Speaker
Description
The rectilinear 6D cooling channel is a key element of the Muon Collider baseline, enabling the large emittance reduction required before acceleration. The Muon Collider Cooling Demonstrator aims to validate, at engineering scale and in relevant conditions, the integration of a single B5-like cooling cell. This paper presents the preliminary design of the Cooling Cell, developed within the MuCol and IMCC collaborations, and based on a high-field HTS solenoid pair, a low-Z absorber, and a 3-cell 704-MHz normal-conducting RF structure.
A key point of the design effort is the introduction of the Inter-Cell Cryostat, a compact architecture that closes the magnetic forces inside the cold mass while decoupling the RF and absorber assemblies at room temperature. This solution enables a feasible mechanical integration, compliant with lattice length constraints, and provides sufficient space for waveguides and diagnostics. However, it requires a remote-handling connection between each cell. The final cell layout incorporates the MAG2.4 HTS solenoids operating at 20 K, an updated RF cavity with thin Al foils, a LiH absorber module, cryogenic and thermal-shield structures, and pillow-seal vacuum interfaces designed for remote-handling assembly.
The configuration that we present is a step toward demonstrating the feasibility of the cooling channel of the Muon Collider.
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