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Title: Suppression of Deflecting Forces in Planar-Symmetric Dielectric Wakefield Accelerating Structures with Elliptical Bunches

Abstract

Wakefield based accelerators capable of accelerating gradients two orders of magnitude higher than present accelerators offer a path to compact high energy physics instruments and light sources. However, for high gradient accelerators, beam instabilities driven by commensurately high transverse wakefields limit beam quality. It has been previously theoretically shown that transverse wakefields can be reduced by elliptically shaping the transverse sizes of beams in dielectric structures with planar symmetry. We report here experimental measurements that demonstrate reduced transverse wakefields for elliptical beams in planar symmetric structures which are consistent with theoretical models. Furthermore, these results may enable the design of gigavolt-per-meter gradient wakefield based accelerators that produce and stably accelerate high quality beams.

Authors:
ORCiD logo [1];  [2]; ORCiD logo [3];  [4];  [2];  [4];  [2];  [2];  [4];  [2]
  1. Univ. of California, Los Angeles, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
  2. Univ. of California, Los Angeles, CA (United States)
  3. Northern Illinois Univ., DeKalb, IL (United States)
  4. SLAC National Accelerator Lab., Menlo Park, CA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1600732
Alternate Identifier(s):
OSTI ID: 1604227
Grant/Contract Number:  
AC02-76SF00515; SC0009914
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 124; Journal Issue: 10; Related Information: This AM has not been assigned a DOI as of yet.https://journals.aps.org/prl/accepted/42076Yf9X6e1f96997b64f51a2243dbb0b3003291; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; beam instabilities; electromagnetic field calculations; electromagnetism; plasma acceleration & new acceleration techniques; particle accelerators

Citation Formats

O’Shea, Brendan D., Andonian, Gerard, Baturin, S. S., Clarke, Christine I., Hoang, P. D., Hogan, Mark J., Naranjo, Brian, Williams, Oliver B., Yakimenko, Vitaly, and Rosenzweig, James B. Suppression of Deflecting Forces in Planar-Symmetric Dielectric Wakefield Accelerating Structures with Elliptical Bunches. United States: N. p., 2020. Web. doi:10.1103/physrevlett.124.104801.
O’Shea, Brendan D., Andonian, Gerard, Baturin, S. S., Clarke, Christine I., Hoang, P. D., Hogan, Mark J., Naranjo, Brian, Williams, Oliver B., Yakimenko, Vitaly, & Rosenzweig, James B. Suppression of Deflecting Forces in Planar-Symmetric Dielectric Wakefield Accelerating Structures with Elliptical Bunches. United States. doi:https://doi.org/10.1103/physrevlett.124.104801
O’Shea, Brendan D., Andonian, Gerard, Baturin, S. S., Clarke, Christine I., Hoang, P. D., Hogan, Mark J., Naranjo, Brian, Williams, Oliver B., Yakimenko, Vitaly, and Rosenzweig, James B. Wed . "Suppression of Deflecting Forces in Planar-Symmetric Dielectric Wakefield Accelerating Structures with Elliptical Bunches". United States. doi:https://doi.org/10.1103/physrevlett.124.104801. https://www.osti.gov/servlets/purl/1600732.
@article{osti_1600732,
title = {Suppression of Deflecting Forces in Planar-Symmetric Dielectric Wakefield Accelerating Structures with Elliptical Bunches},
author = {O’Shea, Brendan D. and Andonian, Gerard and Baturin, S. S. and Clarke, Christine I. and Hoang, P. D. and Hogan, Mark J. and Naranjo, Brian and Williams, Oliver B. and Yakimenko, Vitaly and Rosenzweig, James B.},
abstractNote = {Wakefield based accelerators capable of accelerating gradients two orders of magnitude higher than present accelerators offer a path to compact high energy physics instruments and light sources. However, for high gradient accelerators, beam instabilities driven by commensurately high transverse wakefields limit beam quality. It has been previously theoretically shown that transverse wakefields can be reduced by elliptically shaping the transverse sizes of beams in dielectric structures with planar symmetry. We report here experimental measurements that demonstrate reduced transverse wakefields for elliptical beams in planar symmetric structures which are consistent with theoretical models. Furthermore, these results may enable the design of gigavolt-per-meter gradient wakefield based accelerators that produce and stably accelerate high quality beams.},
doi = {10.1103/physrevlett.124.104801},
journal = {Physical Review Letters},
number = 10,
volume = 124,
place = {United States},
year = {2020},
month = {3}
}

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