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Title: Near-Ideal Dechirper for Plasma-Based Electron and Positron Acceleration Using a Hollow Channel Plasma

Abstract

Plasma-based electron or positron wakefield acceleration has made great strides in the past decade. Currently, one major challenge for its applications to coherent light sources and colliders is the relatively large energy spread (few-percent level) of the accelerated beams. This energy spread is usually dominated by a longitudinally correlated energy chirp induced by the wakefield. It is highly desirable to have a systematic method for reducing this spread to ≲ 0.1% and, at the same time, maintaining the beam emittance. Here, a near-ideal dechirper based on a low-density hollow channel plasma is proposed and tested through large-scale three-dimensional particle-in-cell simulations. Here, the theoretical analyses and simulations confirm that the positively correlated energy spread (chirp) of the electron or positron beam from a plasma accelerator can be significantly reduced by its self-wake in the hollow plasma channel from a few percent down to ≲ 0.1% without noticeable beam emittance growth. Such a near-ideal dechirper may significantly improve the beam quality of plasma-based accelerators; thus paving the way for their applications to future compact free-electron lasers and colliders.

Authors:
ORCiD logo [1]; ORCiD logo [1];  [1];  [2]; ORCiD logo [1];  [1];  [1];  [1];  [1];  [1];  [3]; ORCiD logo [4]; ORCiD logo [4];  [4];  [1];  [4]; ORCiD logo [4]
  1. Tsinghua Univ., Beijing (China)
  2. Beijing Normal Univ., Beijing (China)
  3. SLAC National Accelerator Lab., Stanford, CA (United States)
  4. Univ. of California, Los Angeles, CA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1594960
Grant/Contract Number:  
AC02-76SF00515; 11535006; 11425521; 11775125; 11875175; SC0010064; SC0008491; SC0008316
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Applied
Additional Journal Information:
Journal Volume: 12; Journal Issue: 6; Journal ID: ISSN 2331-7019
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Wu, Y. P., Hua, J. F., Pai, C. -H., An, W., Zhou, Z., Zhang, J., Liu, S., Peng, B., Fang, Y., Zhou, S. Y., Xu, X. L., Zhang, C. J., Li, F., Nie, Z., Lu, W., Mori, W. B., and Joshi, C. Near-Ideal Dechirper for Plasma-Based Electron and Positron Acceleration Using a Hollow Channel Plasma. United States: N. p., 2019. Web. doi:10.1103/PhysRevApplied.12.064011.
Wu, Y. P., Hua, J. F., Pai, C. -H., An, W., Zhou, Z., Zhang, J., Liu, S., Peng, B., Fang, Y., Zhou, S. Y., Xu, X. L., Zhang, C. J., Li, F., Nie, Z., Lu, W., Mori, W. B., & Joshi, C. Near-Ideal Dechirper for Plasma-Based Electron and Positron Acceleration Using a Hollow Channel Plasma. United States. doi:10.1103/PhysRevApplied.12.064011.
Wu, Y. P., Hua, J. F., Pai, C. -H., An, W., Zhou, Z., Zhang, J., Liu, S., Peng, B., Fang, Y., Zhou, S. Y., Xu, X. L., Zhang, C. J., Li, F., Nie, Z., Lu, W., Mori, W. B., and Joshi, C. Wed . "Near-Ideal Dechirper for Plasma-Based Electron and Positron Acceleration Using a Hollow Channel Plasma". United States. doi:10.1103/PhysRevApplied.12.064011.
@article{osti_1594960,
title = {Near-Ideal Dechirper for Plasma-Based Electron and Positron Acceleration Using a Hollow Channel Plasma},
author = {Wu, Y. P. and Hua, J. F. and Pai, C. -H. and An, W. and Zhou, Z. and Zhang, J. and Liu, S. and Peng, B. and Fang, Y. and Zhou, S. Y. and Xu, X. L. and Zhang, C. J. and Li, F. and Nie, Z. and Lu, W. and Mori, W. B. and Joshi, C.},
abstractNote = {Plasma-based electron or positron wakefield acceleration has made great strides in the past decade. Currently, one major challenge for its applications to coherent light sources and colliders is the relatively large energy spread (few-percent level) of the accelerated beams. This energy spread is usually dominated by a longitudinally correlated energy chirp induced by the wakefield. It is highly desirable to have a systematic method for reducing this spread to ≲ 0.1% and, at the same time, maintaining the beam emittance. Here, a near-ideal dechirper based on a low-density hollow channel plasma is proposed and tested through large-scale three-dimensional particle-in-cell simulations. Here, the theoretical analyses and simulations confirm that the positively correlated energy spread (chirp) of the electron or positron beam from a plasma accelerator can be significantly reduced by its self-wake in the hollow plasma channel from a few percent down to ≲ 0.1% without noticeable beam emittance growth. Such a near-ideal dechirper may significantly improve the beam quality of plasma-based accelerators; thus paving the way for their applications to future compact free-electron lasers and colliders.},
doi = {10.1103/PhysRevApplied.12.064011},
journal = {Physical Review Applied},
number = 6,
volume = 12,
place = {United States},
year = {2019},
month = {12}
}

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