1. Project X RD&D Plan Cryogenics Arkadiy Klebaner AAC Meeting February 3, 2009

2. Page 2 AAC, February 3, 2009 – Arkadiy Klebaner Outline Description of the scope of the system Performance specification of the system Primary technical issues and the strategy to address them Open items Goals of the plan by year Role of outside collaborators

3. Page 3 AAC, February 3, 2009 – Arkadiy Klebaner System Scope Cryogenic Plant – compressors, helium refrigerators, oil removal, gas management, internal purifiers, nitrogen exchanger, valve boxes, plant controls, etc. Cryogenic Distribution System – feed boxes, bayonet boxes, feed caps, end caps, cryogenic transfer lines, headers, over pressure protection devices, cryogenic load instrumentation, etc. Ancillary Systems – gas and liquid storage, recovery compressors, cooling towers, dryers, purification system, etc.

4. Page 4 AAC, February 3, 2009 – Arkadiy Klebaner Cryogenic Load Low Energy Linac –Superconducting Solenoids and Spoke Cavities –Components are cooled by two-phase helium High Energy Linac –Superconducting Quads and Elliptical Cavities –Components are cooled by superfluid helium Beam Screens –Screens are cooled by a cryogenic fluid

5. Page 5 AAC, February 3, 2009 – Arkadiy Klebaner Basic Scheme

6. Page 6 AAC, February 3, 2009 – Arkadiy Klebaner System Requirements Operating Parameters Operating Modes Availability Safety

7. Page 7 AAC, February 3, 2009 – Arkadiy Klebaner Operating Parameters Low Energy LinacHigh Energy LinacBeam Screens Cavity/SolenoidThermal ShieldsCavity/QuadThermal ShieldsThermal Screens Temperature, [K]4.5802.05 – 840 – 8080 – 100 Pressure, [MPa]0.130.40.003122TBD Heat Load, [W]5005,0004007509,0001,000

8. Page 8 AAC, February 3, 2009 – Arkadiy Klebaner Operating Modes Steady state –Beam ON Transient –Beam ON/OFF –RF ON/OFF –Cooldown/Warm-up –Fault Scenarios –Maintenance –Commissioning

9. Page 9 AAC, February 3, 2009 – Arkadiy Klebaner Availability Plant availability – 98% Cryogenic System availability – TBD

10. Page 10 AAC, February 3, 2009 – Arkadiy Klebaner Safety Full compliance with Fermilab ES&H requirements –Pressure vessels: ASME BPV Code or PED 97/23 –Pressure piping: ASME/ANSI B31 –Oxygen Deficiency Hazard (ODH) mitigation

11. Page 11 AAC, February 3, 2009 – Arkadiy Klebaner Technical Issues 1. Cryogenic Distribution and Segmentation 2. Capital and Operational Cost Optimization 3. Heat Load Analysis 4. Testing Infrastructure

12. Page 12 AAC, February 3, 2009 – Arkadiy Klebaner Distribution and Segmentation SCB Picture is courtesy of DESY colleagues

13. Page 13 AAC, February 3, 2009 – Arkadiy Klebaner Technical Strategy Cryogenic Segmentation (Technical Issue 1) –Study existing cryomodule thermal cycling experience –Development cryogenic process: 2K heat exchanger, steady state, transient, fault, maintenance, and commissioning scenarios –Define tunnel distribution components capacities and location –Conduct components over pressure protection study –Define cryogenic string length limits and segmentation –Develop liquid helium level control strategy –Develop tunnel ODH mitigation strategy

14. Page 14 AAC, February 3, 2009 – Arkadiy Klebaner Cryogenic Plant Photos are courtesy of LHC and SNS colleagues

15. Page 15 AAC, February 3, 2009 – Arkadiy Klebaner Technical Strategy (cont’d) Capital and Operating Cost Optimization (Technical Issue 2) –Thermal shield operating parameter optimization –Cryogenic plant cycle optimization –System lifecycle cost optimization –Study effective utilization of existing Fermilab cryogenic assets

16. Page 16 AAC, February 3, 2009 – Arkadiy Klebaner Technical Strategy (cont’d) Heat Load Analysis (Technical Issue 3) –Investigate static and dynamic loads for all components and sub systems –Define operational overcapacity and heat load estimate uncertainty factors –Fault scenarios heat flux study Excerpts from TESLA and XFEL work

17. Page 17 AAC, February 3, 2009 – Arkadiy Klebaner Technical Strategy (cont’d) Testing Infrastructure (Technical Issue 4) –Determine SRF testing requirements (type, cryogenic capacity, throughput, etc.) –Define infrastructure needs –Infrastructure optimization (location, equipment selection, etc.)

18. Page 18 AAC, February 3, 2009 – Arkadiy Klebaner Open Items Finalize External Input Requirements Cryogenic system lifecycle and reliability requirements SRF accelerating component requirement specifications Commissioning scenarios Future upgrade scenarios

19. Page 19 AAC, February 3, 2009 – Arkadiy Klebaner Goals and Timeline

20. Page 20 AAC, February 3, 2009 – Arkadiy Klebaner Collaborators TJNAF cryogenic group, in principal, has agreed to lead the Cost Optimization task and to contribute to other tasks at ~0.25 FTE/year level.

21. Page 21 AAC, February 3, 2009 – Arkadiy Klebaner Summary Project X Cryogenic System RD&D plan will lead to completion of design requirements and will optimize costs The plan is technically feasible. Technical risks deemed to be either low or medium/low. Timely resolution of the Open Items is essential to the successful execution of the plan TJNAF collaborators role requires further definition