Speaker
Description
Ongoing conceptual studies for a 10TeV muon collider
identified rapid cycling synchrotrons as major engineering
challenge. Due to the muon’s short lifetime of only 2.2µs
at rest, normal-conducting bending magnets with field rise
rates of well beyond 1kT/s are indispensable to support ac-
cordingly fast acceleration cycles. Energies of 100MJ will be
interchanged between magnets and capacitor banks within
few milliseconds. Accurate models of the magnets are thus
required to optimize the overall system performance. The
non-uniform temperature distribution in the magnet strongly
affects material properties like the electrical conductivity
of copper and must therefore be considered in the electro-
magnetic field problem. This contribution presents recent
advancements in addressing this multi-physical problem by
using problem-specific finite-element tools allowing to de-
scribe the inherently transient behavior. The ferromagnetic
yoke is accurately resolved by using a novel combination
of a Bergqvist hysteresis and a homogenized eddy current
model. Finally, different magnet design concepts are com-
pared in terms of material costs, magnetic energy, losses,
field quality and temperature buildup.
| What category does your poster fit in? | Acceleration |
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