Radiation Protection Aspects in the Design of the Linac Coherent Light Source II

Technical Report · Mon Jan 21 04:00:00 EST 2013

DOI:https://doi.org/10.2172/1060211· OSTI ID:1060211

Santana Leitner, Mario ^[1]; Liu, James C. ^[1]; Mao, Stan X. ^[1]; Nicolas, Ludovic ^[1]; Rokni, Sayed H. ^[1]; Xiao, Shanjie ^[1]

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1. SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

Since 2009, the Linac Coherent Light Source at the SLAC National Accelerator Laboratory produces ultra-fast, ultra-bright X-ray pulses with which atoms and molecules can be visualized as they move, hence revealing the mechanics of chemistry and revolutionizing the research in fields ranging from biology to energy sciences. LCLS-II is a sister vicinal facility with new features that will be soon constructed to address the surging demand of FEL beams. In this paper we summarize the radiation protection scheme for LCLS-II and we describe diverse challenges and the adopted solutions. In particular we present the access modes of LCLS-II that allow simultaneous operation with LCLS. Monte Carlo simulations have been used to design beam components like stoppers and to define the thickness of walls. Also, by carefully analyzing the contributors to the residual dose, the shielding of the main dumps has been optimized to meet engineering constraints while allowing access after short cool down.

• Research Organization: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 1060211
• Report Number(s): SLAC-PUB--15358
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
FEL
FLUKA
LCLS
Monte Carlo
SAFETY
XFEL
activation
heat deposition
shielding