SOW_CSS_Draft.docx

STATEMENT OF WORK

TITLE: He-3 300 mK cryostat with 10 T superconducting magnet in LHe (compatible with a 10 T System)

I. Background The National Institute of Standards and Technology (NIST) Engineering Physics Division (EPD) provides leadership in conducting research in the areas of dimensional, nanometer-scale, solid state silicon quantum devices for Quantum Information processing and Complementary Metal-Oxide Semiconductor (CMOS) technology; and nanoelectronics.

The atom-based laboratory is developing atomic scale devices based on atomically precise hydrogen lithography and selective dopant placement on large atomically flat Si (100) 2x1 reconstruction surface for both device purposes and atomic scale materials properties evaluation. Low temperature epitaxial SI overgrowth on doped Si surface is used to encapsulate devices for post UHV measurement of atomic scale 3D quantum structures. Transport measurement of atomically precise degenerately doped Phosphorus nanostructures in Si is essential to process control, device design, and materials development.

The atom-based devices project needs to procure a 300 mK low temperature, high magnetic field cryostat to facilitate measurement of atom-scale devices and related quantum properties. The system must provide a 10 T magnetic field at the sample and allowing base, unloaded sample measurement temperatures down to 300 mK via the use of liquid He3 and He4 low temperature cooling methods.

I. Scope

1. Deliver a quantity of one (1) variable temperature scanning tunneling microscope (VT-STM), inclusive of F.O.B Destination shipping, training and warranty.

2. Deliver a quantity of one (1) helium belly dewar and magnet support prepared to accept a 10 T magnet with magnet support hardware, inclusive of F.O.B Destination shipping, training and warranty.

3. Deliver a quantity of one (1) 10 T Superconducting Magnet with 2.0” Vertical Bore, inclusive of F.O.B Destination shipping, training and warranty.

4. Deliver a quantity of one (1) integrated superconducting magnet power supply, inclusive of F.O.B Destination shipping, training and warranty.

II. Minimum Requirements The Contractor shall provide a He3 300mK Cryostat which shall meet the minimum requirements identified below. All items must be new. Used or remanufactured equipment will not be considered for award. Experimental, prototype, or custom items will not be considered. The use of “gray market” components not authorized for sale in the U.S. by the Contractor is not acceptable. All line items shall be shipped in the original manufacturer’s packaging and include all original documentation and software, when applicable.

Line Item 0001: He-3 300 mK cryostat Description: He-3 300mK Cryostat with 10 T superconducting magnet in LHe, (compatible with a 10 T System) Quantity: One (1) A. System Requirements:

1. Base temperature shall be a minimum of 300mK OR lower (1K mode); AND 350mK or LOWER (4k mode) with no additional heat load.

2. Holding time at base temperature shall be 100 hours minimum (1K mode); AND 40 hours minimum (4K mode).

3. Available sample space without rotating sample holder shall be typical 1.5” minimum in diameter and 2-inch minimum sample area height.

4. The He-3 insert shall have separate sippers for the charcoal sorb and the 1K pot. This feature makes the He-3 pot temperature more stable. There must be the option to not pump the 1K pot after the system reaches base temperature (i.e. the system is operated in a 4K pot mode). In this mode the base temperature must be at least 330 mK with a holding time of 35 hours. This feature shall make the system operate with no instrument induces vibration.

5. The 1K pot shall have an acoustic noise reducer installed to reduce He-3 cryostat vibrations for use when the 1K pot is being pumped.

B. Design Requirements:

1. System shall use a top flange insert that includes radiation baffles and pumping ports.

2. The He-3 insert shall have separate sippers for the charcoal sorb and the 1K pot. This attribute is intended to make the He-3 pot temperature more stable.

3. Shall have a charcoal sorption pump and heater.

4. Vacuum shall be insulated with cooling line on the charcoal sorption pump. so that the He-3 insert will still work with helium levels less than full.

5. Shall have a charcoal cooling line control valve with flow gauge.

6. Shall have a 1K pot with 1K pot acoustic noise reducer installed inside.

7. Shall have a vacuum insulated cryogenic operation needle valve for 1K pot so that the He-3 insert will still work with helium level less than full;

8. Shall have a demountable split 1K cold plate made of gold plated OFHC copper.

9. Shall have a generic silicon diode thermometer on the 1K pot with standard calibration.

10. Shall have a1K pot pumping port with pressure relief valve.

11. Shall have a He-3 pot.

12. Shall have a He-3 pot heater.

13. Shall have a generic RuO2 thermometer on He-3 pot with standard calibration.

14. Shall have a stainless steel He-3 gas storage vessel with vacuum/pressure compound gauge.

15. Shall have a minimum of six (6) NTP liters He-3 gas or more as needed to meet minimum temperature specifications and holding times. NOTE – the cost of He-3 gas shall be included in the total price offered

