Proton driver cryogenics
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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

Proton Driver Cryogenics

Jay Theilacker

March 15 , 2005


Outline

Outline

  • Cryogenic Design Scope

  • Heat Load and Capacity Requirements

  • Design Concept

  • Technical Feasibility

  • Cost Estimate

  • Conclusions

Theilacker - Proton Driver Director's Review


Cryogenic design scope

Cryogenic Design Scope

  • Cryogenic Plant

  • Cryogenic Distribution System

  • Ancillary Systems

Theilacker - Proton Driver Director's Review


Cryogenic plant

Cryogenic Plant

  • Warm Compressors

  • 4K Cold Box

  • 2K Cold Box

  • Cold Compressors

  • Controls

  • Installation Contracts

Theilacker - Proton Driver Director's Review


Spoke option

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


Cryogenic distribution system

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


Ancillary systems

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


Cryogenic components

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


Heat load

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


Plant performance requirements

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


Design concept

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


Technical feasibility

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


Design issues

Design Issues

  • Refine Heat Load Requirements

  • Efficient Partial Load Operation

  • Long Strings Of Cryogenic Modules

  • Schedule and Resources

Theilacker - Proton Driver Director's Review


Cost estimate

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


Conclusions

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


Proton driver cryogenics

Reference Material Follows


Cryogenic unit

Cryogenic Unit

Theilacker - Proton Driver Director's Review


Heat load spoke option

Heat Load – Spoke Option

Theilacker - Proton Driver Director's Review


Refrigerator capacity

Refrigerator Capacity

Theilacker - Proton Driver Director's Review


Refrigeration technology

Refrigeration Technology

Theilacker - Proton Driver Director's Review


Cryogenic cost estimate

Cryogenic Cost Estimate

Theilacker - Proton Driver Director's Review


Cryogenic cost estimate notes

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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