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Title: Direct Measurement of Focusing Fields in Active Plasma Lenses

Abstract

Active plasma lenses have the potential to enable broad-ranging applications of plasma-based accelerators owing to their compact design and radially symmetric kT/m-level focusing fields, facilitating beam-quality preservation and compact beam transport. We report on the direct measurement of magnetic field gradients in active plasma lenses and demonstrate their impact on the emittance of a charged particle beam. This is made possible by the use of a well-characterized electron beam with 1.4mmmrad normalized emittance from a conventional accelerator. Field gradients of up to 823T/m are investigated. Here, the observed emittance evolution is supported by numerical simulations, which demonstrate the conservation of the core beam emittance in such a plasma lens setup.

Authors:
 [1];  [1];  [2];  [3];  [1];  [2];  [4];  [1];  [1];  [2];  [2];  [5];  [4];  [5];  [4];  [3];  [2];  [1];  [1];  [2]
  1. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  2. Univ. of California, Berkeley, CA (United States). Lawrence Berkeley National Lab.
  3. Keldysh Institute for Applied Mathematics, Moscow (Russia)
  4. Center for Free-Electron Laser Science and Dept. of Physics, Hamburg (Germany); Univ. of Hamburg, Hamburg (Germany)
  5. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Univ. Hamburg, Hamburg (Germany)
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)
OSTI Identifier:
1484963
Alternate Identifier(s):
OSTI ID: 1439244
Grant/Contract Number:  
AC02-05CH11231; VH-VI-503; ZT-0009
Resource Type:
Published Article
Journal Name:
Physical Review Accelerators and Beams
Additional Journal Information:
Journal Volume: 21; Journal Issue: 12; Journal ID: ISSN 2469-9888
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Rockemann, J.-H., Schaper, L., Barber, S. K., Bobrova, N. A., Boyle, G., Bulanov, S., Delbos, N., Floettmann, K., Kube, G., Lauth, W., Leemans, W. P., Libov, V., Maier, A., Meisel, M., Messner, P., Sasorov, P. V., van Tilborg, J., Wesch, S., Osterhoff, Jens, and Schroeder, C. B. Direct Measurement of Focusing Fields in Active Plasma Lenses. United States: N. p., 2018. Web. doi:10.1103/PhysRevAccelBeams.21.122801.
Rockemann, J.-H., Schaper, L., Barber, S. K., Bobrova, N. A., Boyle, G., Bulanov, S., Delbos, N., Floettmann, K., Kube, G., Lauth, W., Leemans, W. P., Libov, V., Maier, A., Meisel, M., Messner, P., Sasorov, P. V., van Tilborg, J., Wesch, S., Osterhoff, Jens, & Schroeder, C. B. Direct Measurement of Focusing Fields in Active Plasma Lenses. United States. doi:10.1103/PhysRevAccelBeams.21.122801.
Rockemann, J.-H., Schaper, L., Barber, S. K., Bobrova, N. A., Boyle, G., Bulanov, S., Delbos, N., Floettmann, K., Kube, G., Lauth, W., Leemans, W. P., Libov, V., Maier, A., Meisel, M., Messner, P., Sasorov, P. V., van Tilborg, J., Wesch, S., Osterhoff, Jens, and Schroeder, C. B. Fri . "Direct Measurement of Focusing Fields in Active Plasma Lenses". United States. doi:10.1103/PhysRevAccelBeams.21.122801.
@article{osti_1484963,
title = {Direct Measurement of Focusing Fields in Active Plasma Lenses},
author = {Rockemann, J.-H. and Schaper, L. and Barber, S. K. and Bobrova, N. A. and Boyle, G. and Bulanov, S. and Delbos, N. and Floettmann, K. and Kube, G. and Lauth, W. and Leemans, W. P. and Libov, V. and Maier, A. and Meisel, M. and Messner, P. and Sasorov, P. V. and van Tilborg, J. and Wesch, S. and Osterhoff, Jens and Schroeder, C. B.},
abstractNote = {Active plasma lenses have the potential to enable broad-ranging applications of plasma-based accelerators owing to their compact design and radially symmetric kT/m-level focusing fields, facilitating beam-quality preservation and compact beam transport. We report on the direct measurement of magnetic field gradients in active plasma lenses and demonstrate their impact on the emittance of a charged particle beam. This is made possible by the use of a well-characterized electron beam with 1.4mmmrad normalized emittance from a conventional accelerator. Field gradients of up to 823T/m are investigated. Here, the observed emittance evolution is supported by numerical simulations, which demonstrate the conservation of the core beam emittance in such a plasma lens setup.},
doi = {10.1103/PhysRevAccelBeams.21.122801},
journal = {Physical Review Accelerators and Beams},
number = 12,
volume = 21,
place = {United States},
year = {2018},
month = {12}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevAccelBeams.21.122801

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Cited by: 2 works
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Figures / Tables:

Figure 1 Figure 1: MHD simulation results for a $R$ = 0.5mm gas column with $I$0 = 364A. The $J$ ∼ $T$ 3/2-model is of the form of Eq. (7).

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