Journal
PHYSICAL REVIEW ACCELERATORS AND BEAMS
Volume 24, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevAccelBeams.24.051301
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Funding
- EU Commission in the Seventh Framework Program [312453-EuCARD-2]
- European Union [653782]
- INFN [GRANT73/PLADIP]
- 5th National Scientific Committee of the INFN
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This paper presents an experiment of beam-driven plasma wakefield acceleration, where a high-quality witness beam was successfully accelerated inside the plasma and characterized. The experiment showed that the quality of the witness beam can be maintained at a high level after the acceleration in the plasma.
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 ?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.
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