  Training of accelerator magnets is a costly and time consuming process. The
number of training quenches must therefore be reduced to a minimum. We
investigate training of impregnated Nb3Sn Rutherford cable in a small-scale
experiment. The test involves a Rutherford cable impregnated in a meandering
channel simulating the environment of a canted-cosine-theta (CCT) coil. The
sample is powered using a transformer and the Lorentz force is generated by an
externally applied magnetic field. The low material and helium consumption
enable the test of a larger number of samples. In this article, we present
training of samples impregnated with alumina-filled epoxy resins, a modified
resin with paraffin-like mechanical properties, and a new tough resin in
development at ETH Z\"urich. These new data are compared with previous results
published earlier. Compared to samples with unfilled epoxy resin, those with
alumina-filled epoxy show favorable training properties with higher initial
quench currents and fewer training quenches before reaching 80% of the critical
current.

Accelerator Physics