16. Shall have an indium sealed inner vacuum chamber (IVC) can.

17. Shall have a copper jacket around the IVC can to keep the IVC flange cold when the liquid helium level is low.

18. Shall have an isolation valve installed on the IVC pumping port.

19. Shall have an IVC pump out port with wiring manifold.

20. Shall have an IVC tail to fit the magnet bore.

C. Wiring Requirements:

1. Shall have two (2) hermetically sealed 32-pin electrical feedthroughs installed on the wiring manifold.

2. Feedthrough-1 shall be used for heaters and thermometers.

3. Shall have 32 x 0.005” diameter insulated manganin wires (in 16 x twisted pairs); which shall be installed on Feedthrough-2.

4. All wires shall be thermally anchored at the bottom of IVC flange (4.2K anchor) and 1K pot (1.5K anchor), then terminated at approximately 18.0” below the He-3 pot (but do not touch the He-3 pot).

5. Shall have one clear shot tubing (CS#1) with minimum 16mm inner diameter installed between the He-3 insert top flange and the IVC flange for coaxial cables.

6. Shall have 6 x hermetically sealed double-ended SMA feedthroughs installed on top of CS#1.

7. Shall have 6 x double-ended SMA feedthroughs installed on the 1K cold plate.

8. Shall have 6 x model UT-85-BSS semi-rigid coaxial cables (beryllium copper inner, stainless outer) installed on the feedthrough with SMA mating connectors then terminated at the SMA feedthroughs on the 1K cold plate; These semi-rigid coaxial cables run from the feedthrough at CS#1 to the 1K plate. The coaxial cables shall be Micro-Coax brand name only.

9. These coaxial cables shall be thermally anchored at the bottom of IVC flange (4.2K anchor).

10. All coaxial cables shall be thermally anchored at the bottom of IVC flange (4.2K anchor) and the 1K pot cold plate (1K anchor), and terminated at SMA connectors on 1K plate.

11. The system shall come with two options for co-axial cables form the 1K cold plate to the He3 pot. The system will have flexible co-axials installed prior to delivery; Option One shall be installed prior to delivery. Options shall be:

i. Option One:

1. Included for 1K plate to He3 pot, there shall be a quantity of six (6) flexible coaxial cables, New England Wire model number N12-50F-257-0 installed on the SMA feedthrough on the 1K cold plate; These stainless-steel inner - stainless steel outer flexible coaxial cables will terminate at minimum 28” below the bottom of the He-3 pot (but do not touch the He-3 pot); OR

2. Option 1a

a. Included for 1K plate to He3 pot, there shall be a quantity of six (6) flexible coaxial cables, New England Wire model number N12-50F-257-0 or equivalent installed on the SMA feedthrough on the 1K cold plate; These coaxial cables will terminate at minimum 28” below the bottom of the He-3 pot (but do not touch the He-3 pot); New England Wire N12-50F-257-0 stainless steel inner - stainless steel outer flexible coaxial cables equivalent specs are:

i. Impedance: 51.6 +/- 5 ohm

ii. Inner conductor: 38 AWG 17/50 type of 316L stainless steel;

iii. Dielectric: 0.004" clear FEP to 0.013" +/- 0.001" o.d.;

iv. Outer conductor: 44 awg type 316L stainless steel braided shield, 90% minimum coverage;

v. Max operating voltage: 200 VAC, Break-down voltage: 5,600 Vrms Nom, 8,000 VDC Nom

vi. Attenuation Values:

vii. 1 MHz: 230 dB/100’

viii. 10 MHz: 318 dB/100’

ix. 100 MHz: 396 dB/100’

x. 500 MHz: 588 dB/100’

ii. Option Two:

1. Included for 1K plate to He3 pot, there shall be a quantity of six (6) semi-rigid coaxial cables, Micro-Coax model UT-085SS-SS, (stainless steel inner and outer coaxial metals) that can be installed on the SMA feedthrough on the 1K cold plate; These coaxial cables will terminate below the bottom of the He-3 pot (but do not touch the He-3 pot) with adequate length to connect to sample holder; bottom of the He-3 pot (but do not touch the He-3 pot);

12. The outer conductors of the coaxial cables shall be electrically grounded to the cryostat.

13. Shall have a second clear shot tubing (CS#2) with a minimum 16mm inner diameter installed between the He-3 insert top flange and the IVC flange for customer’s additional wiring.

