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Title: Generation of Ramped Current Profiles in Relativistic Electron Beams Using Wakefields in Dielectric Structures

We show that temporal pulse tailoring of charged-particle beams is essential to optimize efficiency in collinear wakefield acceleration schemes. In this Letter, we demonstrate a novel phase space manipulation method that employs a beam wakefield interaction in a dielectric structure, followed by bunch compression in a permanent magnet chicane, to longitudinally tailor the pulse shape of an electron beam. This compact, passive, approach was used to generate a nearly linearly ramped current profile in a relativistic electron beam experiment carried out at the Brookhaven National Laboratory Accelerator Test Facility. Here, we report on these experimental results including beam and wakefield diagnostics and pulse profile reconstruction techniques.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [4] ;  [4] ;  [2]
  1. Univ. of California, Los Angeles, CA (United States). Department of Physics and Astronomy; RadiaBeam Technologies, Santa Monica, CA (United States)
  2. Univ. of California, Los Angeles, CA (United States). Department of Physics and Astronomy
  3. RadiaBeam Technologies, Santa Monica, CA (United States)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States). Accelerator Test Facility
Publication Date:
Report Number(s):
BNL-113852-2017-JA
Journal ID: ISSN 0031-9007; R&D Project: KBCH139; KB0202011
Grant/Contract Number:
SC0012704; SC0011271; SC0009914
Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 118; Journal Issue: 5; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS
OSTI Identifier:
1376088
Alternate Identifier(s):
OSTI ID: 1342618

Andonian, G., Barber, S., O’Shea, F. H., Fedurin, M., Kusche, K., Swinson, C., and Rosenzweig, J. B.. Generation of Ramped Current Profiles in Relativistic Electron Beams Using Wakefields in Dielectric Structures. United States: N. p., Web. doi:10.1103/PhysRevLett.118.054802.
Andonian, G., Barber, S., O’Shea, F. H., Fedurin, M., Kusche, K., Swinson, C., & Rosenzweig, J. B.. Generation of Ramped Current Profiles in Relativistic Electron Beams Using Wakefields in Dielectric Structures. United States. doi:10.1103/PhysRevLett.118.054802.
Andonian, G., Barber, S., O’Shea, F. H., Fedurin, M., Kusche, K., Swinson, C., and Rosenzweig, J. B.. 2017. "Generation of Ramped Current Profiles in Relativistic Electron Beams Using Wakefields in Dielectric Structures". United States. doi:10.1103/PhysRevLett.118.054802. https://www.osti.gov/servlets/purl/1376088.
@article{osti_1376088,
title = {Generation of Ramped Current Profiles in Relativistic Electron Beams Using Wakefields in Dielectric Structures},
author = {Andonian, G. and Barber, S. and O’Shea, F. H. and Fedurin, M. and Kusche, K. and Swinson, C. and Rosenzweig, J. B.},
abstractNote = {We show that temporal pulse tailoring of charged-particle beams is essential to optimize efficiency in collinear wakefield acceleration schemes. In this Letter, we demonstrate a novel phase space manipulation method that employs a beam wakefield interaction in a dielectric structure, followed by bunch compression in a permanent magnet chicane, to longitudinally tailor the pulse shape of an electron beam. This compact, passive, approach was used to generate a nearly linearly ramped current profile in a relativistic electron beam experiment carried out at the Brookhaven National Laboratory Accelerator Test Facility. Here, we report on these experimental results including beam and wakefield diagnostics and pulse profile reconstruction techniques.},
doi = {10.1103/PhysRevLett.118.054802},
journal = {Physical Review Letters},
number = 5,
volume = 118,
place = {United States},
year = {2017},
month = {2}
}