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Asian Region Detector Hall Design

March 22, 2012 1130 – 1145. Asian Region Detector Hall Design. Outline. Design Concept & Hall Layout Access Tunnel Top heading Tunnel Displacement of detector hall by push-pull operation. Design Concept. Ensure the area is for detector assembly G arage space for ILD and SiD

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Asian Region Detector Hall Design

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  1. March 22, 2012 1130 – 1145 Asian RegionDetector Hall Design

  2. Outline • Design Concept & Hall Layout • Access Tunnel • Top heading Tunnel • Displacement of detector hall by push-pull operation

  3. Design Concept • Ensure the area is for detector assembly • Garage space for ILD and SiD • Sufficient tunnel section should be ensured for transportation of a part of detector • Utility cavern for conventional facilities

  4. A Birds-eye View

  5. Beam tunnel Garage Detector Hall A ILD SiD • Assembly area is located in front of the junction of access tunnels • Beam tunnel is up to crossing point of access tunnel • Garage for ILD and SiD is placed on the both side of cavern • Capacity of overhead crane is 250 ton A Detector Assembly area Overhead crane Section A-A

  6. Utility cavern Small Access Tunnel Detector Hall ILD SiD • With 11m width access tunnel for SiD and ILD installation • Two access tunnels are connected on the same side of cavern • Access tunnels are connected at the same floor level of cavern’s bottom floor • Utility cavern is placed for utility (electric facilities, parking, various rooms…) • Small access tunnels are connected to the garages for the pass • Ventilation shaft is placed at utility cavern Ventilation shaft Access Tunnel

  7. Access Tunnel • The dimension of access tunnels are determined by the transporting maximum component size of detector • Small Access Tunnel is used for personal passageway

  8. Top Heading Tunnelfor The Hall • The tunnel is utilized for initial excavation (arch excavation) during construction phase and for ventilation during operation phase

  9. Displacement analysis by 3D FEM • Detector ILD and SiD are heavy • Displacement surround detector hall should be confirmed during operation (push-pull) • Analysis Condition • Method: 3D Elastic FEM analysis • Cavern shape: simplified shape (I-type cavern) • Model: H500m x W500m x L520m (cover 200m) • Rock properties: based on an investigation at candidate site • Rock support: not considered

  10. Push-Pull Detector ILD or SiD Platform 20m*20m*t3m Loading condition Nothing • ILD: 14,700 tons • SiD: 8,600 tons • Detector is sit on a platform(concrete, t=3m) • Loaded on the platform as a uniformly-distributed load Concrete slab t=3m Before installation Beam line Loading condition LOS Both off-line ILD SiD Loading condition LSO ILD off-line SiD on-line ILD SiD Loading condition OLS ILD on-line SiDoff-line ILD SiD

  11. Result of analysis(Base concrete slab deformation) Loading condition LOS (mm) Loading condition LSO Loading condition OLS Loading condition LOS Loading condition LSO Loading condition OLS

  12. Beam line section ILD line section Displacement for each section(Floor Level) Longitudinal section ILD SiD SiD line section

  13. Displacement(Beam line elevation) Loading condition LOS Loading condition LSO Loading condition OLS ILD SiD ILD SiD ILD SiD

  14. Summary • Assembly space is ensured • Detector garages are placed • Utility cavern is constructed separately • Sloped access tunnel has a enough size to transport detector parts • Top heading tunnel is constructed for excavation and ventilation • The maximum displacement at the floor level is under 1.3mm • The maximum displacement at the beam tunnel elevation is under 0.4mm

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