First emittance measurement of the beam-driven plasma wakefield accelerated electron beam
Abstract
Next-generation plasma-based accelerators can push electron beams to GeV energies within centimeter distances. The plasma, excited by a driver pulse, is indeed able to sustain huge electric fields that can efficiently accelerate a trailing witness bunch, which was experimentally demonstrated on multiple occasions. Thus, the main focus of the current research is being shifted towards achieving a high quality of the beam after the plasma acceleration. In this paper we present a beam-driven plasma wakefield acceleration experiment, where initially preformed high-quality witness beam was accelerated inside the plasma and characterized. In this experiment the witness beam quality after the acceleration was maintained on high level, with 0.2% final energy spread and 3.8 μ m resulting normalized transverse emittance after the acceleration. In this article, for the first time to our knowledge, the emittance of the plasma wakefield accelerated beam was directly measured.
- Publication:
-
Physical Review Accelerators and Beams
- Pub Date:
- May 2021
- DOI:
- 10.1103/PhysRevAccelBeams.24.051301
- arXiv:
- arXiv:2104.04236
- Bibcode:
- 2021PhRvS..24e1301S
- Keywords:
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- Physics - Accelerator Physics
- E-Print:
- doi:10.1103/PhysRevAccelBeams.24.051301