8-10 April 2014 CFS-ADI Joint Meeting Interaction Region Solutions Hybrid Detector Hall Access impact on Overall Construction schedule Yoshinobu NISHIMOTO 8-10 April 2014 CFS-ADI Joint Meeting

Back ground in latest Hybrid study Results of first step study HT, VS, Hybrid Construction cost Shaft construction and Lowering System are expensive But mechanical facility cost of shaft case is inexpensive than tunnel case Construction period Shorter in shaft case because, smaller section tunnel and smaller D/H. Comments, pros and cons from Detector team Both of shaft and tunnel access will be better. Shaft access is easy to install in ILD case similar to CMS Risks in Hybrid case, geology, wider surface ground , larger buildings , is it practical ? Next study “Current study” Hybrid option Hybrid-A : base case of Hybrid Both detectors installed through VS Hybrid-B ILD-VS and SiD-HT There are a shaft and a tunnel in Hybrid case, use them each other in ILD and SiD. Hybrid-C Both detectors installed through HT Just adding UT shaft to HT case Shaft access available, and mechanical facility cost will be reduced. There are no conclusive different in both case 8-10 April 2014 CFS-ADI Joint Meeting

Hybrid option case study Baseline Hybrid-A Hybrid-B Hybrid-C 1 HT (11x11m 7%grad) Detector assembling is inside of DH 1 HT (8.0x7.5m 10%gradl) 2 VS (D18m, D10m) Detectors assembling is on-ground. 1 HT (9.5x9.0m 7%gradl) 1 VS (D18m) ILD assembling on-ground SiD inside D/H 1 VS (D10m) UT lines in DR/AT UT lines in UT shaft UT lines in Main shaft DH 175,000m3 L144m H42m W25m DH 128,000m3 L108m H42m W25m DH 165,000m3 L134m H42m W25m Heavy lowering system non Heavy lowering system necessary Location of DH and assembly yd. can be selected individually. Assembly hall is above D/H same as on the left Human pass way :car Machine and materials tunnel by vehicles Human pass way :elevator Machine and materials ILD:VS HT , SiD:HT Environmental impact will be smaller during construction. Noise reduction Evacuation ways Main AT and DR HT.   Main AT W11m Grad7% Assembly Yd D/H Upper A/T   D/H Assembly Yd Main AT W8m Grad10%   D/H Assembly Yd Main AT W9.5m Grad7%   D/H Assembly Yd Main AT W11m Grad7% 8-10 April 2014 CFS-ADI Joint Meeting

Baseline General layout Tunnel access for D/H Considering minimize of construction cost, total tunnel length shorter. Main A/T divides into Upper A/T and Lower A/T. D/R A/T Lower A/T Upper A/T Main A/T 8-10 April 2014 CFS-ADI Joint Meeting

Baseline Detector hall 8-10 April 2014 CFS-ADI Joint Meeting

Installation depth of D/H in case of Hybrid case P wave velocity (m/s) Ground surface Soil or weathered rock thickness ~50m Minimum hard rock coverage ~40m equivalent to cavern height Hard rock Geological condition is not certain at the D/H place in case of Hybrid case. Assume the condition from borehole investigation result implemented near place. Soil or weathered weak rock : 50m D/H Top : EL.140m D/H Bottm : EL. 98m 2/23/2019

Hybrid Case Common layout Access tunnel arrangement 2 hear-pin curves , because 3 points (portal, upper connection, lower connection) are near. Keep sufficient separation distance from B/T, D/H, D/R. Min. radius is 50m transporter vehicle. Gradient Hybrid A,C 7% and adding 10% level part Hybrid B 10% and adding 10% level part Ground forming “Just trial study” Two elevation along the slope EL. 190m and 220m Each land area : more than 20,000m2 Near the existing road 20,000m2 34,000m2 8-10 April 2014 CFS-ADI Joint Meeting

Hybrid-A Tunnel arrangement Main shaft D18m : IR point and ellipse shape UT shaft D10m : UT cavern with elevator 8-10 April 2014 CFS-ADI Joint Meeting

Hybrid-A Shaft and Tunnel section 8-10 April 2014 CFS-ADI Joint Meeting

Hybrid-A Detector hall Detector hall length is shortest. Is it available? 8-10 April 2014 CFS-ADI Joint Meeting

