Project X RD&D Plan Cryogenics Arkadiy Klebaner AAC Meeting February 3, 2009.
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Transcript of Project X RD&D Plan Cryogenics Arkadiy Klebaner AAC Meeting February 3, 2009.
Project X RD&D PlanCryogenics
Arkadiy KlebanerAAC Meeting
February 3, 2009
Page 2AAC, 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
Page 3AAC, 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.
Page 4AAC, 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
Page 5AAC, February 3, 2009 – Arkadiy Klebaner
Basic Scheme
Page 6AAC, February 3, 2009 – Arkadiy Klebaner
System Requirements
• Operating Parameters• Operating Modes• Availability• Safety
Page 7AAC, February 3, 2009 – Arkadiy Klebaner
Operating Parameters
Low Energy Linac High Energy Linac Beam Screens
Cavity/Solenoid Thermal Shields Cavity/Quad Thermal Shields Thermal Screens
Temperature, [K] 4.5 80 2.0 5 – 8 40 – 80 80 – 100
Pressure, [MPa] 0.13 0.4 0.0031 2 2 TBD
Heat Load, [W] 500 5,000 400 750 9,000 1,000
Page 8AAC, 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
Page 9AAC, February 3, 2009 – Arkadiy Klebaner
Availability
• Plant availability – 98%• Cryogenic System availability – TBD
Page 10AAC, 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
Page 11AAC, February 3, 2009 – Arkadiy Klebaner
Technical Issues
1. Cryogenic Distribution and Segmentation 2. Capital and Operational Cost Optimization3. Heat Load Analysis4. Testing Infrastructure
Page 12AAC, February 3, 2009 – Arkadiy Klebaner
Distribution and Segmentation
SCB Picture is courtesy of DESY colleagues
Page 13AAC, 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
Page 14AAC, February 3, 2009 – Arkadiy Klebaner
Cryogenic Plant
Photos are courtesy of LHC and SNS colleagues
Page 15AAC, 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
Page 16AAC, 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
Page 17AAC, 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.)
Page 18AAC, 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
Page 19AAC, February 3, 2009 – Arkadiy Klebaner
Goals and Timeline
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
1.7.1. Cryogenic Distribution and Segmentation 1.7.1.1. Study existing cryomodules thermal cycling experience 1.7.1.2. Process development 1.7.1.3. Tunnel distribution components capacities and location definition1.7.1.4. Components over pressure protection study1.7.1.5. Define cryogenic string size limits and segments1.7.1.6. Liquid helium level control strategy development1.7.1.7. Development of tunnel ODH mitigation strategy 1.7.1.8. Cryogenic Instrumentation
1.7.2 Capital and Operational Cost Optimization1.7.2.1. Shields operating parameters optimization1.7.2.2. Cryogenic Plant Cycle1.7.2.3. System lifecycle cost optimization1.7.2.4. Effective utilization of existing Fermilab cryogenic assets
1.7.3 Heat Load Analysis1.7.3.1. Investigate static and dynamic loads for all components1.7.3.2. Define overcapacity and uncertainty factors1.7.3.3. Fault scenarios heat flux study
1.7.4 Testing infrastructure 1.7.4.1. Determine cryogenic testing requirements1.7.4.2. Define infrastructure needs1.7.4.3. Infrastructure optimization
DescriptionWBS
Project X Cryogenic System RD&D PlanFY09 FY10 FY11 FY12
Page 20AAC, 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.
Page 21AAC, 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