Abstract
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the first International Particle Accelerator Conference (IPAC’10), Kyoto, 23-28 May 2010 |
| Pages | 1146-1148 |
| Number of pages | 3 |
| Publication status | Published - Jun 2010 |
| Event | 1st International Particle Accelerator Conference - Kyoto International Conference Centre (KICC), Kyoto, Japan Duration: 23 May 2010 → 28 May 2010 Conference number: 1st |
Conference
| Conference | 1st International Particle Accelerator Conference |
|---|---|
| Abbreviated title | IPAC'10 |
| Country | Japan |
| City | Kyoto |
| Period | 23/05/10 → 28/05/10 |
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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. Allan; MacLeod, Allan M.; van der Geer, S. B.; de Loos, M. J.
Proceedings of the first International Particle Accelerator Conference (IPAC’10), Kyoto, 23-28 May 2010. 2010. p. 1146-1148 MOPE072.Research output: Chapter in Book/Report/Conference proceeding › Conference 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. Allan
AU - MacLeod, Allan M.
AU - van der Geer, S. B.
AU - de Loos, M. J.
PY - 2010/6
Y1 - 2010/6
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 ± 1π 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 ± 1π 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.
M3 - Conference contribution
SN - 9789290833529
SP - 1146
EP - 1148
BT - Proceedings of the first International Particle Accelerator Conference (IPAC’10), Kyoto, 23-28 May 2010
ER -