Hybrid-B Tunnel arrangement Main shaft D18m : ILD side end, utilities and elevator is inside of Main shaft Tunnel section is decided considering SiD installation W9.5m x H9.0 with evacuation path. 8-10 April 2014 CFS-ADI Joint Meeting

Hybrid-B Shaft and Tunnel section 8-10 April 2014 CFS-ADI Joint Meeting

Hybrid-B Detector hall Detector hall length ILD shortened SiD same as TDR 8-10 April 2014 CFS-ADI Joint Meeting

Hybrid-C Tunnel arrangement UT shaft D10m : UT cavern, utilities and elevator Tunnel section is largest 8-10 April 2014 CFS-ADI Joint Meeting

Hybrid-C Shaft and Tunnel section 8-10 April 2014 CFS-ADI Joint Meeting

Hybrid-C Detector hall Detector hall length as the same as TDR 8-10 April 2014 CFS-ADI Joint Meeting

Architectural and Mechanical facility Spec Unit Baseline HB-A HB-B HB-C DH-A/T Evacuation pass way H2.5xW2.0m m 980 1,020 1,480 DH-A/T Doors 4.5m2 pcs 20 30 DR-A/T Evacuation pass way 1,000 DR-AT Doors Shaft Elevator 17num 150m/min set - 1 Shaft Evacuation Stair 140m 2 Shaft Evacation Doors 55 220 Mechanical Spec Unit Baseline HB-A HB-B HB-C LCW φ750mm CS 2way m 2,000 260 Chw φ200mm CS 2way Pipes for supply φ100mm SUS 1,000 130 Pipes for return φ200mm SUS Ducts 2.6m×2.0m 2way Cost of Heavy Lowering System is very expensive, almost 50% of total, but it not sure. 8-10 April 2014 CFS-ADI Joint Meeting

8-10 April 2014 CFS-ADI Joint Meeting Handling equipment Items Spec Unit Baseline HB-A HB-B HB-C DH Main/H Crane 250t S25m h35m pcs 2 215t S25m h35m 1 80t S25m h35m 40t S25m h35m DH Alcove Hoist Crane 2.5t S25m h25m 4 Assembly Hall 250t S25m h130m Heavy Lowering system 4100t h130m Cost of Heavy Lowering System is very expensive, almost 50% of total, but it not sure. 8-10 April 2014 CFS-ADI Joint Meeting

D/H construction procedure CFS work Time line Upper A/T Arch Ex. Side wall or side pillar conc. Bottom drainage Base concrete Alcoves Ex. Side wall drainage Architectural and mechanical facility Interior finishing Lower A/T BT connection Ex. Crane inst. Temporary crane Shaft Ex. & lining Bench Ex. Detector Inst. Critical Path. 8-10 April 2014 CFS-ADI Joint Meeting

Progress rate based on TDR Tunnel Cavern Shaft 8-10 April 2014 CFS-ADI Joint Meeting

Baseline (Detectors / HT installation) Schedule Main A/T is shorter because of portal EL. Is lower 8-10 April 2014 CFS-ADI Joint Meeting

Hybrid-A (Detectors / VS installation) Schedule 8-10 April 2014 CFS-ADI Joint Meeting

Hybrid-B (ILD / VS, SiD / HT installation) Schedule Main-Upper EL.190-132.4m：⊿H57.6m　7%grad. X110%= 905m Lower EL.132.4-97.9m:⊿H34.5m 7%grad. X110%=550m 8-10 April 2014 CFS-ADI Joint Meeting

8-10 April 2014 CFS-ADI Joint Meeting Hybrid-C (Detectors / HT installation with UT/VS) Construction Schedule Main-Upper EL.190-132.4m：⊿H57.6m　7%grad. X110%= 905m Lower EL.132.4-97.9m:⊿H34.5m 7%grad. X110%=550m 8-10 April 2014 CFS-ADI Joint Meeting

