ILC Utility Design Study for Kitakami-site CFS WG AWLC-SLAC 06262017 ILC Utility Design Study for Kitakami-site H. Hayano (KEK) for M. Yoshioka, T. Sanuki, T. Onuki, S. Narita, T. Okamura Y. Murakami, H. Aoki, I. Kumagai, Y. Kamezawa (Tohoku-ILC-preparation-office and KEK) Acknowledgement to Tohoku Electric, Toshiba, Yurtec, Takasago Thermal Eng, Atox, Maekawa, Tobishima, QST, Iwate Pref., Oshu City, Ichinoseki City, Ichinoseki Fire Station, AAA, LCC/ILC, KEK

Utility Design Targets, Conditions and Proposals Make the overall utility design specific to Kitakami Candidate Site Estimate Cost for All Utilities with easy decomposition for the staging case Estimate Installation Schedule of All Utilities Use TDR ECM=500GeV Accelerator (high-lumi upgrade) as a basement Two Vertical Shafts and One slope access in the collision point site One slope access in Damping Ring Far End streight section (proposal) Design change for under-ground access halls and passway (proposal) Six Slope Access for Linac, such as PM+/-8, PM+/-10, PM+/-12 No PM+/-13(escape access, water-drain) but One water-drain tunnel from the collision point (proposal)

Name Convention Interaction Region PM-12 AH-12 AS-0 AS-0a AS-12 PM-10 electron linac AS-0a AS-12 AH-10 PM-10 AS-0b AH-0a AS-10 PM-8 AH-8 AH-0 Interaction Region AS-8 damping ring PM+8 AH+8 AS+8 PM+10 AH+10 positron linac AS: Access Station (surface) AH: Access Hall (in tunnel) PM: Point of Merging with access tunnel AS+10 PM+12 AH+12 AS+12

Electric Power Distribution Design

Electricity Access Redundant power supply from (1) Local electric company and (2) LNG-CGS Mizusawa Station J-PARC 154 kV, 15 km Aerial wire Riken Main substation co-generation J-PARC Main substation

Electric Power from Tohoku Electric Co, Mizusawa Station ILC Trans Yard (reserved!) Reserved Trans Yards Two 154kV Trans Yards

Electric Power Load Table

Design of Electric Power Line System (1) Main subsation 66 kV Co-generation Substation 66 kV Lines 154 kV receive at AS-0 surface 66 kV receive at every AH in the tunnel 6.6 kV Lines Local Station 66 kV Lines Distribution in tunnel 6.6 kV receive at Main Linac Klystron Tunnel (400V, 200V, 100V distributed) Main subsation

Design of Electric Power Line System (2) Main subsation 66 kV Co-generation Substation at Access Hall 66 kV Lines 6.6 kV Lines 154 kV receive LNG space Local Station AH tunnel AS surface Number of local substation 54 in total splittable racks, distribute in-between Klystrons Linac RF tunnel

Air, Cooling Water Distribution Design

Cooling Water Supply from Oshu-city Water supply system from the Isawa dam facility to the access stations through pipe in the linac tunnel (250 A) Banshouji point ~13km Isawa Dam ILC From Oshu-city Banshouji Point, water supply availble. IP

Design of Cooling Water System Chiller and pumps Main Linac Cooling Water Schematics Access Station Access Hall Main Linac He compressor cooling Design conditions; 35 degree supply, DT = 30 degree (15 degree for racks and WG, 5 degree for He compressor), T control = +/- 1degree ordinary device, Pressure-forward,backward = determined from flow rate and pipe diameter, required flow-rate = from sum-up of RF unit power, assumed values for BDS and DR Water reservoir & supply

Design of He Compressor Cooling Water System Circulation pump 32℃ 8 compressor for one cryo plant DT =5C 37℃ Ground surface Access station Outdoor yard Closed water cooling type cooling tower Machine room Compressor room Circulation pump 32℃ 37℃

Design of Water Drainage System Access Station (surface) Access Hall (tunnel) Design conditions; drainage spring water from tunnel surface to the surface, use spring water as cooling water, or just dump

Design of Ventilation System RF tunnel accelerator tunnel Design conditions; 1/3 of circulation air is exhausted out with HEPA filter, 1/3 fresh air is taken in. put air into RF tunnel, exhaust air from accelerator tunnel, through holes of shield wall.

