDUCTIVITY; ELECTRICAL EQUIPMENT; ELECTRICAL PROPERTIES; Electromagnetic measurements; ELECTROMAGNETS; HALL EFFECT; Laboratories; LAWRENCE BERKELEY LABORATORY; LIGHT SOURCES; Magnetic devices; MAGNETIC DIPOLES; MAGNETIC FLUX; Magnetic moments; MAGNETIC PROPERTIES; Magnetic separation; Magnetic variables measurement; MAGNETOMETERS; MAGNETS; MEASURING INSTRUMENTS; MULTIPOLES; NATIONAL ORGANIZATIONS; PARTICLE ACCELERATORS; PERMANENT MAGNETS; PHYSICAL PROPERTIES; QUADRUPOLES; RADIATION SOURCES; RESEARCH PROGRAMS; STORAGE RINGS; SUPERCONDUCTING COILS; SUPERCONDUCTING DEVICES; SUPERCONDUCTING MAGNETS; SUPERCONDUCTING SUPER COLLIDER; SUPERCONDUCTIVITY; TECHNOLOGY UTILIZATION; Undulators; US AEC; US DOE; US ERDA; US ORGANIZATIONS; WIGGLER MAGNETS
• ISSN: 0018-9464; 1941-0069
• DOI: 10.1109/20.119998

Recent magnetic measurement activities at LBL have been concentrated in two separate areas, electromagnets and permanent magnets for the Advanced Light Source (ALS), and superconducting magnets for the Superconducting Super Collider Laboratory (SSCL). A survey of the many different measurement systems is presented. These include AC magnetic measurements of an ALS booster dipole engineering model magnet, dipole moment measurements of permanent magnet blocks for ALS wigglers and undulators, permeability measurements of samples destined for wiggler and undulator poles, harmonic error analysis of SSC one-meter model dipoles and quadrupoles and five-meter long SSC prototype quadrupoles, harmonic error analysis of ALS dipoles, quadrupoles, and sextupoles, precision Hall probe mapping of ALS storage ring combined function magnets, and the design of the ALS insertion device magnetic mapping system. A Unix-based data acquisition system that is being developed for the SSC is also described. Probes used for magnetic measurements include Helmholtz coils, integral coils, point coils, bucking harmonic analysis coils, several different types of Hall probes, and nuclear magnetic resonance magnetometers.< >