Dynamic field effects in main LHC dipoles. During ramps, boundary-induced coupling currents (BICCs) are induced in the LHC cable creating a field ripple with period twist pitch length
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Parametric study carried out on 1 m long model magnet shows no clear evidence of the dependence of absolute harmonic effects vs Iinj
Absolute B3 decay: reduction of 15% from 0.45 TeV to 1 TeV injection(influence of longer ramp to injection not taken into account)
Normalized B3 decay: reduction of a factor 2.6 from 0.45 TeV to 1 TeV injection