Analysis of Eddy Current Distributions in the CMS Magnet Yoke During the Solenoid Discharge

Details Analysis of Eddy Current Distributions in the CMS Magnet Yoke During the Solenoid Discharge Analysis of Eddy Current Distributions in the CMS Magnet Yoke During the Solenoid Discharge

2011-09-30

arxiv.org/abs/1109.6897v1

IEEE Trans. Nucl. Sci., v. 52, no. 3, pp. 741-744, June 2005

Physics

Instrumentation and Detectors

4 pages, 5 figures, 8 references

Scientific paper

10.1109/TNS.2005.850932

Flux loops have been installed on selected segments of the magnetic flux return yoke of the 4 T superconducting coil of the Compact Muon Solenoid (CMS) detector under construction at CERN. Voltages induced in the loops during discharge of the solenoid will be sampled online during the entire discharge and integrated offline to provide a measurement of the initial magnetic flux density in steel at the maximum field to an accuracy of a few percent. Although the discharge of the solenoid is rather slow (190 s time constant), the influence of eddy currents induced in the yoke elements should be estimated. The calculation of eddy currents is performed with Vector Fields' program ELEKTRA. The results of the calculations are reported.

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