Influence of cable eddy currents on magnetic field harmonics
Conference
·
OSTI ID:7201084
- Superconducting Super Collider Lab., Dallas, TX (United States) National Lab. for High Energy Physics, Tsukuba, Ibaraki (Japan)
- Superconducting Super Collider Lab., Dallas, TX (United States)
Several SSC 5-cm-aperture, 15-m-long dipole magnet prototypes exhibit anomalous behavior of their magnetic field harmonics during current ramps at 4 A/s. The anomalies cease when the ramp is stopped and the current is held constant. The magnets also exhibit a dramatic degradation of their quench current as a function of ramp rate, as well as large AC-losses. After reviewing the AC-performance of the anomalous magnets, we develop a model of cable eddy currents, which can simulate the observed field behavior and the measured AC-losses, and which is consistent with the quench start localization of the high ramp-rate quenches.
- Research Organization:
- Superconducting Super Collider Lab., Dallas, TX (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC35-89ER40486
- OSTI ID:
- 7201084
- Report Number(s):
- SSCL-Preprint-134-Rev.A; CONF-9206281-1-Rev.A; ON: DE92040549
- Resource Relation:
- Conference: ICFA workshop on AC superconductivity, Tsukuba (Japan), 23-25 Jun 1992
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
43 PARTICLE ACCELERATORS
HARMONICS
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SUPERCONDUCTING CABLES
EDDY CURRENT TESTING
EDDY CURRENTS
SUPERCONDUCTING MAGNETS
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CONDUCTOR DEVICES
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ELECTRIC CURRENTS
ELECTRICAL EQUIPMENT
ELECTROMAGNETIC TESTING
ELECTROMAGNETS
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MATERIALS TESTING
NONDESTRUCTIVE TESTING
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430303* - Particle Accelerators- Experimental Facilities & Equipment
430200 - Particle Accelerators- Beam Dynamics
Field Calculations
& Ion Optics
HARMONICS
MAGNETIC FIELDS
SUPERCONDUCTING CABLES
EDDY CURRENT TESTING
EDDY CURRENTS
SUPERCONDUCTING MAGNETS
SUPERCONDUCTING SUPER COLLIDER
CABLES
CONDUCTOR DEVICES
CURRENTS
ELECTRIC CABLES
ELECTRIC CURRENTS
ELECTRICAL EQUIPMENT
ELECTROMAGNETIC TESTING
ELECTROMAGNETS
EQUIPMENT
MAGNETS
MATERIALS TESTING
NONDESTRUCTIVE TESTING
OSCILLATIONS
STORAGE RINGS
SUPERCONDUCTING DEVICES
TESTING
430303* - Particle Accelerators- Experimental Facilities & Equipment
430200 - Particle Accelerators- Beam Dynamics
Field Calculations
& Ion Optics