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Title: Preservation of Ultra Low Emittances Using Adiabatic Matching in Future Plasma Wakefield-based Colliders

Abstract

The Plasma Wakefield Accelerator is a promising technique to lower the cost of the future high energy colliders by offering orders of magnitude higher gradients than the conventional accelerators. It has been shown that ion motion is an important issue to account for in the extreme regime of ultra high energies and ultra low emittances, characteristics of future high energy collider beams. In this regime, the transverse electric field of the beam is so high that in simulations, the plasma ions cannot be considered immobile at the time scale of electron plasma oscillation, thereby leading to a nonlinear focusing force. Therefore, the transverse emittance of a beam will not be preserved under these circumstances. However, we show that matched profile in case of a nonlinear focusing force still exists and can be derived from Vlasov equation. Furthermore, we introduce a plasma section that can reduce the emittance growth by adiabatically reducing the ion mass and hence increasing the nonlinear term in the focusing force. Simulation results are presented.

Authors:
;  [1];  [2];  [3]
  1. University of Southern California (Los Angeles, CA-90089) (United States)
  2. Duke University (Durham, NC-27708) (United States)
  3. University of California Los Angeles(Los Angeles, CA-90095) (United States)
Publication Date:
OSTI Identifier:
21255282
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1086; Journal Issue: 1; Conference: 13. advanced accelerator concepts workshop, Santa Cruz, CA (United States), 27 Jul - 2 Aug 2008; Other Information: DOI: 10.1063/1.3080971; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 43 PARTICLE ACCELERATORS; BOLTZMANN-VLASOV EQUATION; ELECTRIC FIELDS; ELECTRONS; FOCUSING; LINEAR COLLIDERS; NONLINEAR PROBLEMS; PLASMA; PLASMA WAVES; SIMULATION; WAKEFIELD ACCELERATORS; WAVEGUIDES

Citation Formats

Gholizadeh, Reza, Muggli, Patric, Katsouleas, Tom, and Mori, Warren. Preservation of Ultra Low Emittances Using Adiabatic Matching in Future Plasma Wakefield-based Colliders. United States: N. p., 2009. Web. doi:10.1063/1.3080971.
Gholizadeh, Reza, Muggli, Patric, Katsouleas, Tom, & Mori, Warren. Preservation of Ultra Low Emittances Using Adiabatic Matching in Future Plasma Wakefield-based Colliders. United States. https://doi.org/10.1063/1.3080971
Gholizadeh, Reza, Muggli, Patric, Katsouleas, Tom, and Mori, Warren. 2009. "Preservation of Ultra Low Emittances Using Adiabatic Matching in Future Plasma Wakefield-based Colliders". United States. https://doi.org/10.1063/1.3080971.
@article{osti_21255282,
title = {Preservation of Ultra Low Emittances Using Adiabatic Matching in Future Plasma Wakefield-based Colliders},
author = {Gholizadeh, Reza and Muggli, Patric and Katsouleas, Tom and Mori, Warren},
abstractNote = {The Plasma Wakefield Accelerator is a promising technique to lower the cost of the future high energy colliders by offering orders of magnitude higher gradients than the conventional accelerators. It has been shown that ion motion is an important issue to account for in the extreme regime of ultra high energies and ultra low emittances, characteristics of future high energy collider beams. In this regime, the transverse electric field of the beam is so high that in simulations, the plasma ions cannot be considered immobile at the time scale of electron plasma oscillation, thereby leading to a nonlinear focusing force. Therefore, the transverse emittance of a beam will not be preserved under these circumstances. However, we show that matched profile in case of a nonlinear focusing force still exists and can be derived from Vlasov equation. Furthermore, we introduce a plasma section that can reduce the emittance growth by adiabatically reducing the ion mass and hence increasing the nonlinear term in the focusing force. Simulation results are presented.},
doi = {10.1063/1.3080971},
url = {https://www.osti.gov/biblio/21255282}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1086,
place = {United States},
year = {Thu Jan 22 00:00:00 EST 2009},
month = {Thu Jan 22 00:00:00 EST 2009}
}