A Drive Laser for Multi-Bunch Photoinjector Operation

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Numerous electron beam applications would benefit from increased average current without sacrificing beam brightness. Work is underway at LLNL to investigate the performance of X-band photoinjectors that would generate electron bunches at a rate matching the RF drive frequency, i.e. one bunch per RF cycle. A critical part of this effort involves development of photo-cathode drive laser technology. Here we present a new laser architecture that can generate pulse trains at repetition rates up to several GHz. This compact, fiber-based system is driven directly by the accelerator RF and so is inherently synchronized with the accelerating fields, and scales readily ... continued below

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Gibson, D J; Cormier, E; Messerly, M J; Prantil, M A & Barty, C J May 11, 2012.

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Numerous electron beam applications would benefit from increased average current without sacrificing beam brightness. Work is underway at LLNL to investigate the performance of X-band photoinjectors that would generate electron bunches at a rate matching the RF drive frequency, i.e. one bunch per RF cycle. A critical part of this effort involves development of photo-cathode drive laser technology. Here we present a new laser architecture that can generate pulse trains at repetition rates up to several GHz. This compact, fiber-based system is driven directly by the accelerator RF and so is inherently synchronized with the accelerating fields, and scales readily over a wide range of drive frequencies (L-band through X-band). The system will be required to produce 0.5 {mu}J, {approx}200 fs rise time, spatially and temporally shaped UV pulses designed to optimize the electron beam brightness. Presented is the current status of this system, producing 2 ps pulses from a continuous-wave source.

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PDF-file: 5 pages; size: 0.5 Mbytes

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  • Presented at: IPAC 2012, New Orleans, LA, United States, May 20 - May 25, 2012

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  • Report No.: LLNL-PROC-557582
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 1043645
  • Archival Resource Key: ark:/67531/metadc845073

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • May 11, 2012

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  • May 19, 2016, 3:16 p.m.

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  • Dec. 5, 2016, 2:33 p.m.

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Gibson, D J; Cormier, E; Messerly, M J; Prantil, M A & Barty, C J. A Drive Laser for Multi-Bunch Photoinjector Operation, article, May 11, 2012; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc845073/: accessed November 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.