Electron beam quality measurements on the ALPHA-X Laser-plasma wakefield accelerator

G. H. Welsh, M. P. Anania, C. Aniculaesei, E. Brunetti, R. T. L. Burgess, S. Cipiccia, D. Clark, B. Ersfeld, M. R. Islam, R. C. Issac, G. G. Manahan, T. McCanny, G. Raj, A.-J. W. Reitsma, R. P. Shanks, G. Vieux, S. M. Wiggins, D. A. Jaroszynski, W. A. Gillespie, A. M. MacLeod & 2 others S. B. van der Geer, M. J. de Loos

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

    Abstract

    The Advanced Laser-Plasma High-Energy Accelerators towards X-rays (ALPHA-X) programme at the University of Strathclyde is developing laser-plasma wakefield accelerators to produce high energy, ultra-short duration electron bunches as drivers of radiation sources. Coherent emission will be produced in a free-electron laser by focussing the ultra-short electron bunches into an undulator. To achieve net gain, high peak current, low energy spread and low emittance are required. A high intensity, ultra-short pulse from a 30 TW Ti:sapphire laser is focussed into a helium gas jet to produce femtosecond duration electron bunches in the range of 80-200 MeV. Beam transport is monitored using a series of Lanex screens positioned along the beam line. Measurements of the electron energy spectrum, obtained using the ALPHA-X high resolution magnetic dipole spectrometer, are presented. The maximum central energy of the monoenergetic beam is 90 MeV and r.m.s. relative energy spreads as low as 0.8% are measured. The mean central energy is 82 + 4 MeV and mean energy spread is 1.1 + 0.4%. We also present pepper-pot measurements of the normalised transverse emittance where mono-energetic electrons are passed through an array of 52µm diameter holes in tungsten. The analysis of the pepper-pot results sets an upper limit for the normalised emittance at 5.5 ± 1p mm mrad for an 82 MeV beam. With further acceleration to 1 GeV, the relative energy spread will reduce giving beam parameters that indicate the feasibility of a compact X-ray FEL driven by a plasma-wakefield accelerator.
    Original languageEnglish
    Title of host publicationIPAC' 10
    Subtitle of host publicationProceedings of the 1st International Particle Accelerator Conference
    Place of PublicationGeneva
    PublisherJACoW
    Pages1146-1148
    Number of pages3
    ISBN (Print)9789290833529
    Publication statusPublished - 2010
    Event1st International Particle Accelerator Conference - Kyoto International Conference Center, Kyoto, Japan
    Duration: 23 May 201028 May 2010
    http://ipac10.org/

    Conference

    Conference1st International Particle Accelerator Conference
    Abbreviated titleIPAC'10
    CountryJapan
    CityKyoto
    Period23/05/1028/05/10
    Internet address

    Fingerprint

    plasma accelerators
    laser plasmas
    accelerators
    electron beams
    x rays
    emittance
    peppers
    energy
    electrons
    gas jets
    low currents
    high gain
    radiation sources
    magnetic dipoles
    free electron lasers
    tungsten
    sapphire
    energy spectra
    helium
    spectrometers

