An application of laser-plasma acceleration: towards a free-electron laser amplification
The laser-plasma accelerator (LPA) presently provides electron beams with a typical current of a few kA, a bunch length of a few fs, energy in the few hundred MeV to several GeV range, a divergence of typically 1 mrad, an energy spread of the order of 1%, and a normalized emittance of the order of π...
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| Veröffentlicht in: | Plasma physics and controlled fusion 2016-03, Vol.58 (3), p.34020 |
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| creator | Couprie, M E Labat, M Evain, C Marteau, F Briquez, F Khojoyan, M Benabderrahmane, C Chapuis, L Hubert, N Bourassin-Bouchet, C El Ajjouri, M Bouvet, F Dietrich, Y Valléau, M Sharma, G Yang, W Marcouillé, O Vétéran, J Berteaud, P El Ajjouri, T Cassinari, L Thaury, C Lambert, G Andriyash, I Malka, V Davoine, X Tordeux, M A Miron, C Zerbib, D Tavakoli, K Marlats, J L Tilmont, M Rommeluère, P Duval, J P N'Guyen, M H Rouqier, A Vanderbergue, M Herbeaux, C Sebdouai, M Lestrade, A Leclercq, N Dennetière, D Thomasset, M Polack, F Bielawski, S Szwaj, C Loulergue, A |
| description | The laser-plasma accelerator (LPA) presently provides electron beams with a typical current of a few kA, a bunch length of a few fs, energy in the few hundred MeV to several GeV range, a divergence of typically 1 mrad, an energy spread of the order of 1%, and a normalized emittance of the order of π.mm.mrad. One of the first applications could be to use these beams for the production of radiation: undulator emission has been observed but the rather large energy spread (1%) and divergence (1 mrad) prevent straightforward free-electron laser (FEL) amplification. An adequate beam manipulation through the transport to the undulator is then required. The key concept proposed here relies on an innovative electron beam longitudinal and transverse manipulation in the transport towards an undulator: a 'demixing' chicane sorts the electrons according to their energy and reduces the spread from 1% to one slice of a few ‰ and the effective transverse size is maintained constant along the undulator (supermatching) by a proper synchronization of the electron beam focusing with the progress of the optical wave. A test experiment for the demonstration of FEL amplification with an LPA is under preparation. Electron beam transport follows different steps with strong focusing with permanent magnet quadrupoles of variable strength, a demixing chicane with conventional dipoles, and a second set of quadrupoles for further focusing in the undulator. The FEL simulations and the progress of the preparation of the experiment are presented. |
| doi_str_mv | 10.1088/0741-3335/58/3/034020 |
| format | Article |
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One of the first applications could be to use these beams for the production of radiation: undulator emission has been observed but the rather large energy spread (1%) and divergence (1 mrad) prevent straightforward free-electron laser (FEL) amplification. An adequate beam manipulation through the transport to the undulator is then required. The key concept proposed here relies on an innovative electron beam longitudinal and transverse manipulation in the transport towards an undulator: a 'demixing' chicane sorts the electrons according to their energy and reduces the spread from 1% to one slice of a few ‰ and the effective transverse size is maintained constant along the undulator (supermatching) by a proper synchronization of the electron beam focusing with the progress of the optical wave. A test experiment for the demonstration of FEL amplification with an LPA is under preparation. Electron beam transport follows different steps with strong focusing with permanent magnet quadrupoles of variable strength, a demixing chicane with conventional dipoles, and a second set of quadrupoles for further focusing in the undulator. 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The FEL simulations and the progress of the preparation of the experiment are presented.</description><subject>Accelerator Physics</subject><subject>Amplification</subject><subject>Beams (radiation)</subject><subject>Demixing</subject><subject>Electron beams</subject><subject>Focusing</subject><subject>Free electron lasers</subject><subject>free-electron laser</subject><subject>laser-plasma 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| fulltext | fulltext |
| identifier | ISSN: 0741-3335 |
| ispartof | Plasma physics and controlled fusion, 2016-03, Vol.58 (3), p.34020 |
| issn | 0741-3335 1361-6587 |
| language | eng |
| recordid | cdi_hal_primary_oai_HAL_hal_01342476v1 |
| source | Institute of Physics Journals |
| subjects | Accelerator Physics Amplification Beams (radiation) Demixing Electron beams Focusing Free electron lasers free-electron laser laser-plasma accelerator Physics Quadrupoles Transport undulator |
| title | An application of laser-plasma acceleration: towards a free-electron laser amplification |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-07T22%3A53%3A36IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_hal_p&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=An%20application%20of%20laser-plasma%20acceleration:%20towards%20a%20free-electron%20laser%20amplification&rft.jtitle=Plasma%20physics%20and%20controlled%20fusion&rft.au=Couprie,%20M%20E&rft.date=2016-03-01&rft.volume=58&rft.issue=3&rft.spage=34020&rft.pages=34020-&rft.issn=0741-3335&rft.eissn=1361-6587&rft.coden=PLPHBZ&rft_id=info:doi/10.1088/0741-3335/58/3/034020&rft_dat=%3Cproquest_hal_p%3E1800469611%3C/proquest_hal_p%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=1800469611&rft_id=info:pmid/&rfr_iscdi=true |