High-quality 5 GeV electron bunches with resonant multi-pulse ionization injection. (24th October 2019)

• Record Type: Journal Article
• Authors: Tomassini, P; Terzani, D; Baffigi, F; Brandi, F; Fulgentini, L; Koester, P; Labate, L; Palla, D; Gizzi, L A
• Is Part Of: Plasma physics and controlled fusion. Volume 62:Number 1(2020)
• Publication Date: 2019-10-24
• Subjects: laser-plasma acceleration -- high-brightness beams -- resonant multi-pulse ionization injection -- multi-pulse laser wake field acceleration -- free electron lasers -- high-quality electron beams; Plasma (Ionized gases) -- Periodicals; Controlled fusion -- Periodicals; 530.44
• DOI: 10.1088/1361-6587/ab45c5
• Languages: English
• ISSNs: 0741-3335

Abstract

Abstract: The production of high-quality electron bunches in laser wakefield acceleration relies on the possibility of injecting ultra-low emittance bunches in the plasma wave. A new bunch injection scheme (resonant multi-pulse ionization, ReMPI) has been conceived and studied, in which electrons extracted by ionization are trapped by a large-amplitude plasma wave driven by a train of resonant ultrashort pulses. Such a train of pulses can be obtained in a very efficient, compact and stable way, by phase manipulation in the laser front-end. The ReMPI injection scheme relies on currently available laser technology and is being considered for the implementation of future compact x-ray free electron laser schemes. Simulations show that high-quality electron bunches with an energy of up to 5 GeV and a peak current exceeding 2 kA, with normalized emittance of below 0.1 mm × mrad and a slice energy spread of below 0.1%, can be obtained with a single stage.