Radiation Safety Aspects of the Linac Coherent Light Source Project At SLAC

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Description

The Linac Coherent Light Source (LCLS) is a Self-Amplified Spontaneous Emission based Free Electron Laser (FEL) that is being designed and built at the Stanford Linear Accelerator Center (SLAC) by a multilaboratory collaboration. This facility will provide ultra-short pulses of coherent x-ray radiation with the fundamental harmonic energy tunable over the energy range of 0.82 to 8.2 keV. One-third of the existing SLAC LINAC will compress and accelerate the electron beam to energies ranging from 4.5 GeV to 14.35 GeV. The beam will then be transported through a 130-meter long undulator, emit FEL and spontaneous radiation. After passing through the ... continued below

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18 pages

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Rokni, S.H.; Fasso, A.; Mao, S.; Vincke, H. & /LCLS, /SLAC July 6, 2005.

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Description

The Linac Coherent Light Source (LCLS) is a Self-Amplified Spontaneous Emission based Free Electron Laser (FEL) that is being designed and built at the Stanford Linear Accelerator Center (SLAC) by a multilaboratory collaboration. This facility will provide ultra-short pulses of coherent x-ray radiation with the fundamental harmonic energy tunable over the energy range of 0.82 to 8.2 keV. One-third of the existing SLAC LINAC will compress and accelerate the electron beam to energies ranging from 4.5 GeV to 14.35 GeV. The beam will then be transported through a 130-meter long undulator, emit FEL and spontaneous radiation. After passing through the undulator, the electron beam is bent to the main electron dump. The LCLS will have two experiment halls as well as x-ray optics and infrastructure necessary to make use of the FEL for research and development in a variety of scientific fields. The facility design will incorporate features that would make it possible to expand in future such that up to 6 independent undulators can be used. While some of the radiation protection issues for the LCLS are similar to those encountered at both high-energy electron linacs and synchrotron radiation facilities, LCLS poses new challenges as well. Some of these new issues include: the length of the facility and of the undulator, the experimental floor in line with the electron beam and the occupancy near zero degrees, and the very high instantaneous intensity of the FEL. The shielding design criteria, methodology, and results from Monte Carlo and analytical calculations are presented.

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18 pages

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  • Contributed to 3rd International Workshop on Radiation Safety of Synchrotron Radiation Sources, SPring8, Mikazauki, Hyogo, Japan, 17-19 Nov 2004

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  • Report No.: SLAC-PUB-11089
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 878870
  • Archival Resource Key: ark:/67531/metadc875602

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  • July 6, 2005

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  • Sept. 21, 2016, 2:29 a.m.

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  • Dec. 1, 2016, 12:57 p.m.

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Rokni, S.H.; Fasso, A.; Mao, S.; Vincke, H. & /LCLS, /SLAC. Radiation Safety Aspects of the Linac Coherent Light Source Project At SLAC, article, July 6, 2005; [Menlo Park, California]. (digital.library.unt.edu/ark:/67531/metadc875602/: accessed August 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.