Baseline (Detectors / HT installation) Cost Estimation Items Spec Unit Qt. Unit P Amount k JPY Portal work W11.0 H11.0 LS 1 Main A/T D2 m 150 Main A/T 595 Upper A/T W8.0, H7.5 100 Lower A/T 540 EH connect T 190 Subtotal EH W25.0, H42.0, L144 m3 157,560 EH ILD Garage W20.0, H19.6, L12.5 9,000 EH SiD Garage W20.0, H18.0, L12.5 9,200 Drainage for Hall @10m mesh 910 PS Anchor pcs 1,850 Based Concrete t=1.0 4,550 Side Wall Concrete t=1.0 h30m 13,020 Total 8-10 April 2014 CFS-ADI Joint Meeting

Hybrid-A (Detectors / VS installation) Cost Estimation Items Spec Unit Qt. nit P Amount k JPY Portal work W8.0, H7.5 LS Main A/T D2 m 150 Main A/T 510 Upper A/T 100 Lower A/T 360 EH connect T 160 Subtotal Main Shaft D18m Portal 1 Shelter Soil 20.0 Rock 67.6 UT Shaft D10m 88.6 EH W25.0, H42.0, L108 m3 118,170 EH ILD Garage W20.0, H19.6, L12.5 9,000 EH SiD Garage W20.0, H18.0, L12.5 9,200 Drainage for Hall @10m mesh 630 PS Anchor pcs 1,435 Based Concrete t=1.0 3,650 Side Wall Concrete t=1.0 h30m 10,860 Total 8-10 April 2014 CFS-ADI Joint Meeting

Hybrid-B (ILD / VS, SiD / HT installation) Cost Estimation Items Spec Unit Qt. Unit P Amount k JPY Portal work W9.5, H9.0 LS 1 Main A/T D2 m 150 Main A/T 655 Upper A/T W8.0, H7.5 100 Lower A/T 550 EH connect T 160 Subtotal Main Shaft D18m Portal Shelter Soil 20.0 Rock 67.6 EH W25, H42, L134 m3 146,600 EH ILD Garage W20, H19.6, L12.5 9,000 EH SiD Garage W20, H18.0, L12.5 9,200 Drainage for Hall @10m mesh 910 PS Anchor pcs 1,735 Based Concrete t=1.0 4,300 Side Wall Concrete t=1.0 h30m 12,420 Total 8-10 April 2014 CFS-ADI Joint Meeting

Hybrid-C (Detectors / HT installation with UT/VS) Cost Estimation Items Spec Unit Qt. Unit P Amount k JPY Portal work W11.0 H11.0 LS 1 Main A/T D2 m 150 Main A/T 655 Upper A/T W8.0, H7.5 100 Lower A/T 550 EH connect T 190 Subtotal UT/EV Shaft D10m Portal Shelter Soil 20.0 Rock 88.6 EH W25, H42, L144 m3 157,560 EH ILD Garage W20, H19.6, L12.5 9,000 EH SiD Garage W20, H18.0, L12.5 9,200 Drainage for Hall @10m mesh 910 PS Anchor pcs 1,850 Based Concrete t=1.0 4,550 Side Wall Concrete t=1.0 h30m 13,020 Total 8-10 April 2014 CFS-ADI Joint Meeting

Summary of Cost and Schedule Baseline Hybrid-A Hybrid-B Hybrid-C Construction periods after land development 61.7 months 49.1 months 58.1 months 62.6 months Construction Costs 100% 109% 115% 101%   Main AT W11m Grad7% Assembly Yd D/H Upper A/T   D/H Assembly Yd Main AT W8m Grad10%   D/H Assembly Yd Main AT W9.5m Grad7%   D/H Assembly Yd Main AT W11m Grad7% 8-10 April 2014 CFS-ADI Joint Meeting

Summary of Cost and Schedule 8-10 April 2014 CFS-ADI Joint Meeting

8-10 April 2014 CFS-ADI Joint Meeting Issues Geological condition Geological condition is one of the critical condition to decide Hybrid case At least one borehole investigation / L=150m Seismic exploration Topographical map Land　use condition Agricultural promotion area, forest, cultural asset, ,,, Surface ground use demarcation Detector team and CFS CFS work not only D/H and assembling will be carried out parallel. Space and schedule Same issue is in case of baseline 8-10 April 2014 CFS-ADI Joint Meeting

Raise boring system

8-10 April 2014 CFS-ADI Joint Meeting Shaft excavation Noise reduction shelter JAEA 8-10 April 2014 CFS-ADI Joint Meeting