Details

Autor(en) / Beteiligte

• Lemery, F
• Piot, P
• Amatuni, G
• Boonpornprasert, P
• Chen, Y
• Good, J
• Grigoryan, B
• Groß, M
• Krasilinikov, M
• Lishilin, O
• Loisch, G
• Oppelt, A
• Philipp, S
• Qian, H
• Renier, Y
• Stephan, F
• Zagorodnov, I

Titel

Passive Ballistic Microbunching of Nonultrarelativistic Electron Bunches Using Electromagnetic Wakefields in Dielectric-Lined Waveguides

Ist Teil von

• Physical review letters, 2019-02, Vol.122 (4), p.044801-044801, Article 044801

Ort / Verlag

United States: American Physical Society

Erscheinungsjahr

2019

Link zum Volltext

Quelle

American Physical Society [PROLA]

Beschreibungen/Notizen

• Temporally modulated electron beams have a wide array of applications ranging from the generation of coherently enhanced electromagnetic radiation to the resonant excitation of electromagnetic wakefields in advanced-accelerator concepts. Likewise producing low-energy ultrashort microbunches could be useful for ultrafast electron diffraction and new accelerator-based light-source concepts. In this Letter we propose and experimentally demonstrate a passive microbunching technique capable of forming a picosecond bunch train at ∼6  MeV. The method relies on the excitation of electromagnetic wakefields as the beam propagates through a dielectric-lined waveguide. Owing to the nonultrarelativistic nature of the beam, the induced energy modulation eventually converts into a density modulation as the beam travels in a following free-space drift. The modulated beam is further accelerated to ∼20  MeV while preserving the imparted density modulation.