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Title: Long-range attraction of an ultrarelativistic electron beam by a column of neutral plasma

Here, we report on the experimental observation of the attraction of a beam of ultrarelativistic electrons towards a column of neutral plasma. In experiments performed at the FACET test facility at SLAC we observe that an electron beam moving parallel to a neutral plasma column, at an initial distance of many plasma column radii, is attracted into the column. Once the beam enters the plasma it drives a plasma wake similar to that of an electron beam entering the plasma column head-on. A simple analytical model is developed in order to capture the essential physics of the attractive force. The attraction is further studied by 3D particle-in-cell numerical simulations. The results are an important step towards better understanding of particle beam–plasma interactions in general and plasma wakefield accelerator technology in particular.
Authors:
 [1] ;  [1] ;  [2] ;  [2] ;  [2] ;  [2] ; ORCiD logo [2] ;  [2] ;  [2] ;  [2] ;  [2] ; ORCiD logo [3] ;  [3] ;  [3] ;  [3] ;  [3] ;  [3] ;  [4] ;  [5]
  1. Univ. of Oslo, Oslo (Norway)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  3. Univ. of California, Los Angeles, CA (United States)
  4. Univ. Paris-Saclay, Palaiseau (France)
  5. Tsinghua Univ., Beijing (People's Republic of China)
Publication Date:
Grant/Contract Number:
PHY-1415386; 217 AC02-76SF00515; SC0010064
Type:
Published Article
Journal Name:
New Journal of Physics
Additional Journal Information:
Journal Volume: 18; Journal Issue: 10; Journal ID: ISSN 1367-2630
Publisher:
IOP Publishing
Research Org:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; electron beams; plasma physics; plasma wakefield acceleration; transverse beam dynamics; FACET user facility
OSTI Identifier:
1328717
Alternate Identifier(s):
OSTI ID: 1328718; OSTI ID: 1369472

Adli, Erik, Lindstrom, C. A., Allen, J., Clarke, C. I., Frederico, J., Gessner, S. J., Green, S. Z., Hogan, M. J., Litos, M. D., O’Shea, B., Yakimenko, V., An, W., Clayton, C. E., Marsh, K. A., Mori, W. B., Joshi, C., Vafaei-Najafabadi, N., Corde, S., and Lu, W.. Long-range attraction of an ultrarelativistic electron beam by a column of neutral plasma. United States: N. p., Web. doi:10.1088/1367-2630/18/10/103013.
Adli, Erik, Lindstrom, C. A., Allen, J., Clarke, C. I., Frederico, J., Gessner, S. J., Green, S. Z., Hogan, M. J., Litos, M. D., O’Shea, B., Yakimenko, V., An, W., Clayton, C. E., Marsh, K. A., Mori, W. B., Joshi, C., Vafaei-Najafabadi, N., Corde, S., & Lu, W.. Long-range attraction of an ultrarelativistic electron beam by a column of neutral plasma. United States. doi:10.1088/1367-2630/18/10/103013.
Adli, Erik, Lindstrom, C. A., Allen, J., Clarke, C. I., Frederico, J., Gessner, S. J., Green, S. Z., Hogan, M. J., Litos, M. D., O’Shea, B., Yakimenko, V., An, W., Clayton, C. E., Marsh, K. A., Mori, W. B., Joshi, C., Vafaei-Najafabadi, N., Corde, S., and Lu, W.. 2016. "Long-range attraction of an ultrarelativistic electron beam by a column of neutral plasma". United States. doi:10.1088/1367-2630/18/10/103013.
@article{osti_1328717,
title = {Long-range attraction of an ultrarelativistic electron beam by a column of neutral plasma},
author = {Adli, Erik and Lindstrom, C. A. and Allen, J. and Clarke, C. I. and Frederico, J. and Gessner, S. J. and Green, S. Z. and Hogan, M. J. and Litos, M. D. and O’Shea, B. and Yakimenko, V. and An, W. and Clayton, C. E. and Marsh, K. A. and Mori, W. B. and Joshi, C. and Vafaei-Najafabadi, N. and Corde, S. and Lu, W.},
abstractNote = {Here, we report on the experimental observation of the attraction of a beam of ultrarelativistic electrons towards a column of neutral plasma. In experiments performed at the FACET test facility at SLAC we observe that an electron beam moving parallel to a neutral plasma column, at an initial distance of many plasma column radii, is attracted into the column. Once the beam enters the plasma it drives a plasma wake similar to that of an electron beam entering the plasma column head-on. A simple analytical model is developed in order to capture the essential physics of the attractive force. The attraction is further studied by 3D particle-in-cell numerical simulations. The results are an important step towards better understanding of particle beam–plasma interactions in general and plasma wakefield accelerator technology in particular.},
doi = {10.1088/1367-2630/18/10/103013},
journal = {New Journal of Physics},
number = 10,
volume = 18,
place = {United States},
year = {2016},
month = {10}
}