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Eddy Current Summary

Eddy Current Summary. Work done by Oxford/RAL Group Contributors Holger Witte Jim Rochford. 2D axis symmetric eddy current model of absorber cryostat. Eddy Currents. Computation of eddy currents in focus absorber system under coil quench conditions

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Eddy Current Summary

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  1. Eddy Current Summary Work done by Oxford/RAL Group Contributors Holger Witte Jim Rochford Elwyn Baynham RAL

  2. 2D axis symmetric eddy current model of absorber cryostat Elwyn Baynham RAL

  3. Eddy Currents • Computation of eddy currents in focus absorber system under coil quench conditions • Max di/dt related to a run down in approx 3 secs • either linear run down or quench di/dt profile • Studied • Power dissipation in coil and absorber components • Forces in components – in particular windows • Cases • Flip • Solenoid – simple reversal • Flip with offset absorber Elwyn Baynham RAL

  4. Eddy Currents Elwyn Baynham RAL

  5. Eddy Currents Elwyn Baynham RAL

  6. Eddy Currents • Conclusions • No significant eddy current problems for design – power or forces • Further work • Solenoid mode repeat modelling • Some discrepancies in 2d modelling • Issue report Elwyn Baynham RAL

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