    Cite this

    Welsh, G. H., Anania, M. P., Aniculaesei, C., Brunetti, E., Burgess, R. T. L., Cipiccia, S., ... de Loos, M. J. (2010). Electron beam quality measurements on the ALPHA-X Laser-plasma wakefield accelerator. In IPAC' 10 : Proceedings of the 1st International Particle Accelerator Conference (pp. 1146-1148). Geneva: JACoW.
    Welsh, G. H. ; Anania, M. P. ; Aniculaesei, C. ; Brunetti, E. ; Burgess, R. T. L. ; Cipiccia, S. ; Clark, D. ; Ersfeld, B. ; Islam, M. R. ; Issac, R. C. ; Manahan, G. G. ; McCanny, T. ; Raj, G. ; Reitsma, A.-J. W. ; Shanks, R. P. ; Vieux, G. ; Wiggins, S. M. ; Jaroszynski, D. A. ; Gillespie, W. A. ; MacLeod, A. M. ; van der Geer, S. B. ; de Loos, M. J. / Electron beam quality measurements on the ALPHA-X Laser-plasma wakefield accelerator. IPAC' 10 : Proceedings of the 1st International Particle Accelerator Conference. Geneva : JACoW, 2010. pp. 1146-1148
    @inproceedings{3eec95d505eb472f81120224c0475fdb,
    title = "Electron beam quality measurements on the ALPHA-X Laser-plasma wakefield accelerator",
    abstract = "The Advanced Laser-Plasma High-Energy Accelerators towards X-rays (ALPHA-X) programme at the University of Strathclyde is developing laser-plasma wakefield accelerators to produce high energy, ultra-short duration electron bunches as drivers of radiation sources. Coherent emission will be produced in a free-electron laser by focussing the ultra-short electron bunches into an undulator. To achieve net gain, high peak current, low energy spread and low emittance are required. A high intensity, ultra-short pulse from a 30 TW Ti:sapphire laser is focussed into a helium gas jet to produce femtosecond duration electron bunches in the range of 80-200 MeV. Beam transport is monitored using a series of Lanex screens positioned along the beam line. Measurements of the electron energy spectrum, obtained using the ALPHA-X high resolution magnetic dipole spectrometer, are presented. The maximum central energy of the monoenergetic beam is 90 MeV and r.m.s. relative energy spreads as low as 0.8{\%} are measured. The mean central energy is 82 + 4 MeV and mean energy spread is 1.1 + 0.4{\%}. We also present pepper-pot measurements of the normalised transverse emittance where mono-energetic electrons are passed through an array of 52µm diameter holes in tungsten. The analysis of the pepper-pot results sets an upper limit for the normalised emittance at 5.5 ± 1p mm mrad for an 82 MeV beam. With further acceleration to 1 GeV, the relative energy spread will reduce giving beam parameters that indicate the feasibility of a compact X-ray FEL driven by a plasma-wakefield accelerator.",
    author = "Welsh, {G. H.} and Anania, {M. P.} and C. Aniculaesei and E. Brunetti and Burgess, {R. T. L.} and S. Cipiccia and D. Clark and B. Ersfeld and Islam, {M. R.} and Issac, {R. C.} and Manahan, {G. G.} and T. McCanny and G. Raj and Reitsma, {A.-J. W.} and Shanks, {R. P.} and G. Vieux and Wiggins, {S. M.} and Jaroszynski, {D. A.} and Gillespie, {W. A.} and MacLeod, {A. M.} and {van der Geer}, {S. B.} and {de Loos}, {M. J.}",
    year = "2010",
    language = "English",
    isbn = "9789290833529",
    pages = "1146--1148",
    booktitle = "IPAC' 10",
    publisher = "JACoW",

    }

    Welsh, GH, Anania, MP, Aniculaesei, C, Brunetti, E, Burgess, RTL, Cipiccia, S, Clark, D, Ersfeld, B, Islam, MR, Issac, RC, Manahan, GG, McCanny, T, Raj, G, Reitsma, A-JW, Shanks, RP, Vieux, G, Wiggins, SM, Jaroszynski, DA, Gillespie, WA, MacLeod, AM, van der Geer, SB & de Loos, MJ 2010, Electron beam quality measurements on the ALPHA-X Laser-plasma wakefield accelerator. in IPAC' 10 : Proceedings of the 1st International Particle Accelerator Conference. JACoW, Geneva, pp. 1146-1148, 1st International Particle Accelerator Conference, Kyoto, Japan, 23/05/10.

    Electron beam quality measurements on the ALPHA-X Laser-plasma wakefield accelerator. / Welsh, G. H.; Anania, M. P.; Aniculaesei, C.; Brunetti, E.; Burgess, R. T. L.; Cipiccia, S.; Clark, D.; Ersfeld, B.; Islam, M. R.; Issac, R. C.; Manahan, G. G.; McCanny, T.; Raj, G.; Reitsma, A.-J. W.; Shanks, R. P.; Vieux, G.; Wiggins, S. M.; Jaroszynski, D. A.; Gillespie, W. A.; MacLeod, A. M.; van der Geer, S. B.; de Loos, M. J.

    IPAC' 10 : Proceedings of the 1st International Particle Accelerator Conference. Geneva : JACoW, 2010. p. 1146-1148.

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

    TY - GEN

    T1 - Electron beam quality measurements on the ALPHA-X Laser-plasma wakefield accelerator

    AU - Welsh, G. H.

    AU - Anania, M. P.

    AU - Aniculaesei, C.

