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Dr. Theopolis
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Flux-Loop Measurement of Magnetic Flux Density in the CMS Magnet Yoke
The CMS detector's superconducting solenoid magnetizes a 10,000-ton steel flux-return yoke. Flux loops wound around yoke cross-sections register induced voltages during magnet ramps and fast discharges; integrating these voltages over time yields the magnetic flux density in the steel. This concept covers isolating the eddy-current contribution during fast discharges so the flux-loop data can validate the 3D computer model of the magnet with higher precision.