High average current electron guns for high-power free electron lasers
نویسندگان
چکیده
منابع مشابه
High Average Current Electron Guns for High-Power FELs
High average power FELs require high average current electron injectors capable of generating high quality, short duration electron bunches with a repetition rate equal to the frequency of the rf linac. In this paper we propose, analyze and simulate an rf-gated, gridded thermionic electron gun for use in high average power FELs. Thermionic cathodes can provide the necessary high current, have l...
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Free-electron-laser (FEL) oscillators have only recently achieved their original promise as producers of high-power, short-wavelength, tunable radiation. Room-temperature accelerator systems have generally had limited duty factor due to excessive Ohmic losses on cavity walls. The application of superconducting radio-frequency (SRF) technology has now permitted an increase by more than two order...
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High-average-power free-electron lasers often rely on energy-recovering linacs. In a high-efficiency free electron laser, the main limitation to high average power stems from the fractional energy spread induced by the free-electron laser process. Managing beams with large fractional energy spread while simultaneously avoiding beam losses is extremely challenging and relies on intricate longitu...
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Free-Electron Laser (FEL) is an all-electric, high-power, high beam-quality source of coherent radiation, tunable – unlike other laser sources – at any wavelength within wide spectral region from hard X-rays to far-IR and beyond. After the initial push in the framework of the "Star Wars" program, the FEL technology benefited from decades of R&D and scientific applications. Presently, there are ...
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Cooling intense high-energy hadron beams remains a major challenge in modern accelerator physics. Synchrotron radiation of such beams is too feeble to provide significant cooling: even in the Large Hadron Collider (LHC) with 7 TeV protons, the longitudinal damping time is about thirteen hours. Decrements of traditional electron cooling decrease rapidly as the high power of beam energy, and an e...
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ژورنال
عنوان ژورنال: Physical Review Special Topics - Accelerators and Beams
سال: 2011
ISSN: 1098-4402
DOI: 10.1103/physrevstab.14.020702