    AU - Brunetti, E.

    AU - Burgess, R. T. L.

    AU - Cipiccia, S.

    AU - Clark, D.

    AU - Ersfeld, B.

    AU - Islam, M. R.

    AU - Issac, R. C.

    AU - Manahan, G. G.

    AU - McCanny, T.

    AU - Raj, G.

    AU - Reitsma, A.-J. W.

    AU - Shanks, R. P.

    AU - Vieux, G.

    AU - Wiggins, S. M.

    AU - Jaroszynski, D. A.

    AU - Gillespie, W. A.

    AU - MacLeod, A. M.

    AU - van der Geer, S. B.

    AU - de Loos, M. J.

    PY - 2010

    Y1 - 2010

    N2 - The Advanced Laser-Plasma High-Energy Accelerators towards X-rays (ALPHA-X) programme at the University of Strathclyde is developing laser-plasma wakefield accelerators to produce high energy, ultra-short duration electron bunches as drivers of radiation sources. Coherent emission will be produced in a free-electron laser by focussing the ultra-short electron bunches into an undulator. To achieve net gain, high peak current, low energy spread and low emittance are required. A high intensity, ultra-short pulse from a 30 TW Ti:sapphire laser is focussed into a helium gas jet to produce femtosecond duration electron bunches in the range of 80-200 MeV. Beam transport is monitored using a series of Lanex screens positioned along the beam line. Measurements of the electron energy spectrum, obtained using the ALPHA-X high resolution magnetic dipole spectrometer, are presented. The maximum central energy of the monoenergetic beam is 90 MeV and r.m.s. relative energy spreads as low as 0.8% are measured. The mean central energy is 82 + 4 MeV and mean energy spread is 1.1 + 0.4%. We also present pepper-pot measurements of the normalised transverse emittance where mono-energetic electrons are passed through an array of 52µm diameter holes in tungsten. The analysis of the pepper-pot results sets an upper limit for the normalised emittance at 5.5 ± 1p mm mrad for an 82 MeV beam. With further acceleration to 1 GeV, the relative energy spread will reduce giving beam parameters that indicate the feasibility of a compact X-ray FEL driven by a plasma-wakefield accelerator.

    AB - The Advanced Laser-Plasma High-Energy Accelerators towards X-rays (ALPHA-X) programme at the University of Strathclyde is developing laser-plasma wakefield accelerators to produce high energy, ultra-short duration electron bunches as drivers of radiation sources. Coherent emission will be produced in a free-electron laser by focussing the ultra-short electron bunches into an undulator. To achieve net gain, high peak current, low energy spread and low emittance are required. A high intensity, ultra-short pulse from a 30 TW Ti:sapphire laser is focussed into a helium gas jet to produce femtosecond duration electron bunches in the range of 80-200 MeV. Beam transport is monitored using a series of Lanex screens positioned along the beam line. Measurements of the electron energy spectrum, obtained using the ALPHA-X high resolution magnetic dipole spectrometer, are presented. The maximum central energy of the monoenergetic beam is 90 MeV and r.m.s. relative energy spreads as low as 0.8% are measured. The mean central energy is 82 + 4 MeV and mean energy spread is 1.1 + 0.4%. We also present pepper-pot measurements of the normalised transverse emittance where mono-energetic electrons are passed through an array of 52µm diameter holes in tungsten. The analysis of the pepper-pot results sets an upper limit for the normalised emittance at 5.5 ± 1p mm mrad for an 82 MeV beam. With further acceleration to 1 GeV, the relative energy spread will reduce giving beam parameters that indicate the feasibility of a compact X-ray FEL driven by a plasma-wakefield accelerator.

    UR - http://www.scopus.com/inward/record.url?scp=84886888218&partnerID=8YFLogxK

    M3 - Conference contribution

    SN - 9789290833529

    SP - 1146

    EP - 1148

    BT - IPAC' 10

    PB - JACoW

    CY - Geneva

    ER -

    Welsh GH, Anania MP, Aniculaesei C, Brunetti E, Burgess RTL, Cipiccia S et al. Electron beam quality measurements on the ALPHA-X Laser-plasma wakefield accelerator. In IPAC' 10 : Proceedings of the 1st International Particle Accelerator Conference. Geneva: JACoW. 2010. p. 1146-1148