Speaker
Description
Laser-based H⁻ charge-exchange injection offers an attractive alternative to conventional carbon-foil stripping for injection into multi-megawatt proton rings. In foil-based systems, foil heating and degradation, radioactivation, uncontrolled beam losses, and transverse emittance growth are factors limiting the achievable average beam power. In this work, we evaluate the feasibility of implementing laser-assisted H⁻ charge-exchange injection into the 5 MW ESSnuSB (European Spallation Source neutrino Super Beam) proton accumulator. The analysis is based on numerical and asymptotic solutions of the Schrödinger equation for a two-level model describing the interaction of a relativistic hydrogen atom with a Gaussian pulsed laser beam. We discuss potential reconfiguration of the ESS accelerator to minimize the bunch length and energy spread at the interaction point (IP) with the laser beam, as well as adjustments to the lattice of the linac-to-ring transfer line to maximize the stripping and injection efficiency.
This project Funded by the European Union, Project 101094628. Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union. Neither the European Union nor the granting authority can be held responsible for them. This project has been funded in part by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)-Projektnummer 423761110.
Funding Agency
This project Funded by the European Union, Project 101094628.
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