Att C - Technical Specification - HB2A Dry Fridge Proposal_rev1.pdf

Specification for Dry Dilution Refrigerator

February 2024

1. Proposal Summary:

This document contains the requirements for a cryogen free, bottom-loaded Dilution Refrigerator System for use at the High Flux Isotope Reactor (HFIR) in the neutron scattering user program, particularly in the POWDER (HB2A) Instrument. This compact refrigerator shall be capable of continuous operation with base temperature less than 50 mK, with a cooling power of more than 200 µW at 100 mK. Proposals will be accepted based on the requirements, standards, and drawings provided in this document and evaluated on a best value basis. The seller shall provide a proposal that includes design, design calculations and parameter estimates, materials, fabrication, control systems, documentation, cost in US Dollars, testing, inspection, and delivery.

A compliance table will be provided. On-site installation shall be quoted separately. System will be delivered “turn-key” requiring no addition equipment (other than a pump for the Insulating vacuum)

2. Scope

2.1. Herein, the term Seller shall refer to the parties responsible for providing the Bottom-Loaded Cryogen-Free Dilution Refrigerator within the scope defined below and Company shall refer to UT-Battelle, LLC, and its representatives.

2.2. The Company shall have either physical or virtual access to Seller’s site with 14 calendar day notice to inspect progress, observe assembly and tests and/or conduct QA audits of the project activity. For virtual access, Seller shall provide a portable camera, microphone and speaker.

2.3. The Seller is responsible for the design, fabrication, assembly, testing at Seller site, and shipping of the System. Testing at Company-site for final acceptance shall be performed by a Company representative using Company resources, and Seller may have an either physical or virtual access to this Company-site testing.

3. Deliverables:

These items shall be provided according to the specifications in Section 5, and subject to acceptance testing as described in Section 7:

3.1. Compact Cryogen-free Bottom -Loading Dilution Refrigerator

3.2. Pulse-Tube cryocooler and compressor

3.3. Automatic Gas Handling System (GHS)

3.4. All pumping lines, valves and vacuum gauges

3.5. Power and signal cables.

3.6. All appropriate temperature sensors, heaters, heatswitches.

3.7. Lakeshore 372 AC resistance bridge temperature controller

3.8. Instrument rack

3.9. 3He-4He mixture tank

3.10. All Associated pumps, compressors, etc. needed to run the refrigeration system

3.11. Any traps or filters required

3.12. Any lifting devices required

3.13. Documentation

3.13.1. 3D CAD model of system, including all interfaces, but excluding any propriety details. CAD

Model must be compatible with CREO or SolidWorks CAD software (via STEP file if necessary).

3.13.2. Complete engineering fabrication drawing package in electronic PDF format, excluding any propriety details.

3.13.3. User manual for all included equipment.

3.13.4. A drawing laying out the size of all associated equipment (instrument rack, pump cart, tank, etc.)

3.13.5. All documentation for lifting fixtures and relief devices used

3.13.6. A list of materials used (alloy and thickness) for all components that the neutron beam passes through (estimates for these shall be included in the proposal)

• Vacuum can

• Radiation shield(s)

• Sample window (if applicable)

3.13.7. Training on how to use the system

4. Sellers documentation and design model requirements

Documentation including drawings shall be submitted by the Seller to the Company electronically in a PDF format. The design model which includes at least envelope features shall be submitted by the Seller electronically in STEP or IGES or Company approved alternate format.

