IPAC2017 - List of Authors (Smith, J.D.A.)

Paper	Title	Page
TUYB1	First Measurements of Trojan Horse Injection in a Plasma Wakefield Accelerator	1252
	B. Hidding, A. Beaton, A.F. Habib, T. Heinemann, G.G. Manahan, P. Scherkl, A. Sutherland, D. Ullmann USTRAT/SUPA, Glasgow, United Kingdom E. Adli, C.A. Lindstrøm University of Oslo, Oslo, Norway E. Adli, S.J. Gessner CERN, Geneva, Switzerland G. Andonian, A. Deng, J.B. Rosenzweig UCLA, Los Angeles, California, USA G. Andonian RadiaBeam, Santa Monica, California, USA A. Beaton, A.F. Habib, T. Heinemann, B. Hidding, G.G. Manahan, P. Scherkl, A. Sutherland, D. Ullmann Cockcroft Institute, Warrington, Cheshire, United Kingdom D.L. Bruhwiler RadiaSoft LLC, Boulder, Colorado, USA J.R. Cary Tech-X, Boulder, Colorado, USA C.I. Clarke, S.Z. Green, M.J. Hogan, B.D. O'Shea, V. Yakimenko SLAC, Menlo Park, California, USA M. Downer, R. Zgadzaj The University of Texas at Austin, Austin, Texas, USA T. Heinemann, A. Knetsch DESY, Hamburg, Germany T. Heinemann, G. Wittig University of Hamburg, Hamburg, Germany O.S. Karger University of Hamburg, Institut für Experimentalphysik, Hamburg, Germany M.D. Litos Colorado University at Boulder, Boulder, Colorado, USA J.D.A. Smith TXUK, Warrington, United Kingdom
	Funding: Work supported in part by the U.S. Department of Energy under contract number DE-AC02-76SF00515. Plasma accelerators support accelerating fields of 100's of GV/m over meter-scale distances and routinely produce femtosecond-scale, multi-kA electron bunches. The so called Trojan Horse underdense photocathode plasma wakefield acceleration scheme combines state-of-the-art accelerator technology with laser and plasma methods and paves the way to improve beam quality as regards emittance and energy spread by many orders of magnitude. Electron beam brightness levels exceeding 10²⁰ Am^-2 rad^-2 may be reached, and the tunability allows for multi-GeV energies, designer bunches and energy spreads <0.05% in a single plasma accelerator stage. The talk will present results of the international E210 multi-year experimental program at SLAC FACET, which culminated in successful first demonstration of the Trojan Horse method during FACET's final experimental run in 2016. Enabling implications for applications, including high performance plasma-based 5th generation light sources such as hard x-ray FEL's, for which start-to-end simulations are presented, and for high energy physics are discussed.
	Slides TUYB1 [19.089 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUYB1
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WEPAB097	Modelling Two-Colour FEL with Wide Wavelength Separation and Individual Polarisation Tuning	2808
SUSPSIK016	use link to see paper's listing under its alternate paper code
	D. Bultrini, N. Thompson Cockcroft Institute, Warrington, Cheshire, United Kingdom R.J. Allan The Hartree Centre, Science and Technology Facilities Council (STFC/DL), Warrington, United Kingdom L.T. Campbell, B.W.J. MᶜNeil USTRAT/SUPA, Glasgow, United Kingdom D.J. Dunning, N. Thompson STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom J.D.A. Smith TXUK, Warrington, United Kingdom
	Free electron lasers (FELs) are currently enabling cutting edge research in chemistry, biology and physics. We use simulations to assess a new FEL capability that would add to the impressive repertoire of experiments made possible by the technology: a two-colour independent polarization mode, which allows for light pulses with variable temporal separation, individually tuneable polarisation, and widely separated wavelength. Simulations are carried out using the broad bandwidth FEL code Puffin, the results of which are used to discuss the radiation properties of the output. This scheme is applicable to existing and proposed facilities which feature undulators with variable ellipticity and gap.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-WEPAB097
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WEPVA020	Dual-Grating Dielectric Accelerators Driven by A Pulse-Front-Tilted Laser	3299
	Y. Wei, C.P. Welsch The University of Liverpool, Liverpool, United Kingdom M.M. Dehler, E. Ferrari, N. Hiller, R. Ischebeck PSI, Villigen PSI, Switzerland J.D.A. Smith TXUK, Warrington, United Kingdom C.P. Welsch Cockcroft Institute, Warrington, Cheshire, United Kingdom G.X. Xia UMAN, Manchester, United Kingdom
	Dual-grating Dielectric Laser-driven Accelerators (DLAs) are considered to be one of the most promising technologies to miniaturize future particle accelerators. Accelerating gradients in the GV/m range seem accessible and 690 MV/m has been demonstrated in fused silica structures. However, the increase in beam energy is limited by the short interaction length between the laser pulses and the electron bunch. In this contribution, a pulse-front-tilt operation for a laser beam is studied to extend the interaction length, resulting in a greater energy gain for a dual-grating DLA. The VSIM code is used to compare this new scheme with the commonly used approach of a normally incident laser beam and advantages are summarized. [1]T. Plettner, et al., Phys. Rev. ST Accel. Beams 9, 111301 (2006) [2]K. P. Wootton, et al., Opt. Lett., 41, 2696 (2016). [3]E. A. Peralta, et al., Nature 503, 91 (2013)
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-WEPVA020
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Paper

