Operational Radiation Protection in Synchrotron Light and Free Electron Laser Facilities

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Description

The 3rd generation synchrotron radiation (SR) facilities are storage ring based facilities with many insertion devices and photon beamlines, and have low injection beam power (< few tens of watts), but extremely high stored beam power ({approx} 1 GW). The 4th generation x-ray free electron laser (FEL) facilities are based on an electron Linac with a long undulator and have high injection beam power (a few kW). Due to its electron and photon beam characteristics and modes of operation, storage ring and photon beamlines have unique safety aspects, which are the main subjects of this paper. The shielding design limits, ... continued below

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56 pages

Creation Information

Liu, James C.; Rokni, Sayed H.; /SLAC; Vylet, Vaclav & Lab, /Jefferson December 11, 2009.

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Description

The 3rd generation synchrotron radiation (SR) facilities are storage ring based facilities with many insertion devices and photon beamlines, and have low injection beam power (< few tens of watts), but extremely high stored beam power ({approx} 1 GW). The 4th generation x-ray free electron laser (FEL) facilities are based on an electron Linac with a long undulator and have high injection beam power (a few kW). Due to its electron and photon beam characteristics and modes of operation, storage ring and photon beamlines have unique safety aspects, which are the main subjects of this paper. The shielding design limits, operational modes, and beam losses are first reviewed. Shielding analysis (source terms and methodologies) and interlocked safety systems for storage ring and photon beamlines (including SR and gas bremsstrahlung) are described. Specific safety issues for storage ring top-off injection operation and FEL facilities are discussed. The operational safety program, e.g., operation authorization, commissioning, training, and radiation measurements, for SR facilities is also presented.

Physical Description

56 pages

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  • Journal Name: Submitted to Radiation Protection Dosimetry; Conference: Submitted to the International School of Radiation Damage and Protection: Operational Radiation Protection for Accelerators in Research and Medicine, 14-20 May 2009, Erice, Italy

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  • Report No.: SLAC-PUB-13808
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 969258
  • Archival Resource Key: ark:/67531/metadc928948

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  • December 11, 2009

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  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 15, 2016, 3:40 p.m.

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Liu, James C.; Rokni, Sayed H.; /SLAC; Vylet, Vaclav & Lab, /Jefferson. Operational Radiation Protection in Synchrotron Light and Free Electron Laser Facilities, article, December 11, 2009; United States. (digital.library.unt.edu/ark:/67531/metadc928948/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.