First operation of a photoinjector at high-average power

David H. Dowell; Keith J. Davis; K. D. Friddell; E. L. Tyson; Christy A. Lancaster; L. D. Milliman; Robert E. Rodenburg; T. Aas; M. Bemes; S. Z. Bethel; Patrick E. Johnson; K. Murphy; C. Whelen; John L. Adamski; Denis J. Pistoresi; Donald R. Shoffstall; George E. Busch; Dennis K. Remelius

doi:10.1117/12.164801

29 November 1993 First operation of a photoinjector at high-average power

David H. Dowell, Keith J. Davis, K. D. Friddell, E. L. Tyson, Christy A. Lancaster, L. D. Milliman, Robert E. Rodenburg, T. Aas, M. Bemes, S. Z. Bethel, Patrick E. Johnson, K. Murphy, C. Whelen, John L. Adamski, Denis J. Pistoresi, Donald R. Shoffstall, George E. Busch, Dennis K. Remelius

Author Affiliations +

Proceedings Volume 2013, Electron-Beam Sources of High-Brightness Radiation; (1993) https://doi.org/10.1117/12.164801
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

Abstract

Tests of the Boeing Average Power Laser Experiment injector have demonstrated first-time operation of a photocathode RF gun electron accelerator at 25% duty factor. The multi-alkali photocathode was illuminated by a frequency-doubled, mode-locked Nd:YLF laser. The cathode was placed in the first cell of four single-cell cavities resonant at 433 MHz. The 4 cavities accelerated the beam to 5 MeV. The pulse duration was 8.3 ms and the repetition rate was 30 Hz. True average beam currents of up to 35 mA have been accelerated to 5 MeV for an average beam power of 170 kilowatts. The 35 mA beam current exceeded previous photocathode performance by a factor of 1000.

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David H. Dowell, Keith J. Davis, K. D. Friddell, E. L. Tyson, Christy A. Lancaster, L. D. Milliman, Robert E. Rodenburg, T. Aas, M. Bemes, S. Z. Bethel, Patrick E. Johnson, K. Murphy, C. Whelen, John L. Adamski, Denis J. Pistoresi, Donald R. Shoffstall, George E. Busch, and Dennis K. Remelius "First operation of a photoinjector at high-average power", Proc. SPIE 2013, Electron-Beam Sources of High-Brightness Radiation, (29 November 1993); https://doi.org/10.1117/12.164801

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