. . "8" . "Huxford, R." . "RIV/61389021:_____/13:00421348" . . . "000329193500010" . "Scannell, R." . "B\u00F6hm, Petr" . . "Plasma diagnostics - interferometry; Spectroscopy and imaging; Optics; Plasma diagnostics - charged-particle spectroscopy"@en . . "Outline of optical design and viewing geometry for divertor Thomson scattering on MAST upgrade"@en . "[10871AF65F9D]" . "94899" . "I" . "1748-0221" . "Hawke, J." . "Outline of optical design and viewing geometry for divertor Thomson scattering on MAST upgrade" . . . "10.1088/1748-0221/8/11/C11010" . "GB - Spojen\u00E9 kr\u00E1lovstv\u00ED Velk\u00E9 Brit\u00E1nie a Severn\u00EDho Irska" . "12"^^ . . . "5"^^ . . . "Harrison, J." . "RIV/61389021:_____/13:00421348!RIV14-AV0-61389021" . . "11" . "Outline of optical design and viewing geometry for divertor Thomson scattering on MAST upgrade"@en . "The super-X divertor on MAST Upgrade will be diagnosed by a Thomson scattering diagnostic. A preliminary design of the collection optics and calculations of the diagnostic's performance are discussed in this paper. As part of the design the location and size of the collection cell were optimized to minimize vignetting, especially in the region of interest close to the divertor strike point. The design process was complicated by the limited access available in the closed divertor geometry. In the study of the diagnostic's performance, the radial resolution, projection of the laser image onto the fiber bundle, and impact of depth of field with a multiple laser system were investigated. In this design there is a trade-off between the resolution of the system and the lifetime of the beam dump. For this reason the beam has its focal point at the start of the viewing region and diverges in width to approximately five millmetrs near the divertor tile. The effect of this large variation" . "The super-X divertor on MAST Upgrade will be diagnosed by a Thomson scattering diagnostic. A preliminary design of the collection optics and calculations of the diagnostic's performance are discussed in this paper. As part of the design the location and size of the collection cell were optimized to minimize vignetting, especially in the region of interest close to the divertor strike point. The design process was complicated by the limited access available in the closed divertor geometry. In the study of the diagnostic's performance, the radial resolution, projection of the laser image onto the fiber bundle, and impact of depth of field with a multiple laser system were investigated. In this design there is a trade-off between the resolution of the system and the lifetime of the beam dump. For this reason the beam has its focal point at the start of the viewing region and diverges in width to approximately five millmetrs near the divertor tile. The effect of this large variation"@en . "Outline of optical design and viewing geometry for divertor Thomson scattering on MAST upgrade" . . "1"^^ . "Journal of Instrumentation" . .