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Title 4D Beam Tomography at the UCLA Pegasus Laboratory
  • V. Guo, P.E. Denham, P. Musumeci, A. Ody, Y. Park
    UCLA, Los Angeles, USA
Abstract We present an algorithm to tomographically reconstruct the 4D phase space of a beam distribution of a high brightness electron beam, based on the use of two fluorescent screens separated by a beamline containing a quadrupole triplet which can be used to impart arbitrary rotations to the beam phase space. The reconstruction method is based on generating a macroparticle distribution which matches the initial profile and then it is iteratively updated using the beam projections on the second screen until convergence is achieved. This process is repeated for many quadrupole current settings. The algorithm is benchmarked against GPT simulations, and then implemented at the UCLA Pegasus beamline to measure the phase space distribution for an upcoming high speed electron microscope experiment.
Funding National Science Foundation under Grant No. PHY-1549132 and grant PHY-1734215 and DOE grant No. DE-SC0009914. PD was supported by National Science Foundation under Grant No. DMR-1548924.
Paper download TUPP15.PDF [1.073 MB / 5 pages]
Poster download TUPP15_POSTER.PDF [1.089 MB]
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Conference IBIC2021
Series International Beam Instrumentation Conference (10th)
Location Pohang, Rep. of Korea
Date 24-28 May 2021
Publisher JACoW Publishing, Geneva, Switzerland
Editorial Board Changbum Kim (PAL, Pohang, Rep. of Korea); Volker R. W. Schaa (GSI, Darmstadt, Germany); Dong-Eon Kim (PAL, Pohang, Rep. of Korea); Jaeyu Lee (PAL, Pohang, Rep. of Korea)
Online ISBN 978-3-95450-230-1
Online ISSN 2673-5350
Received 06 September 2021
Accepted 16 September 2021
Issue Date 06 October 2021
DOI doi:10.18429/JACoW-IBIC2021-TUPP15
Pages 227-231
Creative Commons CC logoPublished by JACoW Publishing under the terms of the Creative Commons Attribution 3.0 International license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI.