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Overview of Day One – 29 Feb 2016

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1 Overview of Day One – 29 Feb 2016
CFS Mini Worshop – CERN Overview of Day One – 29 Feb 2016 V Kuchler

2 CFS Mini Workshop - CERN
Overview of Day One, 29 Feb 2016 Topics of Discussion Geological Status of Alternate IP Site Impact of 1.5 km Extension of Main Linacs Main Linac Tunnel Configuration with Reduced Shield Wall Thickness to 1.5 m Cryomodule Transport with New Access Hall Configuration Review of LHC Experience with Motorized Shield Walls and Magnet Transport Demonstration of ARUP Tunnel Optimization Tool CFS Mini Workshop - CERN

3 CFS Mini Workshop - CERN
Status of Geologic Investigation at Alternate IP Site New Electrical Resistivity and P Wave Velocity Testing has Identified a New Suitable Location for the IP New Testing has Also Identified Potential for Fissures at the Existing IP Location New Soil Boring Confirms Adequacy of the Granite Bedrock Proposal to Move the Horizontal Access Halls to the West Side (Damping Ring) of the Main Linac Tunnel Alternative IP Site Offers Improved Surface Topography for IP Surface Requirements CFS Mini Workshop - CERN

4 CFS Mini Workshop - CERN
T Sanuki CFS Mini Workshop - CERN

5 CFS Mini Workshop - CERN
Impact of 1.5 km extension to Main Linacs Adding 1.5 km to the Downstream End of the Linacs Adds 1.5 km to the Installation Process of the BDS Requires an Additional Full Cryo Plant Requires Longer Overall Construction Time Alternative May be to Distribute the 1.5 km Along the Length of the Linacs Capacity Increases by ~10% for Existing Cryo Plants Additional Cryo Plant Not Needed Linac “Gaps” Made Up of Warm Transfer Lines with Required Magnets Gap Lengths Consist of Multiples of “Short String of Cryo Modules Another Alternative Would be to Add the 1.5 km to the Start of the Linacs or Even Before the Bunch Compressors CFS Mini Workshop - CERN

6 CFS Mini Workshop - CERN
T Sanuki CFS Mini Workshop - CERN

7 CFS Mini Workshop - CERN
Linac Tunnel Configuration w/1.5 m Shield Wall Discussion of Exact Placement of Shield Wall to Optimize Both Klystron Gallery and Beam Tunnel Widths Optimization can Improve Emergency Exiting Capability and Facilitate Installation and Delivery of Replacement Equipment Investigation and Optimization of Fan Coil Drainage Piping/Path is Still Needed M Miyahara CFS Mini Workshop - CERN

8 CFS Mini Workshop - CERN
Cryomodule Transport with New Access Hall Configuration TDR Access Hall Configuration Required a Very Large Access Hall Volume Headroom Required for Large Crane and Moving Cryomodules Over the Top of the Shield Wall Shield Blocks Required to Seal Top of Beam Tunnel for Operations Alternative Access Hall Configuration (Preliminary) Shield Wall will have Movable Opening ~50 m RF Equipment will be Positioned to Accommodate Shield Wall Opening Underground Volume Required will be Greatly Reduced Tunnel Width Only Increased by 2 m Potential for Having Only One Cryomodule Access Point for Each Linac CFS Mini Workshop - CERN

9 CFS Mini Workshop - CERN
M Miyahara TDR Layout CFS Mini Workshop - CERN

10 CFS Mini Workshop - CERN
Review of LHC Experience with Motorized Shield Walls and Magnet Transport CFS Mini Workshop - CERN

11 Demonstration of ARUP Tunnel Optimization Tool - Y Loo (ARUP)
CFS Mini Workshop - CERN


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