Temperature Settings Matters to consider Water temperature measurement by ground water observation hole as a function of elevation (by Iwate Prefecture/Tohoku Univ./Yachiyo Engineering) Matters to consider Cooling water temperature setting with emphasis on economical operation RF:　35℃⇒65℃ Cryo:　32℃⇒37℃ ･････ Air conditioning temperature setting with emphasis on economical operation Temperature of the under-ground (13.4℃) + α　=　18℃ depth (m) ILC

Design of Air Conditioning System Air handling Unit at the Surafce Cooling water system for air conditioning in the ML tunnel (1) Distributed Fan Coil Unit. (2) 7degree chilled water is supplied for FC (piping with 200A). (3) Chilled water is produced with Chiller unit located at the AS. Air handling Unit in Tunnel Distributed Fan-Coil Unit in RF Tunnel, no FC in accelerator tunnel.

Design of Main Dump Water Cooling System Pump and Chiller Unit in Surface Pump Unit in Tunnel

Design of RI Water Drainage System undergorund surface

Cryogenics Arrangement Design

Design of Helium Cryogenics System (1) Surface Access Tunnel Access Hall Accelerator Tunnel

Design of Helium Cryogenics System (2) Surface Facility Cold Box in Access Hall Accelerator Tunnel side Access Tunnel side

Proposals of surface facility Design

Collision Point Surface AS-0 surface Collision Point Surface Total Area 7.85 ha each zone is splittable, Area shape can be modified

Damping Ring Access Surface AS-0a surface Damping Ring Access Surface Total Area 0.66 ha each zone is splittable, Area shape can be modified

Main Linac Access Surface AS-12 surface Main Linac Access Surface Total Area 1.66 ha each zone is splittable, Area shape can be modified

Change proposals of underground facility Design

Proposal of Utility Cavern Movement at Interaction Point Considering power flow, water flow and air flow between the surface through utility shaft and the accelerator devices, location of Utility Cavern is reconsidered. Surface Facility to DR to DR Energy Flow Vertical shaft Utility Cavern to DR to DR Energy Flow tunnel to RTML to RTML Underground accelerator to ML, BDS, BD to ML, BDS, BD to DH

Proposal of Utility Cavern Movement at Interaction Point Considering power flow, water flow and air flow between utility shaft and the devices, TDR modified (two vertical shafts) Proposed design of Utility cavern Floor Area 50m x 20m = 1000 m2 Tunnel 8m x 200m =1600 m2 Floor Area 25m x 25m = 625 m2 Bypass tunnel 3m x 200m =600 m2 connection tunnel between Utility and DR Bypass tunnels between Utility and ML, DH, BDS, dumps

Proposal of Functions of Utility Cavern extension at Detector Hall 25m Extension of Detector Hall 5th Floor 3rd Floor 4th Floor 1st Floor 2nd Floor Concerns accelerator/detector effect from mechanical vibration, AC power lines effect on utility device from detector magnetic field leakage

Proposal of New Access Hall shape for Main Linac TDR Access Hall Proposal of New Access Hall shape for Main Linac direct access of Electric, Water/Air, Helium to Main Linac Tunnel. separate halls for electric, water, helium Keep enough room for cables, pipes, ducts and helium trasfer lines Hall:2998 m2 tunnel: 2010 m2 total area=5008 m2 total volume=38395m3 Proposed Access Hall go to surface １３５ｍ After cryogenics change request Hall:135m x 20m = 2700 m2 hight=13m, tunnel:2284 m2 hight=7.5m total area=4984 m2 , volume=52230m3

Proposal of pipes(He, Water and air), power cables arrangement in the access tunnel This figure shows only the required space in access tunnel for cable and rack It is not the actual installation plan Access tunnel: Required space for Piping Cable rack

Summary of Kitakami-site Utility Design and Proposals Design studies for ILC Utility specific to Kitakami-site have been done for AC power line, Water, Air-conditioning, surface area, and so on. Several new proposals are proposed, we will continue to discuss them for new change request. Cost estimation is on-going for comparison to TDR Further Design change is in consideration for more cost-down.

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