Observation of Monoenergetic Electrons from Two-Pulse Ionization Injection in Quasilinear Laser Wakefields

Leyen, M. W. von der; Holloway, J.; Ma, Yunlong; Campbell, Paul; Aboushelbaya, Ramy; Qian, Q.; Balcazar, Mario; Cardarelli, Jason; Feng, Qingsong; Fitzgarrald, R.; Hou, Bixue; Kalinchenko, G.; Latham, J.; Maksimchuk, A.; McKelvey, A.; Nees, John; Ouatu, I.; Paddock, Robert W.; Spiers, Ben; Thomas, Alec; Timmis, R.; Krushelnick, K.; Norreys, P.

doi:10.1103/physrevlett.130.105002

Cited by 2 publications

(2 citation statements)

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“…[36]-and the use of two laser pulses at the same frequency, but different a 0 for ionization injection, [32] a scheme similarly recently realized experimentally. [37] After thermal emittance obtained during electron release by the plasma photocathode laser pulse, emittance contributions due to transverse betatron phase mixing [27,38] set in, and at higher charge levels space charge begins to dominate the obtainable emittance levels. The principal benefit of confined ionization volumes is the reduced emittance contribution from betatron phasemixing, and may be useful in particular in the low charge regime, where in turn space charge emittance contributions are still low.…”

Section: The Plasma Photocathodementioning

confidence: 99%

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Plasma Photocathodes

Habib,

Heinemann,

Manahan

et al. 2023

Annalen der Physik

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Plasma wakefield accelerators offer accelerating and focusing electric fields three to four orders of magnitude larger than state‐of‐the‐art radiofrequency cavity‐based accelerators. Plasma photocathodes can release ultracold electron populations within such plasma waves and thus open a path toward tunable production of well‐defined, compact electron beams with normalized emittance and brightness many orders of magnitude better than state‐of‐the‐art. Such beams will have far‐reaching impact for applications such as light sources, but also open up new vistas on high energy and high field physics. This paper reviews the innovation of plasma photocathodes, and reports on the experimental progress, challenges, and future prospects of the approach. Details of the proof‐of‐concept demonstration of a plasma photocathode in 90° geometry at SLAC FACET within the E‐210: Trojan Horse program are described. Using this experience, alongside theoretical and simulation‐supported advances, an outlook is given on future realizations of plasma photocathodes such as the upcoming E‐310: Trojan Horse‐II program at FACET‐II with prospects toward excellent witness beam parameter quality, tunability, and stability. Future installations of plasma photocathodes also at compact, hybrid plasma wakefield accelerators, will then boost capacities and open up novel capabilities for experiments at the forefront of interaction of high brightness electron and photon beams.

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Section: The Plasma Photocathodementioning

confidence: 99%

“…[36]—and the use of two laser pulses at the same frequency, but different a 0 for ionization injection, [ 32 ] a scheme similarly recently realized experimentally. [ 37 ]…”

Section: The Plasma Photocathodementioning

confidence: 99%