4.1. Bid documentation

4.1.1. Preliminary outline drawings showing proposed dimensions, material, connections, rigging attachments

4.1.2. Quality Assurance Manual or equivalent documentation

4.1.3. Completed bid compliance table (template in appendix A)

4.2. Preliminary design documentation to be shared with Company prior to Seller proceeding with final design

4.2.1. Preliminary design assembly and subassembly drawings

4.2.2. Preliminary Design, Fabrication and Testing Schedule

4.3. Pre-fabrication documentation to be shared with and approved by

Company prior to fabrication

4.3.1. Fabrication and inspection plan

4.3.2. Fabrication, inspection and testing schedule

4.3.3. Final design assembly and subassembly drawings

4.4. Pre-testing documentation to be shared with Company prior to testing

4.4.1. Seller-site test plans

4.5. Pre-shipping documentation to be shared with and approved by Company prior to shipping

4.5.1. Seller-site test reports

4.5.2. Inspection reports

4.5.3. Packing plan

4.5.4. Shipping plan

4.5.5. Operating instructions including handling precautions

4.5.6. Maintenance manual / requirements

4.5.7. Company-site test plans

5. Design Specifications and Requirements

5.1. Dilution Refrigerator Performance

5.1.1. Base temperature: < 50 mK.

5.1.2. Cooling power: > 200 µW at 100 mK.

5.1.3. Initial Cooldown Time: < 50 hours from room to base temperature.

5.1.4. Temperature Range: from base to 300 K.

5.1.5. Temperature Stability: below 1 K: +/- 3mK; above 1 K +/-300mK

5.1.6. Temperature Control: Mixing Chamber (MC), Still, Pulse Tube 2nd Stage (PT2)

5.1.7. Thermometry: appropriate calibrated full range sensors for all refrigerator stages (MC, Cold Plate, Still, PT stages)

5.1.8. Wiring: Cabling shall be provided for use with Temperature Controller 25 ft length

5.1.9. Hoses shall be no less than 25 ft length

5.2. Dilution Refrigerator Geometry

5.2.1. Refrigerator weight < 1600 Lbs.

5.2.2. Tailpiece, windows, and heat shields must be constructed of aluminum.

5.2.3. Tailpiece flange mount 12 x 6.8 mm I.D. through holes spaced 30° on a 325.272 mm bolt circle diameter

5.2.4. Sample position height 154.2 mm above flange bottom/sample stage

5.2.5. Thinned window (2 mm thick) 100 mm in height centered on the sample position

5.2.6. Tailpiece </= 343 mm outer diameter up to 400mm above flange bottom/sample stage

5.2.7. Refrigerator outer diameter not to exceed 724 mm between 400 mm and 1115 mm above flange bottom/sample stage

5.2.8. Maximum height of lifting hoist ring 1250 mm above flange bottom/sample stage

5.2.9. Overall height not to exceed 1485 mm

5.2.10. Inner heat shield internal diameter >/= 140 mm

5.2.11. Heat shield windows </= 1 mm thick

5.2.12. Bottom of MC 75mm above sample position

5.2.13. Inside bottom of inner heat shield >/= 150 mm below bottom of MC (75 mm below sample position)

5.2.14. Additional geometric details can be found on the attached PDF titled “DRY_DR_DIMENSIONS”

5.2.15. MC sample mounting hole pattern: 6 x M4x0.7 threaded holes spaced 60° on a 40 mm bolt circle diameter and 1 x M6x1 threaded hole on the center axis

5.2.16. Heat shields and tail pieces connect at or below 400 mm above the flange bottom/sample stage to enable one person sample changes

5.2.17. The lifting eye shall be straight above the COM

5.3. Control Software

5.3.1. Manual Controls: System can be operated (cool-down, operate, warm-up, change samples, etc.)

without a computer connection through manual valves and/or push button control

5.3.2. Software controls: Program or programs capable of monitoring and operating the system from a computer (manual cool-down from room temperature or warm up is permitted)

5.3.3. Remote interface with text based TCP/IP interface for all components (temperature controller, magnet power supply) preferred.

5.4. Miscellaneous

5.4.1. ORNL will provide on-site 3He. Do not quote 3He.

5.4.2. 5.4.3.5.4.4. The dilution refrigerator will be rotated ~400 degrees to align and change samples, so hose and cable fittings should point upward where possible

5.4.3. All seals are tested for leak tightness on a mass spectrometer to better than 1x10-8 mbar·l/sec

5.4.4. Mixture should relieve to storage tank in normal failure modes (power loss for example)

5.4.5. Mixture may relive safely to atmosphere in non-normal failure modes (catastrophic vacuum failure for example)

6. Applicable Engineering & Safety Standards

The Dilution Refrigerator System and supporting components will be built such that it satisfies all the ORNL supplied drawings and all the relevant engineering design standards listed in this section.

