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Title: Laser-heated capillary discharge waveguides as tunable structures for laser-plasma acceleration

Abstract

Laser-heated capillary discharge waveguides are novel, low plasma density guiding structures able to guide intense laser pulses over many diffraction lengths and have recently enabled the acceleration of electrons to 7.8 GeV by using a laser-plasma accelerator (LPA). These devices represent an improvement over conventional capillary discharge waveguides, as the channel matched spot size and plasma density can be tuned independently of the capillary radius. This has allowed the guiding of petawatt-scale pulses focused to small spot sizes within large diameter capillaries, preventing laser damage of the capillary structure. High performance channel-guided LPAs require control of matched spot size and density, which experiments and simulations reported here show can be tuned over a wide range via initial discharge and laser parameters. In this paper, measurements of the matched spot size and plasma density in laser-heated capillary discharges are presented, which are found to be in excellent agreement with simulations performed using the MHD code MARPLE. Strategies for optimizing accelerator performance are identified based on these results.

Authors:
ORCiD logo [1]; ORCiD logo [2];  [2]; ORCiD logo [2];  [2]; ORCiD logo [2]; ORCiD logo [1]; ORCiD logo [2];  [3];  [3]; ORCiD logo [3];  [4]; ORCiD logo [5]; ORCiD logo [2]; ORCiD logo [1]; ORCiD logo [2];  [2]
+ Show Author Affiliations
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. Russian Academy of Sciences (RAS), Moscow (Russia). Keldysh Institute of Applied Mathematics
  4. Institute of Physics ASCR, v.v.i. (FZU), Prague (Czech Republic)
  5. Russian Academy of Sciences (RAS), Moscow (Russia). Keldysh Institute of Applied Mathematics; Institute of Physics ASCR, v.v.i. (FZU), Prague (Czech Republic)
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF); European Regional Development Fund (ERDF); Russian Foundation for Basic Research (RFBR)
OSTI Identifier:
1782178
Alternate Identifier(s):
OSTI ID: 1657283
Grant/Contract Number:  
AC02-05CH11231; FG02-12ER41798; PHY-1415596; PHY-1632796
Resource Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 27; Journal Issue: 9; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; Density measurement; Plasma dynamics; Plasma temperature; Plasma acceleration; Plasma properties and parameters; Interferometry; Laser applications; Laser plasma interactions; Bremsstrahlung

Citation Formats

Pieronek, C. V., Gonsalves, A. J., Benedetti, C., Bulanov, S. S., van Tilborg, J., Bin, J. H., Swanson, K. K., Daniels, J., Bagdasarov, G. A., Bobrova, N. A., Gasilov, V. A., Korn, G., Sasorov, P. V., Geddes, C. G. R., Schroeder, C. B., Leemans, W. P., and Esarey, E. Laser-heated capillary discharge waveguides as tunable structures for laser-plasma acceleration. United States: N. p., 2020. Web. doi:10.1063/5.0014961.
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Pieronek, C. V., Gonsalves, A. J., Benedetti, C., Bulanov, S. S., van Tilborg, J., Bin, J. H., Swanson, K. K., Daniels, J., Bagdasarov, G. A., Bobrova, N. A., Gasilov, V. A., Korn, G., Sasorov, P. V., Geddes, C. G. R., Schroeder, C. B., Leemans, W. P., & Esarey, E. Laser-heated capillary discharge waveguides as tunable structures for laser-plasma acceleration. United States. https://doi.org/10.1063/5.0014961
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Pieronek, C. V., Gonsalves, A. J., Benedetti, C., Bulanov, S. S., van Tilborg, J., Bin, J. H., Swanson, K. K., Daniels, J., Bagdasarov, G. A., Bobrova, N. A., Gasilov, V. A., Korn, G., Sasorov, P. V., Geddes, C. G. R., Schroeder, C. B., Leemans, W. P., and Esarey, E. Tue . "Laser-heated capillary discharge waveguides as tunable structures for laser-plasma acceleration". United States. https://doi.org/10.1063/5.0014961. https://www.osti.gov/servlets/purl/1782178.
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@article{osti_1782178,
title = {Laser-heated capillary discharge waveguides as tunable structures for laser-plasma acceleration},
author = {Pieronek, C. V. and Gonsalves, A. J. and Benedetti, C. and Bulanov, S. S. and van Tilborg, J. and Bin, J. H. and Swanson, K. K. and Daniels, J. and Bagdasarov, G. A. and Bobrova, N. A. and Gasilov, V. A. and Korn, G. and Sasorov, P. V. and Geddes, C. G. R. and Schroeder, C. B. and Leemans, W. P. and Esarey, E.},
abstractNote = {Laser-heated capillary discharge waveguides are novel, low plasma density guiding structures able to guide intense laser pulses over many diffraction lengths and have recently enabled the acceleration of electrons to 7.8 GeV by using a laser-plasma accelerator (LPA). These devices represent an improvement over conventional capillary discharge waveguides, as the channel matched spot size and plasma density can be tuned independently of the capillary radius. This has allowed the guiding of petawatt-scale pulses focused to small spot sizes within large diameter capillaries, preventing laser damage of the capillary structure. High performance channel-guided LPAs require control of matched spot size and density, which experiments and simulations reported here show can be tuned over a wide range via initial discharge and laser parameters. In this paper, measurements of the matched spot size and plasma density in laser-heated capillary discharges are presented, which are found to be in excellent agreement with simulations performed using the MHD code MARPLE. Strategies for optimizing accelerator performance are identified based on these results.},
doi = {10.1063/5.0014961},
journal = {Physics of Plasmas},
number = 9,
volume = 27,
place = {United States},
year = {Tue Sep 01 00:00:00 EDT 2020},
month = {Tue Sep 01 00:00:00 EDT 2020}
}
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Journal Article:
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Publisher's Version of Record
https://doi.org/10.1063/5.0014961
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