Magnetic measurement system for harmonic analysis of LBL SSC model dipoles and quadrupoles
Specialized hardware and software have been developed to facilitate harmonic error analysis measurements of one-meter-long Superconducting Super Collider (SSC) model dipole and quadrupole magnets. Cold bore measurements feature cryogenic search-coil arrays with high buckling ratios that also have sufficient sensitivity to make room-temperature measurements at the low magnet currents of --10 A. Three sets of search coils allow measurements of the center, either end, and/or the axially integrated field. Signals from the search coils are digitally integrated by means of a voltage-to-frequency converter feeding an up-down counter. The data are drift corrected, Fourier analyzed, converted to physical quantities, and printed and plotted. A cycle of measurements including data acquisition, processing, and the generation of tabular and graphic output requires 80 seconds. The vast amount of data generated (several hundred cycles for each magnet) has led to the development of postprocessing programs and procedures. Spreadsheets allow easy manipulation and comparison of results within a test series and between magnets.
- Research Organization:
- Lawrence Berkeley Lab., Univ. of California, Berkeley, CA (US)
- OSTI ID:
- 6471422
- Report Number(s):
- CONF-870901-; TRN: 89-007314
- Journal Information:
- IEEE Trans. Magn.; (United States), Vol. 24:2; Conference: 10. international conference on magnet technology (MT-10), Boston, MA, USA, 21 Sep 1987
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
SUPERCONDUCTING MAGNETS
FOURIER TRANSFORMATION
SUPERCONDUCTING SUPER COLLIDER
COMPUTER ARCHITECTURE
COMPUTER CODES
DATA COVARIANCES
DIPOLES
MEASURING METHODS
QUADRUPOLES
SUPERCONDUCTING COILS
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
EQUIPMENT
INTEGRAL TRANSFORMATIONS
MAGNETS
MULTIPOLES
STORAGE RINGS
SUPERCONDUCTING DEVICES
TRANSFORMATIONS
430303* - Particle Accelerators- Experimental Facilities & Equipment
420201 - Engineering- Cryogenic Equipment & Devices