Speaker
Description
Muon colliders are next-generation accelerators proposed for the future of particle physics, but their development faces limitations throughout the system, with new innovations required to achieve the desired performance. The focus here is on the target system which needs to withstand multi-MW pulsed proton beams to produce muons through pion decay. The target system must have long-term reliability while providing the required particle yield, with performance depending on its capability to sustain high thermal and radiation loads.
Several target concepts have been proposed, including graphite, liquid-metal jets, and a tungsten powder jet. The tungsten-powder option is desirable for a 2–4 MW scenario, as it combines tungsten's high density and melting point, allowing it to survive in the intense beam environment. The granular nature provides improved thermal dissipation, reduced cavitation, and enables self-replenishing behaviour. We present the optimised pion-to-muon production yields and investigate radiation-induced heat loads for the tungsten powder target system using FLUKA, Geant4 and BDSIM, to determine the optimal target design for use within the collider.
Funding Agency
STFC Rutherford/Horizon Europe
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