Speaker
Description
The Steady-State Micro Bunching (SSMB) scheme holds great promise for generating high-power extreme ultraviolet (EUV) radiation. To achieve a 1 kW EUV output, a storage ring operating with an average current of 1 A and harmonic cavities for bunch lengthening is required to mitigate intra-beam scattering (IBS). However, the combination of high beam current and harmonic cavities induces severe transient beam loading (TBL) and periodic transient beam loading (PTBL), leading to bunch center shifts that severely degrade the laser-electron modulation efficiency. This paper evaluates the stringent tolerance for bunch shift and propose a mitigation strategy that combines low-$(R/Q)_h$ cavity design to suppress PTBL and a newly developed Gap-Induced Linear Decomposition (GILD) analytical model to cancel TBL. Unlike numerical methods, the GILD model provides a closed-form expression for the required compensation voltage. Macroparticle tracking utilizing the STABLE code verifies that this approach restricts the bunch center shift to the picosecond level.
| In which format do you inted to submit your paper? | LaTeX |
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