Skew Quadrupole Effect of Laser Plasma Electron Beam Transport
| Autor: | Jean-Philippe Goddet, Amin Ghaith, Driss Oumbarek Espinos, Alexandre Loulergue, Charles Kitegi, Fabrice Marteau, Amar Tafzi, Olena Kononenko, Marie Labat, Thomas André, Victor Malka, Marie-Emmanuelle Couprie, Guillaume Lambert, Cédric Thaury, Mathieu Valléau, Alain Lestrade, Sebastien Corde, Mourad Sebdaoui, Frederic Blache, Eléonore Roussel |
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| Přispěvatelé: | Synchrotron SOLEIL (SSOLEIL), Centre National de la Recherche Scientifique (CNRS), Département d'Économie de l'École Polytechnique (X-DEP-ECO), École polytechnique (X), Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 (PhLAM), Université de Lille-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2019 |
| Předmět: |
Brightness
multipolar terms free electron laser Electron lcsh:Technology 01 natural sciences law.invention lcsh:Chemistry Optics law 0103 physical sciences quadrupole General Materials Science 010306 general physics lcsh:QH301-705.5 Instrumentation laser plasma acceleration Fluid Flow and Transfer Processes Physics [PHYS.PHYS]Physics [physics]/Physics [physics] lcsh:T 010308 nuclear & particles physics business.industry Process Chemistry and Technology General Engineering Skew Free-electron laser Laser Plasma acceleration lcsh:QC1-999 Computer Science Applications lcsh:Biology (General) lcsh:QD1-999 lcsh:TA1-2040 magnetism Physics::Accelerator Physics electron beam transport lcsh:Engineering (General). Civil engineering (General) business lcsh:Physics Beam (structure) Beam divergence |
| Zdroj: | Applied Sciences Applied Sciences, MDPI, 2019, 9 (12), pp.2447. ⟨10.3390/app9122447⟩ Volume 9 Issue 12 Applied Sciences, 2019, 9 (12), pp.2447. ⟨10.3390/app9122447⟩ Applied Sciences, Vol 9, Iss 12, p 2447 (2019) |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app9122447 |
| Popis: | International audience; Laser plasma acceleration (LPA) capable of providing femtosecond and GeV electron beams in cm scale distances brings a high interest for different applications, such as free electron laser and future colliders. Nevertheless, LPA high divergence and energy spread require an initial strong focus to mitigate the chromatic effects. The reliability, in particular with the pointing fluctuations, sets a real challenge for the control of the dispersion along the electron beam transport. We examine here how the magnetic defects of the first strong quadrupoles, in particular, the skew terms, can affect the brightness of the transported electron beam, in the case of the COXINEL transport line, designed for manipulating the electron beam properties for a free electron laser application. We also show that the higher the initial beam divergence, the larger the degradation. Experimentally, after having implemented a beam pointing alignment compensation method enabling us to adjust the position and dispersion independently, we demonstrate that the presence of non-negligible skew quadrupolar components induces a transversal spread and tilt of the beam, leading to an emittance growth and brightness reduction. We are able to reproduce the measurements with beam transport simulations using the measured electron beam parameters. |
| Databáze: | OpenAIRE |
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