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Title: Transverse Space-Charge Field-Induced Plasma Dynamics for Ultraintense Electron-Beam Characterization

Abstract

Similarly to laser or X-ray beams, the interaction of sufficiently intense particle beams with neutral gases will result in the creation of plasma. In contrast to photon-based ionization, the strong unipolar field of a particle beam can generate a plasma where the electron population receives a large initial momentum kick and escapes, leaving behind unshielded ions. Measuring the properties of the ensuing Coulomb exploding ions-such as their kinetic energy distribution, yield, and spatial distribution-can provide information about the peak electric fields that are achieved in the electron beams. Particle-in-cell simulations and analytical models are presented for high-brightness electron beams of a few femtoseconds or even hundreds of attoseconds, and transverse beam sizes on the micron scale, as generated by today's free electron lasers. Different density regimes for the utilization as a potential diagnostics are also explored, and the fundamental differences in plasma dynamical behavior for e-beam or photon-based ionization are highlighted. By measuring the dynamics of field-induced ions for different gas and beam densities, a lower bound on the beam charge density can be obtained in a single shot and in a noninvasive way. The exponential dependency of the ionization yield on the beam properties can provide unprecedented spatial andmore » temporal resolution, at the submicrometer and subfemtosecond scales, respectively, offering a practical and powerful approach to characterizing beams from accelerators at the frontiers of performance.« less

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); European Union (EU); Swiss National Science Foundation (SNF)
OSTI Identifier:
1436831
Alternate Identifier(s):
OSTI ID: 1461145
Grant/Contract Number:  
AC02-05CH11231; 290605; 200020∶165686
Resource Type:
Published Article
Journal Name:
Physical Review. X
Additional Journal Information:
Journal Name: Physical Review. X Journal Volume: 8 Journal Issue: 2; Journal ID: ISSN 2160-3308
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; beam diagnostics; high intensity beam dynamics; accelerator applications; colliders; free-electron lasers; plasma diagnostic techniques

Citation Formats

Tarkeshian, R., Vay, J. L., Lehe, R., Schroeder, C. B., Esarey, E. H., Feurer, T., and Leemans, W. P. Transverse Space-Charge Field-Induced Plasma Dynamics for Ultraintense Electron-Beam Characterization. United States: N. p., 2018. Web. doi:10.1103/PhysRevX.8.021039.
Tarkeshian, R., Vay, J. L., Lehe, R., Schroeder, C. B., Esarey, E. H., Feurer, T., & Leemans, W. P. Transverse Space-Charge Field-Induced Plasma Dynamics for Ultraintense Electron-Beam Characterization. United States. doi:10.1103/PhysRevX.8.021039.
Tarkeshian, R., Vay, J. L., Lehe, R., Schroeder, C. B., Esarey, E. H., Feurer, T., and Leemans, W. P. Thu . "Transverse Space-Charge Field-Induced Plasma Dynamics for Ultraintense Electron-Beam Characterization". United States. doi:10.1103/PhysRevX.8.021039.
@article{osti_1436831,
title = {Transverse Space-Charge Field-Induced Plasma Dynamics for Ultraintense Electron-Beam Characterization},
author = {Tarkeshian, R. and Vay, J. L. and Lehe, R. and Schroeder, C. B. and Esarey, E. H. and Feurer, T. and Leemans, W. P.},
abstractNote = {Similarly to laser or X-ray beams, the interaction of sufficiently intense particle beams with neutral gases will result in the creation of plasma. In contrast to photon-based ionization, the strong unipolar field of a particle beam can generate a plasma where the electron population receives a large initial momentum kick and escapes, leaving behind unshielded ions. Measuring the properties of the ensuing Coulomb exploding ions-such as their kinetic energy distribution, yield, and spatial distribution-can provide information about the peak electric fields that are achieved in the electron beams. Particle-in-cell simulations and analytical models are presented for high-brightness electron beams of a few femtoseconds or even hundreds of attoseconds, and transverse beam sizes on the micron scale, as generated by today's free electron lasers. Different density regimes for the utilization as a potential diagnostics are also explored, and the fundamental differences in plasma dynamical behavior for e-beam or photon-based ionization are highlighted. By measuring the dynamics of field-induced ions for different gas and beam densities, a lower bound on the beam charge density can be obtained in a single shot and in a noninvasive way. The exponential dependency of the ionization yield on the beam properties can provide unprecedented spatial and temporal resolution, at the submicrometer and subfemtosecond scales, respectively, offering a practical and powerful approach to characterizing beams from accelerators at the frontiers of performance.},
doi = {10.1103/PhysRevX.8.021039},
journal = {Physical Review. X},
number = 2,
volume = 8,
place = {United States},
year = {2018},
month = {5}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevX.8.021039

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Cited by: 3 works
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    Works referencing / citing this record:

    Transverse Space-Charge Field-Induced Plasma Dynamics for Ultraintense Electron-Beam Characterization
    text, January 2018

    • Tarkeshian, Roxana; Vay, J. L.; Lehe, R.
    • Deutsches Elektronen-Synchrotron, DESY, Hamburg
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