Dresden 2026 – scientific programme
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AKBP: Arbeitskreis Beschleunigerphysik
AKBP 13: Novel Accelerators II
AKBP 13.2: Talk
Thursday, March 12, 2026, 11:45–12:00, SCH/A117
Temperature diagnostics for MHz-repetition-rate plasma accelerator sources — •Juan Pablo Díaz1,2, Judita Beinortaite1, Maryam Huck1, Harry Jones1, Anna Křivková1, Gregor Loisch1, Gudrid Moortgat-Pick1,2, Lukas Müller1, Trupen Parikh1, Stephan Wesch1, Matthew Wing3,1, and Jonathan Wood1 — 1DESY, Hamburg, Germany — 2Universität Hamburg, Germany — 3University College London, UK
Electron-bunch-driven plasma-wakefield accelerators promise to revolutionize particle acceleration by providing compact and cost-effective energy boosters for electron linacs which could, for example, significantly enhance the photon energies produced by free-electron lasers. The FLASHForward facility at DESY has made substantial progress, demonstrating that accelerated electron bunches can maintain their charge, energy spread, and emittance during plasma acceleration. A major challenge remains in achieving high-repetition-rate operation. Reaching MHz-level repetition rates, necessary to match superconducting RF linac bunch patterns, means generating reproducible plasma acceleration events at MHz frequencies. Doing so poses significant challenges: keeping the plasma density uniform over these rapid cycles and dealing with the high heat load placed on the plasma cell by the plasma formation process and the drive beam. In this contribution, we report on recent efforts to characterize the long-term heating effects arising in a discharge plasma source at repetition rates up to 1 kHz. We will present measurements of the time evolution of the discharge plasma source and discuss the implications of these results.
Keywords: Plasma wakefield acceleration; Beam-driven plasma accelerator; Plasma diagnostics