Plasma density shaping for attosecond electron bunch generation

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

High energy attosecond electron bunches from the laser-plasma wakefield accelerator (LWFA) are potentially useful sources of ultra-short duration X-rays pulses, which can be used for ultrafast imaging of electron motion in biological and physical systems. Electron injection in the LWFA depends on the plasma density and gradient, and the laser intensity. Recent research has shown that injection of attosecond electron bunches is possible using a short plasma density ramp. For controlled injection it is necessary to keep both the laser intensity and background plasma density constant, but set to just below the threshold for injection. This ensures that injection is only triggered by an imposed density perturbation; the peak density should also not exceed the threshold for injection. A density gradient that only persists over a short range
can lead to the injection of femtosecond duration bunches, which are then Lorentz contracted to attoseconds on injection. We consider an example of a sin^2 shaped modulation where the gradient varies until the downward slope exceeds the threshold for injection and then reduces subsequently to prevent any further injection. The persistence above the threshold determines the injected bunch length, which can be varied. We consider several designs of plasma media including density perturbations formed by shaped Laval nozzles and present an experimental and theoretical study of the modulated media suitable for producing attosecond-duration electron bunches.
LanguageEnglish
Title of host publicationRelativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources III - Proceedings
EditorsMinSup Hur, Dino A. Jaroszynski
Place of PublicationBellingham, WA
Number of pages10
Volume11036
ISBN (Electronic)9781510627383
DOIs
Publication statusPublished - 24 Apr 2019
EventSPIE Optics + Optoelectronics - Clarion Congress Hotel, Prague, Czech Republic
Duration: 1 Apr 20194 Apr 2019

Conference

ConferenceSPIE Optics + Optoelectronics
CountryCzech Republic
CityPrague
Period1/04/194/04/19

Fingerprint

plasma density
injection
electrons
plasma accelerators
thresholds
laser plasmas
gradients
perturbation
ramps
high energy electrons
nozzles
lasers
slopes
modulation
pulses

Keywords

  • plasma
  • laser wakefield accelerators
  • attosecond electron bunches

Cite this

Kornaszewski, A., Spesyvtsev, R., Shahzad, M., Brunetti, E., Wachulak, P. W., Fok, T., ... Jaroszynski, D. (2019). Plasma density shaping for attosecond electron bunch generation. In M. Hur, & D. A. Jaroszynski (Eds.), Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources III - Proceedings (Vol. 11036). [110360R] Bellingham, WA. https://doi.org/10.1117/12.2522780
Kornaszewski, Andrzej ; Spesyvtsev, Roman ; Shahzad, Mohammed ; Brunetti, Enrico ; Wachulak, Przemysław W. ; Fok, Tomasz ; Węgrzyński, Łukasz ; Battaglia, Giorgio ; Ersfeld, Bernhard ; Feehan, James ; Inigo Gamiz, Lucas Ivan ; Kokurewicz, Karolina ; Li, Wentao ; Maitrallain, Antoine ; Noble, Adam ; Reid, Lewis ; Tooley, Matthew ; Vieux, Gregory ; Wiggins, Samuel ; Yoffe, Samuel ; Fiedorowicz, Henryk ; Jaroszynski, Dino. / Plasma density shaping for attosecond electron bunch generation. Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources III - Proceedings. editor / MinSup Hur ; Dino A. Jaroszynski. Vol. 11036 Bellingham, WA, 2019.
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title = "Plasma density shaping for attosecond electron bunch generation",
abstract = "High energy attosecond electron bunches from the laser-plasma wakefield accelerator (LWFA) are potentially useful sources of ultra-short duration X-rays pulses, which can be used for ultrafast imaging of electron motion in biological and physical systems. Electron injection in the LWFA depends on the plasma density and gradient, and the laser intensity. Recent research has shown that injection of attosecond electron bunches is possible using a short plasma density ramp. For controlled injection it is necessary to keep both the laser intensity and background plasma density constant, but set to just below the threshold for injection. This ensures that injection is only triggered by an imposed density perturbation; the peak density should also not exceed the threshold for injection. A density gradient that only persists over a short rangecan lead to the injection of femtosecond duration bunches, which are then Lorentz contracted to attoseconds on injection. We consider an example of a sin^2 shaped modulation where the gradient varies until the downward slope exceeds the threshold for injection and then reduces subsequently to prevent any further injection. The persistence above the threshold determines the injected bunch length, which can be varied. We consider several designs of plasma media including density perturbations formed by shaped Laval nozzles and present an experimental and theoretical study of the modulated media suitable for producing attosecond-duration electron bunches.",
keywords = "plasma, laser wakefield accelerators, attosecond electron bunches",
author = "Andrzej Kornaszewski and Roman Spesyvtsev and Mohammed Shahzad and Enrico Brunetti and Wachulak, {Przemysław W.} and Tomasz Fok and Łukasz Węgrzyński and Giorgio Battaglia and Bernhard Ersfeld and James Feehan and {Inigo Gamiz}, {Lucas Ivan} and Karolina Kokurewicz and Wentao Li and Antoine Maitrallain and Adam Noble and Lewis Reid and Matthew Tooley and Gregory Vieux and Samuel Wiggins and Samuel Yoffe and Henryk Fiedorowicz and Dino Jaroszynski",
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doi = "10.1117/12.2522780",
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editor = "MinSup Hur and Jaroszynski, {Dino A.}",
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Kornaszewski, A, Spesyvtsev, R, Shahzad, M, Brunetti, E, Wachulak, PW, Fok, T, Węgrzyński, Ł, Battaglia, G, Ersfeld, B, Feehan, J, Inigo Gamiz, LI, Kokurewicz, K, Li, W, Maitrallain, A, Noble, A, Reid, L, Tooley, M, Vieux, G, Wiggins, S, Yoffe, S, Fiedorowicz, H & Jaroszynski, D 2019, Plasma density shaping for attosecond electron bunch generation. in M Hur & DA Jaroszynski (eds), Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources III - Proceedings. vol. 11036, 110360R, Bellingham, WA, SPIE Optics + Optoelectronics, Prague, Czech Republic, 1/04/19. https://doi.org/10.1117/12.2522780

