Sprecher
Beschreibung
The efficient production and capture of muons as well as their immediate acceleration towards high particle energies are severe engineering challenges on the path towards the first 10TeV synchrotron-based muon-collider, envisioned by the European MuCol program. The required ramp rates of up to 4.5kT/s within the rapid-cycling-synchrotron can reliably be provided by normal-conducting magnets in combination with a periodically switched capacitor-based powering system.
The numerical analysis of this subsystem necessitates transient simulation schemes considering both circuit and magnet, whereby the latter is discretized as finite-element (FE) model. The calculations are especially demanding due to highly non-linear circuit elements such as switches and diodes as well as the non-linear and hysteretic behavior of the ferromagnetic laminated iron core.
This contribution presents a pragmatic modeling approach for the transient and nonlinear analysis of bending magnets powered by current pulses of few ms. An implementation within a conventional 2D/3D FE framework led to novel insights in magnet and power supply design.
