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

Project X RD&D PlanCryogenics

Arkadiy KlebanerAAC Meeting

February 3, 2009

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


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.


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


Basic Scheme


System Requirements

• Operating Parameters• Operating Modes• Availability• Safety


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


Operating Modes

• Steady state– Beam ON

• Transient– Beam ON/OFF– RF ON/OFF– Cooldown/Warm-up– Fault Scenarios– Maintenance – Commissioning


Availability

• Plant availability – 98%• Cryogenic System availability – TBD


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


Technical Issues

1. Cryogenic Distribution and Segmentation 2. Capital and Operational Cost Optimization3. Heat Load Analysis4. Testing Infrastructure


Distribution and Segmentation

SCB Picture is courtesy of DESY colleagues


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


Cryogenic Plant

Photos are courtesy of LHC and SNS colleagues


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



• 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



• Testing Infrastructure (Technical Issue 4) – Determine SRF testing requirements (type, cryogenic capacity,

throughput, etc.)– Define infrastructure needs– Infrastructure optimization (location, equipment selection, etc.)


Open Items

Finalize External Input Requirements

• Cryogenic system lifecycle and reliability requirements

• SRF accelerating component requirement specifications

• Commissioning scenarios

• Future upgrade scenarios


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


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.


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

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

Documents

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