Title

Page

First Measurements of Trojan Horse Injection in a Plasma Wakefield Accelerator

1252

B. Hidding, A. Beaton, A.F. Habib, T. Heinemann, G.G. Manahan, P. Scherkl, A. Sutherland, D. Ullmann
USTRAT/SUPA, Glasgow, United Kingdom
E. Adli, C.A. Lindstrøm
University of Oslo, Oslo, Norway
E. Adli, S.J. Gessner
CERN, Geneva, Switzerland
G. Andonian, A. Deng, J.B. Rosenzweig
UCLA, Los Angeles, California, USA
G. Andonian
RadiaBeam, Santa Monica, California, USA
A. Beaton, A.F. Habib, T. Heinemann, B. Hidding, G.G. Manahan, P. Scherkl, A. Sutherland, D. Ullmann
Cockcroft Institute, Warrington, Cheshire, United Kingdom
D.L. Bruhwiler
RadiaSoft LLC, Boulder, Colorado, USA
J.R. Cary
Tech-X, Boulder, Colorado, USA
C.I. Clarke, S.Z. Green, M.J. Hogan, B.D. O'Shea, V. Yakimenko
SLAC, Menlo Park, California, USA
M. Downer, R. Zgadzaj
The University of Texas at Austin, Austin, Texas, USA
T. Heinemann, A. Knetsch
DESY, Hamburg, Germany
T. Heinemann, G. Wittig
University of Hamburg, Hamburg, Germany
O.S. Karger
University of Hamburg, Institut für Experimentalphysik, Hamburg, Germany
M.D. Litos
Colorado University at Boulder, Boulder, Colorado, USA
J.D.A. Smith
TXUK, Warrington, United Kingdom

Funding: Work supported in part by the U.S. Department of Energy under contract number DE-AC02-76SF00515.
Plasma accelerators support accelerating fields of 100's of GV/m over meter-scale distances and routinely produce femtosecond-scale, multi-kA electron bunches. The so called Trojan Horse underdense photocathode plasma wakefield acceleration scheme combines state-of-the-art accelerator technology with laser and plasma methods and paves the way to improve beam quality as regards emittance and energy spread by many orders of magnitude. Electron beam brightness levels exceeding 10²⁰ Am^-2 rad^-2 may be reached, and the tunability allows for multi-GeV energies, designer bunches and energy spreads <0.05% in a single plasma accelerator stage. The talk will present results of the international E210 multi-year experimental program at SLAC FACET, which culminated in successful first demonstration of the Trojan Horse method during FACET's final experimental run in 2016. Enabling implications for applications, including high performance plasma-based 5th generation light sources such as hard x-ray FEL's, for which start-to-end simulations are presented, and for high energy physics are discussed.

Slides TUYB1 [19.089 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUYB1

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPAB097

Modelling Two-Colour FEL with Wide Wavelength Separation and Individual Polarisation Tuning

2808

SUSPSIK016

use link to see paper's listing under its alternate paper code

D. Bultrini, N. Thompson
Cockcroft Institute, Warrington, Cheshire, United Kingdom
R.J. Allan
The Hartree Centre, Science and Technology Facilities Council (STFC/DL), Warrington, United Kingdom
L.T. Campbell, B.W.J. MᶜNeil
USTRAT/SUPA, Glasgow, United Kingdom
D.J. Dunning, N. Thompson
STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom
J.D.A. Smith
TXUK, Warrington, United Kingdom

Free electron lasers (FELs) are currently enabling cutting edge research in chemistry, biology and physics. We use simulations to assess a new FEL capability that would add to the impressive repertoire of experiments made possible by the technology: a two-colour independent polarization mode, which allows for light pulses with variable temporal separation, individually tuneable polarisation, and widely separated wavelength. Simulations are carried out using the broad bandwidth FEL code Puffin, the results of which are used to discuss the radiation properties of the output. This scheme is applicable to existing and proposed facilities which feature undulators with variable ellipticity and gap.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-WEPAB097

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPVA020

Dual-Grating Dielectric Accelerators Driven by A Pulse-Front-Tilted Laser

3299

Y. Wei, C.P. Welsch
The University of Liverpool, Liverpool, United Kingdom
M.M. Dehler, E. Ferrari, N. Hiller, R. Ischebeck
PSI, Villigen PSI, Switzerland
J.D.A. Smith
TXUK, Warrington, United Kingdom
C.P. Welsch
Cockcroft Institute, Warrington, Cheshire, United Kingdom
G.X. Xia
UMAN, Manchester, United Kingdom

Dual-grating Dielectric Laser-driven Accelerators (DLAs) are considered to be one of the most promising technologies to miniaturize future particle accelerators. Accelerating gradients in the GV/m range seem accessible and 690 MV/m has been demonstrated in fused silica structures. However, the increase in beam energy is limited by the short interaction length between the laser pulses and the electron bunch. In this contribution, a pulse-front-tilt operation for a laser beam is studied to extend the interaction length, resulting in a greater energy gain for a dual-grating DLA. The VSIM code is used to compare this new scheme with the commonly used approach of a normally incident laser beam and advantages are summarized.
[1]T. Plettner, et al., Phys. Rev. ST Accel. Beams 9, 111301 (2006)
[2]K. P. Wootton, et al., Opt. Lett., 41, 2696 (2016).
[3]E. A. Peralta, et al., Nature 503, 91 (2013)

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-WEPVA020

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)