Plasma density shaping for attosecond electron bunch generation. / Kornaszewski, Andrzej; Spesyvtsev, Roman; Shahzad, Mohammed; Brunetti, Enrico; Wachulak, Przemysław W.; Fok, Tomasz; Węgrzyński, Łukasz; Battaglia, Giorgio; Ersfeld, Bernhard; Feehan, James; Inigo Gamiz, Lucas Ivan; Kokurewicz, Karolina; Li, Wentao; Maitrallain, Antoine; Noble, Adam; Reid, Lewis; Tooley, Matthew; Vieux, Gregory; Wiggins, Samuel; Yoffe, Samuel; Fiedorowicz, Henryk; Jaroszynski, Dino.

Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources III - Proceedings. ed. / MinSup Hur; Dino A. Jaroszynski. Vol. 11036 Bellingham, WA, 2019. 110360R.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

TY - GEN

T1 - Plasma density shaping for attosecond electron bunch generation

AU - Kornaszewski, Andrzej

AU - Spesyvtsev, Roman

AU - Shahzad, Mohammed

AU - Brunetti, Enrico

AU - Wachulak, Przemysław W.

AU - Fok, Tomasz

AU - Węgrzyński, Łukasz

AU - Battaglia, Giorgio

AU - Ersfeld, Bernhard

AU - Feehan, James

AU - Inigo Gamiz, Lucas Ivan

AU - Kokurewicz, Karolina

AU - Li, Wentao

AU - Maitrallain, Antoine

AU - Noble, Adam

AU - Reid, Lewis

AU - Tooley, Matthew

AU - Vieux, Gregory

AU - Wiggins, Samuel

AU - Yoffe, Samuel

AU - Fiedorowicz, Henryk

AU - Jaroszynski, Dino

PY - 2019/4/24

Y1 - 2019/4/24

N2 - High energy attosecond electron bunches from the laser-plasma wakefield accelerator (LWFA) are potentially useful sources of ultra-short duration X-rays pulses, which can be used for ultrafast imaging of electron motion in biological and physical systems. Electron injection in the LWFA depends on the plasma density and gradient, and the laser intensity. Recent research has shown that injection of attosecond electron bunches is possible using a short plasma density ramp. For controlled injection it is necessary to keep both the laser intensity and background plasma density constant, but set to just below the threshold for injection. This ensures that injection is only triggered by an imposed density perturbation; the peak density should also not exceed the threshold for injection. A density gradient that only persists over a short rangecan lead to the injection of femtosecond duration bunches, which are then Lorentz contracted to attoseconds on injection. We consider an example of a sin^2 shaped modulation where the gradient varies until the downward slope exceeds the threshold for injection and then reduces subsequently to prevent any further injection. The persistence above the threshold determines the injected bunch length, which can be varied. We consider several designs of plasma media including density perturbations formed by shaped Laval nozzles and present an experimental and theoretical study of the modulated media suitable for producing attosecond-duration electron bunches.

AB - High energy attosecond electron bunches from the laser-plasma wakefield accelerator (LWFA) are potentially useful sources of ultra-short duration X-rays pulses, which can be used for ultrafast imaging of electron motion in biological and physical systems. Electron injection in the LWFA depends on the plasma density and gradient, and the laser intensity. Recent research has shown that injection of attosecond electron bunches is possible using a short plasma density ramp. For controlled injection it is necessary to keep both the laser intensity and background plasma density constant, but set to just below the threshold for injection. This ensures that injection is only triggered by an imposed density perturbation; the peak density should also not exceed the threshold for injection. A density gradient that only persists over a short rangecan lead to the injection of femtosecond duration bunches, which are then Lorentz contracted to attoseconds on injection. We consider an example of a sin^2 shaped modulation where the gradient varies until the downward slope exceeds the threshold for injection and then reduces subsequently to prevent any further injection. The persistence above the threshold determines the injected bunch length, which can be varied. We consider several designs of plasma media including density perturbations formed by shaped Laval nozzles and present an experimental and theoretical study of the modulated media suitable for producing attosecond-duration electron bunches.

KW - plasma

KW - laser wakefield accelerators

KW - attosecond electron bunches

U2 - 10.1117/12.2522780

DO - 10.1117/12.2522780

M3 - Conference contribution book

VL - 11036

BT - Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources III - Proceedings

A2 - Hur, MinSup

A2 - Jaroszynski, Dino A.

CY - Bellingham, WA

ER -

Kornaszewski A, Spesyvtsev R, Shahzad M, Brunetti E, Wachulak PW, Fok T et al. Plasma density shaping for attosecond electron bunch generation. In Hur M, Jaroszynski DA, editors, Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources III - Proceedings. Vol. 11036. Bellingham, WA. 2019. 110360R https://doi.org/10.1117/12.2522780