D. Complete temperature specifications:

1. Shall be no user’s wires and flexible coaxial cables terminated on the He-3 pot; base temperature and holding time at base temperature shall be:

i. Base temperature:

1. 300mK or lower (1K mode)

2. 325mK or lower (4K mode)

ii. Holding time at base temperature

1. 100 hours minimum (1K mode)

2. 4o hours minimum (4K mode)

2. Shall have user’s wires (but not flexible coaxial cables) terminated on the He-3 pot; base temperature and holding time at base temperature shall be:

i. Base temperature:

1. 315mK or lower (1K mode)

2. 330mK or lower (4K mode)

ii. Holding time at base temperature:

1. 50 hours minimum (1K mode)

2. 30 hours minimum (4K mode)

3. Shall have both user’s wires and flexible coaxial cables terminated on the He-3 pot; base temperature and holding time at base temperature shall be:

i. Base temperature

1. 330 mK or lower (1K mode)

2. 350 mK or lower (4K mode)

ii. Holding time at base temperature:

1. 24 hours minimum (1K mode)

2. 16 hours minimum (4K mode)

4. Shall have both user’s wires and semi-rigid model UT-08-5S-SS coaxial cables terminated on the He-3 pot; base temperature shall be:

i. Base temperature

ii. Holding time at base temperature:

NOTE: Specifications a, b, and d must be valid and tested without any additional heat load from the experimental setup and wiring. All 4 complete temperature specifications above must be fully met as detailed in each specifications configuration. Additional He3 may be supplied at no additional cost to meet temperature specifications. All quoted specifications must be valid in earth field.

CLIN 0002: Helium Belly Description: Helium Belly Dewar and Magnet Support Prepared to Accept a 10 T Magnet with Magnet Support Hardware:

Quantity: One (1) A. System Requirements:

1. Shall have a top-loading vapor cooled helium belly dewar that burns 12 liters or less He per day with no load.

2. Shall have one (1) pair of vapor cooled brass high current leads.

3. Shall have carbon resistance thermometer installed at the bottom of the magnet.

4. Shall have a safety pressure quench relief valve.

5. Shall have a helium level sensor.

6. Shall have a liquid nitrogen fill and push-out tubing.

7. Shall have a liquid cryogen monitor.

8. Shall have a full numeric keypad with directional arrows.

9. Shall have ethernet and USB computer connectivity standard.

10. Shall have a 4-20mA and 0-10V analog output standard.

11. Shall have options for IEEE-488.2 or RS-232.

12. Shall be configurable as a single channel unit to monitor liquid helium or liquid nitrogen or have optional dual channel configuration for simultaneous monitoring.

13. Shall have a separate alarm (or refill setpoints) for each channel.

14. Shall have a sample and hold operation, burnout protection, and de-ice cycle for liquid helium level sensors.

15. Shall have a level indication in centimeters, inches, or %.

16. Shall have Free LabVIEW® drivers.

CLIN 0003: 10 T Superconducting Magnet Description: 10 T Superconducting Magnet with 2.0” Vertical Bore Quantity: One (1) A. System Requirements:

1. Shall have a solenoid configuration.

2. Shall have a 10-tesla central field (4.2K) at <100 amperes.

3. Shall have no 2.2K rating.

4. Shall have a +/- 0.1% central field homogeneity over a 10 mm DSV.

5. Shall have a minimum 2.00-inch clear bore.

6. Shall have a persistent mode switch installed.

7. Shall be fully protected against damage due to quench.

CLIN 0004: Magnet Power Supply Description: Integrated Superconducting Magnet Power Supply Quantity: One (1) A. System Requirements:

1. Shall have a single output model with output current up to ± 100 amperes at 800 watts (± 10 volts up to 80 amperes, ± 8 volts at 100 amperes).

2. Shall have 4-quadrant, true bipolar systems featuring smooth sweeps through zero.

3. Shall have automatic quench detection and protection.

4. Shall have a full color, backlit TFT liquid crystal display which clearly indicates output current, voltage, limit settings, and system status.

5. Shall have five (5) programmable sweep rate ranges.

6. Shall have a 15-foot length output cables.

7. Shall have safety interlocks for persistent switch enable/disable and changing of important magnet parameters and limits.

8. Shall have a visual confirmation of current present in leads that alerts/ reminds users of safety requirements when operating the power supply, even when line power is off.

