Simulation Issues for RF Photoinjectors

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Accurate simulation of radiofrequency photoinjector performance remains a challenge in predicting the performance of future linear colliders and next-generation light sources. Calculated performance consistently and significantly exceeds measured performance. This discrepancy can be traced to two principal sources: measurement uncertainty and unrealistic assumptions and approximations made in the numerical calculations. The dynamics involved make the calculation challenging: electrons are accelerated from rest to relativistic velocities in millimeters. Strong wakefield and space charge effects require that fields be accurately represented on very small distance scales over large volumes. These issues will be discussed, the results of detailed code-to-code comparisons for tracking ... continued below

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10 pages

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Colby, E.; Ivanov, V.; Li, Z.; Limborg, C. & /SLAC September 26, 2005.

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Accurate simulation of radiofrequency photoinjector performance remains a challenge in predicting the performance of future linear colliders and next-generation light sources. Calculated performance consistently and significantly exceeds measured performance. This discrepancy can be traced to two principal sources: measurement uncertainty and unrealistic assumptions and approximations made in the numerical calculations. The dynamics involved make the calculation challenging: electrons are accelerated from rest to relativistic velocities in millimeters. Strong wakefield and space charge effects require that fields be accurately represented on very small distance scales over large volumes. These issues will be discussed, the results of detailed code-to-code comparisons for tracking and particle-in-cell codes will be shown, and recommendations for further tests and improvements will be made.

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10 pages

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  • Contributed to 7th International Computational Accelerator Physics Conference (ICAP 2002), East Lasing, Michigan, 15-18 Oct 2002

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  • Report No.: SLAC-PUB-11494
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 878389
  • Archival Resource Key: ark:/67531/metadc875373

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  • September 26, 2005

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  • Sept. 21, 2016, 2:29 a.m.

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  • Dec. 1, 2016, 8:21 p.m.

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Colby, E.; Ivanov, V.; Li, Z.; Limborg, C. & /SLAC. Simulation Issues for RF Photoinjectors, article, September 26, 2005; [Menlo Park, California]. (digital.library.unt.edu/ark:/67531/metadc875373/: accessed October 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.