A continuum model for current distribution in Rutherford cables

An analysis of eddy currents induced in flat Rutherford-type fables by exte rnal time dependent magnetic fields has been performed. The induced current s generate in turn a secondary magnetic field which has a longitudinal peri odicity (periodic pattern), The dependence of the amplitude of the pattern on the history of the cable excitation has been investigated, The study has been carried on with two different models for tile simulation of current d istribution in Rutherford cables, namely a network model, based on a lumped parameters circuit, and a "continuum" model, based on a distributed parame ters circuit. We show the results of simulations of tile current distributi on in tile inner cable of a short LHC dipole model in different powering co nditions and compare them to experimental data.