dorsal/arxiv
View SchemaHigh-Brightness Beams from a Light Source Injector: The Advanced Photon Source Low-Energy Undulator Test Line Linac
| Authors | G. Travish, S. Biedron, M. Borland, M. Hahne, K. Harkay, J. W. Lewellen, A. Lumpkin, S. Milton, N. Sereno |
|---|---|
| Categories | |
| ArXiv ID | physics/0008041 |
| URL | https://arxiv.org/abs/physics/0008041 |
| Journal | eConfC000821:THC19,2000 |
Abstract
The use of existing linacs, and in particular light source injectors, for free-electron laser (FEL) experiments is becoming more common due to the desire to test FELs at ever shorter wavelengths. The high-brightness, high-current beams required by high-gain FELs impose technical specifications that most existing linacs were not designed to meet. Moreover, the need for specialized diagnostics, especially shot-to-shot data acquisition, demands substantial modification and upgrade of conventional linacs. Improvements have been made to the Advanced Photon Source (APS) injector linac in order to produce and characterize high-brightness beams. Specifically, effort has been directed at generating beams suitable for use in the low-energy undulator test line (LEUTL) FEL in support of fourth-generation light source research. The enhancements to the linac technical and diagnostic capabilities that allowed for self-amplified spontaneous emission (SASE) operation of the FEL at 530 nm are described. Recent results, including details on technical systems improvements and electron beam measurement techniques, will be discussed. The linac is capable of accelerating beams to over 650 MeV. The nominal FEL beam parameters used are as follows: 217 MeV energy; 0.1-0.2% rms energy spread; 4-8 um normalized rms emittance; 80-120 A peak current from a 0.2-0.7 nC charge at a 2-7 ps FWHM bunch.
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"abstract": "The use of existing linacs, and in particular light source injectors, for\nfree-electron laser (FEL) experiments is becoming more common due to the desire\nto test FELs at ever shorter wavelengths. The high-brightness, high-current\nbeams required by high-gain FELs impose technical specifications that most\nexisting linacs were not designed to meet. Moreover, the need for specialized\ndiagnostics, especially shot-to-shot data acquisition, demands substantial\nmodification and upgrade of conventional linacs. Improvements have been made to\nthe Advanced Photon Source (APS) injector linac in order to produce and\ncharacterize high-brightness beams. Specifically, effort has been directed at\ngenerating beams suitable for use in the low-energy undulator test line (LEUTL)\nFEL in support of fourth-generation light source research. The enhancements to\nthe linac technical and diagnostic capabilities that allowed for self-amplified\nspontaneous emission (SASE) operation of the FEL at 530 nm are described.\nRecent results, including details on technical systems improvements and\nelectron beam measurement techniques, will be discussed. The linac is capable\nof accelerating beams to over 650 MeV. The nominal FEL beam parameters used are\nas follows: 217 MeV energy; 0.1-0.2% rms energy spread; 4-8 um normalized rms\nemittance; 80-120 A peak current from a 0.2-0.7 nC charge at a 2-7 ps FWHM\nbunch.",
"arxiv_id": "physics/0008041",
"authors": [
"G. Travish",
"S. Biedron",
"M. Borland",
"M. Hahne",
"K. Harkay",
"J. W. Lewellen",
"A. Lumpkin",
"S. Milton",
"N. Sereno"
],
"categories": [
"physics.acc-ph",
"physics.ins-det"
],
"journal_ref": "eConfC000821:THC19,2000",
"title": "High-Brightness Beams from a Light Source Injector: The Advanced Photon Source Low-Energy Undulator Test Line Linac",
"url": "https://arxiv.org/abs/physics/0008041"
},
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