Emittance preserving thin film plasma mirrors for GeV scale laser plasma accelerators

Laser-plasma accelerators (LPAs) now routinely produce electron beams with GeV energies over acceleration lengths on the order of a few centimeters. This capability and the demonstration of multistage coupling make LPAs promising for numerous applications. However, beam quality preservation in multi...

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Autores principales:	A. Zingale, N. Czapla, D. M. Nasir, S. K. Barber, J. H. Bin, A. J. Gonsalves, F. Isono, J. van Tilborg, S. Steinke, K. Nakamura, G. E. Cochran, J. Purcell, W. P. Leemans, C. G. R. Geddes, C. B. Schroeder, E. Esarey, D. W. Schumacher
Formato:	article
Lenguaje:	EN
Publicado:	American Physical Society 2021
Materias:	Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
Acceso en línea:	https://doaj.org/article/3ca8f70a5a3f4397bc46e6b1975a1432
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spelling	oai:doaj.org-article:3ca8f70a5a3f4397bc46e6b1975a14322021-12-02T16:41:15ZEmittance preserving thin film plasma mirrors for GeV scale laser plasma accelerators10.1103/PhysRevAccelBeams.24.1213012469-9888https://doaj.org/article/3ca8f70a5a3f4397bc46e6b1975a14322021-12-01T00:00:00Zhttp://doi.org/10.1103/PhysRevAccelBeams.24.121301http://doi.org/10.1103/PhysRevAccelBeams.24.121301https://doaj.org/toc/2469-9888Laser-plasma accelerators (LPAs) now routinely produce electron beams with GeV energies over acceleration lengths on the order of a few centimeters. This capability and the demonstration of multistage coupling make LPAs promising for numerous applications. However, beam quality preservation in multistage accelerators remains an obstacle because of the need to separate the laser pulse from the electron beam. Plasma mirrors can be used to redirect the laser pulse, but their substrate thickness threatens to substantially degrade the electron beam emittance. Ultrathin (∼20 nm) liquid crystal (LC) plasma mirrors are an excellent candidate to address this challenge. This work investigates the robustness of thin LC plasma mirrors in the presence of capillary discharge plasma and an auxiliary heater laser. We find they can be operated ∼10 cm from the capillary exit when a heater laser is used. We then performed a normalized emittance measurement enabled using a 20 nm LC plasma mirror to protect electron beam optics after the LPA. The emittance contribution from scattering through the plasma mirror is calculated to be of order 100 nm, much less than the measured emittance of 4.0 μm. Finally, we develop a model to calculate plasma mirror performance based on the laser polarization and intensity, and plasma mirror thickness.A. ZingaleN. CzaplaD. M. NasirS. K. BarberJ. H. BinA. J. GonsalvesF. IsonoJ. van TilborgS. SteinkeK. NakamuraG. E. CochranJ. PurcellW. P. LeemansC. G. R. GeddesC. B. SchroederE. EsareyD. W. SchumacherAmerican Physical SocietyarticleNuclear and particle physics. Atomic energy. RadioactivityQC770-798ENPhysical Review Accelerators and Beams, Vol 24, Iss 12, p 121301 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
spellingShingle	Nuclear and particle physics. Atomic energy. Radioactivity QC770-798 A. Zingale N. Czapla D. M. Nasir S. K. Barber J. H. Bin A. J. Gonsalves F. Isono J. van Tilborg S. Steinke K. Nakamura G. E. Cochran J. Purcell W. P. Leemans C. G. R. Geddes C. B. Schroeder E. Esarey D. W. Schumacher Emittance preserving thin film plasma mirrors for GeV scale laser plasma accelerators
description	Laser-plasma accelerators (LPAs) now routinely produce electron beams with GeV energies over acceleration lengths on the order of a few centimeters. This capability and the demonstration of multistage coupling make LPAs promising for numerous applications. However, beam quality preservation in multistage accelerators remains an obstacle because of the need to separate the laser pulse from the electron beam. Plasma mirrors can be used to redirect the laser pulse, but their substrate thickness threatens to substantially degrade the electron beam emittance. Ultrathin (∼20 nm) liquid crystal (LC) plasma mirrors are an excellent candidate to address this challenge. This work investigates the robustness of thin LC plasma mirrors in the presence of capillary discharge plasma and an auxiliary heater laser. We find they can be operated ∼10 cm from the capillary exit when a heater laser is used. We then performed a normalized emittance measurement enabled using a 20 nm LC plasma mirror to protect electron beam optics after the LPA. The emittance contribution from scattering through the plasma mirror is calculated to be of order 100 nm, much less than the measured emittance of 4.0 μm. Finally, we develop a model to calculate plasma mirror performance based on the laser polarization and intensity, and plasma mirror thickness.
format	article
author	A. Zingale N. Czapla D. M. Nasir S. K. Barber J. H. Bin A. J. Gonsalves F. Isono J. van Tilborg S. Steinke K. Nakamura G. E. Cochran J. Purcell W. P. Leemans C. G. R. Geddes C. B. Schroeder E. Esarey D. W. Schumacher
author_facet	A. Zingale N. Czapla D. M. Nasir S. K. Barber J. H. Bin A. J. Gonsalves F. Isono J. van Tilborg S. Steinke K. Nakamura G. E. Cochran J. Purcell W. P. Leemans C. G. R. Geddes C. B. Schroeder E. Esarey D. W. Schumacher
author_sort	A. Zingale
title	Emittance preserving thin film plasma mirrors for GeV scale laser plasma accelerators
title_short	Emittance preserving thin film plasma mirrors for GeV scale laser plasma accelerators
title_full	Emittance preserving thin film plasma mirrors for GeV scale laser plasma accelerators
title_fullStr	Emittance preserving thin film plasma mirrors for GeV scale laser plasma accelerators
title_full_unstemmed	Emittance preserving thin film plasma mirrors for GeV scale laser plasma accelerators
title_sort	emittance preserving thin film plasma mirrors for gev scale laser plasma accelerators
publisher	American Physical Society
publishDate	2021
url	https://doaj.org/article/3ca8f70a5a3f4397bc46e6b1975a1432
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Emittance preserving thin film plasma mirrors for GeV scale laser plasma accelerators

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