Please use this identifier to cite or link to this item:
http://hdl.handle.net/10071/9979
Author(s): | Kneip, S. McGuffey, C. Martins, J. L. Bloom, M. S. Chvykov, V. V. Dollar, F. J. Fonseca, R. A. Jolly, S. W. Kalintchenko, G. A. Krushelnick, K. Maksimchuk, A. M. Mangles, S. P. D. Najmudin, Z. Palmer, C. A. J. Ta Phuoc, K. Schumaker, W. Silva, L. O. Vieira, J. Yanovsky, V. P. Thomas, A. G. R. |
Date: | 2012 |
Title: | Characterization of transverse beam emittance of electrons from a laser-plasma wakefield accelerator in the bubble regime using betatron x-ray radiation |
Volume: | 15 |
Number: | 2 |
Pages: | 21302 |
ISSN: | 1098-4402 |
Abstract: | We propose and use a technique to measure the transverse emittance of a laser-wakefield accelerated beam of relativistic electrons. The technique is based on the simultaneous measurements of the electron beam divergence given by v(perpendicular to)/v(parallel to), the measured spectrum gamma, and the transverse electron bunch size in the bubble r(perpendicular to). The latter is obtained via the measurement of the source size of the x rays emitted by the accelerating electron bunch in the bubble. We measure a normalized rms beam transverse emittance < 0.5 pi mm mrad as an upper limit for a spatially Gaussian, spectrally quasimonoenergetic electron beam with 230 MeV energy in agreement with numerical modeling and analytic theory in the bubble regime. |
Peerreviewed: | Sim |
Access type: | Open Access |
Appears in Collections: | CTI-RI - Artigos em revistas científicas internacionais com arbitragem científica |
Files in This Item:
File | Description | Size | Format | |
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publisher_version_PhysRevSTAB_15_021302.pdf | 652,13 kB | Adobe PDF | View/Open |
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