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Proton Driver Cryogenics

Proton Driver Cryogenics. Jay Theilacker March 15 , 2005. Outline. Cryogenic Design Scope Heat Load and Capacity Requirements Design Concept Technical Feasibility Cost Estimate Conclusions. Cryogenic Design Scope. Cryogenic Plant Cryogenic Distribution System Ancillary Systems.

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Proton Driver Cryogenics

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  1. Proton Driver Cryogenics Jay Theilacker March 15 , 2005

  2. Outline • Cryogenic Design Scope • Heat Load and Capacity Requirements • Design Concept • Technical Feasibility • Cost Estimate • Conclusions Theilacker - Proton Driver Director's Review

  3. Cryogenic Design Scope • Cryogenic Plant • Cryogenic Distribution System • Ancillary Systems Theilacker - Proton Driver Director's Review

  4. Cryogenic Plant • Warm Compressors • 4K Cold Box • 2K Cold Box • Cold Compressors • Controls • Installation Contracts Theilacker - Proton Driver Director's Review

  5. LN2 Storage Gas Helium Storage LHe Storage Cryogenic Plant 1.5 kW @ 2K Distribution Feed Box Upstream string Downstream string 4 K 2 K 1 1-spoke CM 2 2-spoke CM 6 3-spoke CM 6 Hi β CM 9 TESLA CM 9 TESLA CM 9 TESLA CM 9 TESLA CM WRF Solenoids Spoke Option Theilacker - Proton Driver Director's Review

  6. Cryogenic Distribution System • Low pressure cryogenic transfer line • High pressure cryogenic transfer line • Bayonet cans • Expansion boxes • Upstream string feed box and end caps • Downstream string feed box and end caps • Gas helium header Theilacker - Proton Driver Director's Review

  7. Ancillary Systems • Cooling towers • Helium gas storage • Helium and nitrogen liquid storage • Helium purifier • Recovery compressors • Miscellaneous ( arc cells, hydrometers, instrument air, etc) Theilacker - Proton Driver Director's Review

  8. Cryogenic Components Spoke Option • 25 warm RF section solenoids • 30 spoke CM solenoids • 86 spoke resonators • 336 elliptical cavities • Cryogenic distribution system • Temperature levels – 2K, 4K, 5-8K and 40-80K Theilacker - Proton Driver Director's Review

  9. Heat Load • Estimated total heat load: 0.2 kW (static) + 0.5 kW (dynamic) = 0.7 kW @ 2K 1.1 kW (static) + 0.1 kW (dynamic) = 1.1 kW @ 4K 0.6 kW (static) + 0.3 kW (dynamic) = 0.9 kW @ 5-8K 4.3 kW (static) + 6.1 kW (dynamic) = 10.4 kW @ 40-80K • Static to the total heat load at 2K is 26% • Heat load uncertainty factor is 30% • Over capacity is 50% Theilacker - Proton Driver Director's Review

  10. Equivalent to 8.6 kW @4K Plant Performance Requirements • Plant installed capacity: • 1.5 kW @ 2K • 2.5 kW @ 4K • 2.1 kW @ 5-8K • 25.1 kW @ 40-80K • Plant installed power - 2.1 MW • COP’s • 588 W/W @ 2K • 240 W/W @ 4.5K • 168 W/W @ 5-8K • 17 W/W @ 40-80K • Good partial load efficiency Theilacker - Proton Driver Director's Review

  11. Design Concept • Cryogenic Plant • Hybrid plant • Cryogenic Distribution System • Cryogenic Unit Up to 9 cryo modules • Two strings Upstream String at 4K – One cryo unit Downstream String at 2K – Five cryo units • Ancillary Systems • Industrially available components Theilacker - Proton Driver Director's Review

  12. Technical Feasibility • Cryogenic Plant • All major components of the Proton Driver helium refrigerators have been used successfully in similar systems before – LHC, SNS, CEBAF, etc. • Cryogenic Distribution System • Design of cryogenic distribution system components has low technical risk • Ancillary System • All elements are commercially available Theilacker - Proton Driver Director's Review

  13. Design Issues • Refine Heat Load Requirements • Efficient Partial Load Operation • Long Strings Of Cryogenic Modules • Schedule and Resources Theilacker - Proton Driver Director's Review

  14. Cost Estimate • Cost model based on the LHC methodology • Model was verified against SNS actual cost • Ancillary systems - based on the actual costs Theilacker - Proton Driver Director's Review

  15. Conclusions • PD cryogenic system is technically feasible • PD cryogenic system is financially predicable. Cost estimate is consistent with SNS actual cost, LHC project methodology, TESLA TDR, and US LCSG cost estimate approach • Technical and cost risks are deemed to be either low or medium/low • Design of new cryogenic distribution components has low technical risk • Proton Driver R&D at SMTF will assist to improve heat load requirements and optimize cost Theilacker - Proton Driver Director's Review

  16. Reference Material Follows

  17. Cryogenic Unit Theilacker - Proton Driver Director's Review

  18. Heat Load – Spoke Option Theilacker - Proton Driver Director's Review

  19. Refrigerator Capacity Theilacker - Proton Driver Director's Review

  20. Refrigeration Technology Theilacker - Proton Driver Director's Review

  21. Cryogenic Cost Estimate Theilacker - Proton Driver Director's Review

  22. Cryogenic Cost Estimate Notes • Notes • Ancillary equipment • No G&A is included • No contingency is included • € to $ Exchange rate is 1.3 • Cost of the Linac Instrumentation and Controls is not included • Costs Basis • CERN - LHC • SNS • Vendor quote • DESY – TTF • AD/Cryogenic Department • Engineering judgment Theilacker - Proton Driver Director's Review

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