  A major focus of Nb$_3$Sn accelerator magnets is on significantly reducing or
eliminating their training. Demonstration of an approach to increase the $C_p$
of Nb$_3$Sn magnets using new materials and technologies is very important both
for particle accelerators and light sources. It would improve thermal stability
and lead to much shorter magnet training, with substantial savings in machines'
commissioning costs. Both Hypertech and Bruker-OST have attempted to introduce
high-$C_p$ elements in their wire design. This paper includes a description of
these advanced wires, the finite element model of their heat diffusion
properties as compared with the standard wires, and whenever available, a
comparison between the minimum quench energy (MQE) calculated by the model and
actual MQE measurements on wires.

Accelerator Physics