Energy spread minimization in a beam-driven plasma wakefield accelerator

Pompili, R.; Alesini, D.; Anania, M. P.; Behtouei, Mostafa; Bellaveglia, M.; Biagioni, A.; Bisesto, F.; Cesarini, Monica; Chiadroni, E.; Cianchi, A.; Costa, G.; Croia, M.; Dotto, Alessio Del; Giovenale, D. Di; Diomede, M.; Dipace, Felice; Ferrario, M.; Lollo, V.; Magnisi, L.; Marongiu, Marco; Mostacci, A.; Piersanti, L.; Pirro, G. Di; Romeo, S.; Rossi, A. R.; Scifo, J.; Shpakov, V.; Vaccarezza, C.; Villa, F.; Zigler, A.

doi:10.1038/s41567-020-01116-9

Cited by 42 publications

(23 citation statements)

References 35 publications

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“…In this framework the work of SPARC LAB is of paramount importance, in order to develop new technologies and to study the interaction between beams and plasmas. Recently an energy spread minimization has been achieved [ 13 ] at the level of a few per mile. With such a beam we have been able to drive six undulator modules, observing significant light amplification in the FEL process.…”

Section: Eupraxia At Sparc Labmentioning

confidence: 99%

“…For laser-driven wakefield accelerators (LWFAs), energies up to 8 GeV energy gain have been reported [ 7 ] , as well as per-mille level energy spread [ 8 ] , 10–100 pC charge, few-femtosecond beam duration [ 9 ] , sub-millirad divergence, few-micrometer source size [ 10 ] , and repetition rates up to 10 Hz (and planned for kilohertz). For beam-driven wakefield accelerators (PWFAs), energies up to 84 GeV (42 GeV energy gain) have been reported [ 11 ] , as well as per-mille-level energy spread [ 12 , 13 ] , 10–100 pC charge, tens of femtosecond beam duration [ 14 , 15 ] , micrometer-level normalized emittance [ 16 ] , 10 m level source size, and few hertz repetition rates. With these properties already having been demonstrated, there are a growing number of experimental programs interested in using these electron beams to drive next-generation light sources.…”

Section: Introductionmentioning

confidence: 99%

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Free electron lasers driven by plasma accelerators: status and near-term prospects

Emma

Tilborg

Aßmann

et al. 2021

High Pow Laser Sci Eng

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Owing to their ultra-high accelerating gradients, combined with injection inside micrometer-scale accelerating wakefield buckets, plasma-based accelerators hold great potential to drive a new generation of free-electron lasers (FELs). Indeed, the first demonstration of plasma-driven FEL gain was reported recently, representing a major milestone for the field. Several groups around the world are pursuing these novel light sources, with methodology varying in the use of wakefield driver (laser-driven or beam-driven), plasma structure, phase-space manipulation, beamline design, and undulator technology, among others. This paper presents our best attempt to provide a comprehensive overview of the global community efforts towards plasma-based FEL research and development.

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Section: Eupraxia At Sparc Labmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Free electron lasers driven by plasma accelerators: status and near-term prospects

Emma

Tilborg

Aßmann

et al. 2021

High Pow Laser Sci Eng

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“…In last several years laser driven wakefield accelerated (LWFA) electron beams were successfully used to demonstrate production of radiation from undulators [18][19][20][21][22] or Thomson scattering [23]. However, the further advancement of such plasma based sources, like FEL radiation, requires substantial improvement of the beam quality in terms of energy spread and emittance [24,25]. In this letter we report the results of a beam-driven plasma wakefield acceleration (PWFA) [26][27][28] experiment conducted at the SPARC LAB test-facility [29].…”

mentioning

confidence: 99%

“…Initially preformed by a RF-linac a high quality witness beam was accelerated in plasma and characterized. Using a technique for energy spread minimization described in [24] we have achieved resulting energy spread of the PWFA beam of the order of 0.2%. Such energy spread allowed us to transport the beam through a conventional transfer line and use standard multi-shot diagnostics based on quadrupole-scan.…”

mentioning

confidence: 99%

“…Such empty shots are attributed to misfire of the gas/discharge system. The small energy spread of the beam is a paramount characteristics for high quality beams, thus in this work was employed a recently developed technique [24]. By using a combination of the positive energy-chirp (larger energy particles on the head of the bunch) and beam-loading effects we were able to mitigate any energy spread growth, but also to achieve a slight reduction of the total energy spread by removing, partially, the correlated one.…”

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confidence: 99%

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First emittance measurement of the beam-driven plasma wakefield accelerated electron beam

Shpakov,

Anania,

Behtouei

et al. 2021

Preprint

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Next-generation plasma-based accelerators can push electron beams to GeV energies within centimetre 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 letter we present 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 µm resulting normalized transverse emittance after the acceleration. In this article, for the first time to our knowledge, the emittance of the PWFA beam was directly measured.

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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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Energy spread minimization in a beam-driven plasma wakefield accelerator

Cited by 42 publications

References 35 publications

Free electron lasers driven by plasma accelerators: status and near-term prospects

Free electron lasers driven by plasma accelerators: status and near-term prospects

First emittance measurement of the beam-driven plasma wakefield accelerated electron beam

Plasma Photocathodes

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