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Title: Quadrupolar mode measurements for space charge dominated beams

On-line monitoring of beam quality requires non-invasive transverse phase space diagnostics. Emittance measurement is particularly challenging for high-intensity particle beams, since space charge complicates the beam dynamics during measurement. Quadrupolar mode measurements have been empirically shown to provide information about the beam emittance, but so far only for small relative space charge effects, where the results depend on a linear theory. We present a quadrupolar mode measurement for space charge dominated beams with unsplit tunes using multi-turn resonant excitation. Furthermore, results from experiments performed at the University of Maryland Electron Ring (UMER) are compared to both analytic and numerical analysis of the rms envelope equations.
Authors:
ORCiD logo [1] ;  [1] ;  [1] ;  [1]
  1. Univ. of Maryland, College Park, MD (United States). Institute for Research in Electronics and Applied Physics
Publication Date:
Grant/Contract Number:
SC0010301
Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 25; Journal Issue: 7; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Research Org:
Univ. of Maryland, College Park, MD (United States). Institute for Research in Electronics and Applied Physics
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); U.S. Department of the Navy, Office of Naval Research (ONR). Joint Technology Office
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; Quadrupolar; Diagnostics; Beam envelope; Space charge; High intensity; Emittance
OSTI Identifier:
1459613
Alternate Identifier(s):
OSTI ID: 1460140

Stem, William Durst, Beaudoin, Brian L., Haber, Irving, and Koeth, Timothy W.. Quadrupolar mode measurements for space charge dominated beams. United States: N. p., Web. doi:10.1063/1.5026677.
Stem, William Durst, Beaudoin, Brian L., Haber, Irving, & Koeth, Timothy W.. Quadrupolar mode measurements for space charge dominated beams. United States. doi:10.1063/1.5026677.
Stem, William Durst, Beaudoin, Brian L., Haber, Irving, and Koeth, Timothy W.. 2018. "Quadrupolar mode measurements for space charge dominated beams". United States. doi:10.1063/1.5026677.
@article{osti_1459613,
title = {Quadrupolar mode measurements for space charge dominated beams},
author = {Stem, William Durst and Beaudoin, Brian L. and Haber, Irving and Koeth, Timothy W.},
abstractNote = {On-line monitoring of beam quality requires non-invasive transverse phase space diagnostics. Emittance measurement is particularly challenging for high-intensity particle beams, since space charge complicates the beam dynamics during measurement. Quadrupolar mode measurements have been empirically shown to provide information about the beam emittance, but so far only for small relative space charge effects, where the results depend on a linear theory. We present a quadrupolar mode measurement for space charge dominated beams with unsplit tunes using multi-turn resonant excitation. Furthermore, results from experiments performed at the University of Maryland Electron Ring (UMER) are compared to both analytic and numerical analysis of the rms envelope equations.},
doi = {10.1063/1.5026677},
journal = {Physics of Plasmas},
number = 7,
volume = 25,
place = {United States},
year = {2018},
month = {7}
}