6.1. ORNL Supplied

6.1.1. Compliance Table

6.1.2. Physical Parameters Drawings

6.2. Industry Standards (Current revision as of contract signing)

6.2.1. ASME B30.20: Below the Hook Lifting Devices

6.2.2. ASME BTH1

6.2.3. ISO-2861: Vacuum Fittings

6.2.4. ISO-21013: Cryogenic Vessels

6.2.5. ASME BPVC

6.2.6. ASME B31.3 (Process Piping)

6.3. Electrical Standards

6.3.1. 60 Hertz

6.3.2. Voltages standard per Table 1 of ANSI C84.1-2006

6.3.3. All components must be certified UL compliant.

6.3.4. Plugs for components are to match for the following voltage and current configurations

• 15amp-125V-1Ph NEMA 5-15P

• 20amp-125V-1Ph NEMA L5-20P

• 30amp-125V-1Ph NEMA L5-30P

• 20amp-250V-1Ph NEMA L6-20P

• 20amp-208V-3Ph NEMA L18-20P

• 30amp-208V-3Ph NEMA L21-30P

• 480V Pin and sleeve plugs

6.4. Lifting devices

6.4.1. System will include appropriate lifting devices to allow transport and installation via overhead crane. Any lifting device shall follow ASME BTH-1 design.

6.4.2. System will use appropriately rated swivel hoist rings, non-magnetic components preferred.

7. Acceptance Testing

7.1. All final acceptance testing will be done on Company site by the Company unless otherwise noted. Quote shall not include Seller on-site installation, or include as an option only.

7.2. The Dilution Refrigerator System will be considered delivered & operational when the following tests are verified & accepted by the buyer.

7.2.1. On-site cool-down to the base temperature.

7.2.2. Verify initial cooling down time less than specified

7.2.3. Verification of continuous operation of refrigerator at base temperature for minimum of 24 hours.

7.2.4. Cooling power test

7.2.5. Verify operation of heaters, sensors and pressure monitors.

7.2.6. Temperature stability and control at low (<1.0 K) and high (1.0 - 300 K) temperature diapasons

7.2.7. All vacuum components shall be subjected to leak checks. Leak rate shall be <1x10-8 mbar·l/sec.

8. Shipping Requirements

8.1. The Seller is responsible for all packing and shipping provisions to ensure that the product arrives at the Company s site in an undamaged, working condition.

8.2. Equipment shall be shipped to:

Oak Ridge National Laboratory 1 Bethel Valley Road 7972 Guide Hall Bay Oak Ridge, TN 37831-6471

Appendix A: Bid Compliance Table

Seller completes this table during the solicitation phase in order to communicate to the Company the Seller s ability/intent to comply with the following specification requirements. An X will suffice in the Fully Comply & Cannot Comply columns, although expected design results or reasons for not complying are encouraged. A detailed explanation of deviation must be provided for the Comply with Exceptions column. Requirements with references 4.* are for options which the Seller may, but are not required to, quote during the solicitation process.

Specification Requirement

Specification Reference

Supplier can

FULLY

COMPLY

Suppler can COMPLY with

EXCEPTIONS

(Provide exception details)

Supplier

CANNOT

COMPLY

Base Temperature <50 mK

5.1.1

Cooling power > 200 µW at 100 mK

5.1.2

Initial Cooldown Time:

< 50 hours

5.1.3

Temperature Stability:

below 1 K: +/- 3mK;

above 1 K +/-100mK

5.1.5

Temperature Control:

MC, Still, PT2

5.1.6

OVC and Shields material requirements

Vacuum requirements 5.4.2

Acceptance Testing Requirements

Overall height not to exceed 1485 mm

5.2.8

Weight and dimensional requirements

5.2