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120731　VAC (UI&YS)

KAGRA Vacuum System Layout. 120731　VAC (UI&YS). Benchmark. YNO.130. XNO.130. NO.100. Tunnel. Coordinate of the KAGRA interferometer. ** How to decide the positions of optical instruments in the tunnel map?. KAGRA Vacuum System Layout. 120731　VAC (UI&YS). YNO. 130 Ho=362 m

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120731　VAC (UI&YS)

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  1. KAGRA Vacuum SystemLayout 120731　VAC (UI&YS) Benchmark YNO.130 XNO.130 NO.100 Tunnel Coordinate of the KAGRA interferometer ** How to decide the positions of optical instruments in the tunnel map?

  2. KAGRA Vacuum SystemLayout 120731　VAC (UI&YS) YNO. 130 Ho=362 m (47191.372 , 15098.218) Gauss-Kluegel projection Benchmark 3000 m XNO. 130 Ho=382 m (48311.858, 11006.212 ) NO. 100 Ho=373 m (45705.612, 12491.972) Tunnel map coordinate (two-dimension) **Benchmarks are set based on geodetic survey. ** Positions of these benchmarks is described by the terms of X, Y, and Orthometric height (Ho).

  3. KAGRA Vacuum SystemLayout 120731　VAC (UI&YS) Tunnel map coordinate (Xmap, Ymap, Ho) Z Takayama origin, zone VII, Japan Ho: height from geoid surface Xmap Latitude, Longitude, Height (B, L, H+He=H+Hg+Ho) Ymap H; radius of GRS80 of ellipsoid earth Hg; height of geoid surface from GRS80 surface B Geocentric coordinate (X, Y, Z) Y H He(ellipsoid height) = Ho(orthometric height) + Hg(geoid height) X **Convert the two-dimensional values to the three-dimensional ones. L • GRS80

  4. KAGRA Vacuum SystemLayout 120731　VAC (UI&YS) **Coordinate of the KAGRA interferometeris inclined by 1/300 against horizontal plane at center room. **X end room has a higher altitude and Y end room has a lower one, than that of horizontal plane at center room. Xopt optical plane of interferometer horizontal plane at X end X arm x y O (BS) horizontal plane at center room Yopt Y arm horizontal plane at Y end

  5. KAGRA Vacuum SystemLayout 120731　VAC (UI&YS) **We are calculating exact each coordinate value of optical instruments on KAGRA tunnel.

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