9. Shall have a Display Resolution of: 0.1 mA, 1 mV;

10. Shall have an Output Current Setability of: 0.1 mA;

11. Shall have a Sweep Rate Resolution: 0.1 mA/sec.;

12. Shall have output protection which provides protection against damage due to quench.

13. Shall have a Persistent Switch Heater 0-125mA 0-12V.

14. Shall have an AC Input: 220-230V a.c., 50-60 Hz, 10A max;

15. Shall have an USB interface: USB 1.1/2.0 Full-Speed.

16. Shall have an IEEE-488 interface: IEEE-488.2-1992 Standard;

17. Shall have Ethernet: IEEE-802-3 10/100 BASE-T

III. Deliverables

IV. Delivery Delivery shall be F.O.B Destination and shall occur not later than (NLT) four (4) months ARO.

FOB Destination means: The contractor shall pack and mark the shipment in conformance with carrier requirements, deliver the shipment in good order and condition to the point of delivery specified in the purchase order, be responsible for any loss of and/or damage to the goods occurring before receipt and acceptance of the shipment by the consignee at the delivery point specified in the purchase order; and pay all charges to the specified point of delivery. The contractor shall deliver all Line Items to:

The National Institute of Standards and Technology 100 Bureau Drive, Building 301 Gaithersburg, MD 20899-1640

V. Inspection and Acceptance In addition to the inspection and acceptance terms articulated in 52.212-4, the Government reserves the right to perform such performance tests and evaluations as defined below to verify specified system performance. Such tests and evaluations, if performed, shall be conducted within the environment that the system is to be operated. The Contractor has the right to be present during the tests and evaluations, if performed, at the Contractor’s expense.

The technical point of contact will inspect and test the following components of the systems at the Gaithersburg, MD location.

1. He3 base temperature. The base temperature and holding time at base temperature will be tested by measuring base temperatures under no load as documented in specs and holding times will be verified through He burn off rates. The base temperature and holding time verification will be conducted with wiring as described in the complete temperature measurement specifications section.

2. High frequency coaxial cables will be tested by transmission measurements at 1 GHz for semi-rigid and 1 MHz for flexible coaxial cables.

3. 10 Tesla superconducting magnet central field (4.2K) at <100 amperes, +/- 0.1% central field homogeneity over a 10 mm DSV and the 2.00 inches clear bore magnet performance specifications will be tested by appropriate magnetic field strength measurements.

4. Output current up to ± 100 amperes at 800 watts (± 10 volts up to 80 amperes, ± 8 volts at 100 amperes). 4-quadrant, true bipolar systems featuring smooth sweeps through zero, display resolution: 0.1 mA, 1 mV, output current setability: 0.1 mA and the Sweep Rate Resolution: 0.1 mA/sec. magnet power supply performance specification will be tested by confirmation of rated current and power specs.

An extended inspection and acceptance period of sixty (60) days is required due to the complex installation (completed by NIST), time associated with installing control electronics and full sensors, and making data acquisition operational to complete specifications and acceptance testing.

A visual inspection of the system will be performed by the NIST TPOC to identify surface defects or any form of indication that the system was damaged during transport to NIST. The Government shall have sole discretion to require repair or replacement of damaged and/or nonconforming supplies at no cost to the Government. The Government at any time prior to acceptance shall reject the system due to defects and/or nonconformance. The vendor is responsible for latent defects discovered any time after final inspection. However, the extent of its liability shall be prorated over the useful life of the system

Ownership (title) of the system shall transfer to NIST upon acceptance by the Government.

The Government reserves the right to conduct on-site quality assurance testing to confirm that a given instrument(s) meets the manufacturer’s performance specifications and required minimum requirements as applicable. All Government testing will be completed within sixty (60) working days from receipt of the instrument(s) from the Contractor. Testing will begin after the system has been fully installed and base temperatures are achieved. It is anticipated that the equipment will meet all manufacturer’s specifications identified in the most recent operations and maintenance manual for each piece of equipment and the minimum requirements as applicable. The Government anticipates acceptance/rejection of the system within seven (7) working days upon the completion of testing.

VI. Training Requirements Prior to shipping the system to NIST, the contractor shall conduct a minimum of one, eight (8) hour training session for up to three (3) users. The training shall be completed at the Contractor’s facility, at no cost to the Contractor, NLT ten (10) working days after the system is completed. Training shall be held on a Monday – Friday during the hours of 8am – 6pm, EST. The training shall provide a thorough demonstration of all system/solution functions, maintenance, data administration, and basic troubleshooting. The Contractor shall provide NIST staff with any applicable travel and facility access requirements ten (10) working days prior to the scheduled training date.

VII. Warranty The contractor shall warrant the entire system for a period of a minimum of 12 months year after receipt of the equipment and shall be in accordance with terms in FAR 52.212-4. Warranty shall commence upon acceptance of the system by the Government.

VIII. Payment Schedule The Contractor shall be paid, in accordance with Net 30-day payment terms, upon receipt and acceptance of a proper invoice, in accordance with the following schedule:

1. 100% after installation and acceptance by the TPOC of fully installed system, AND

2. After the successful completion of the testing requirements set forth in this document under section “VI. Inspection and acceptance” set forth in this document, AND

3. After successful demonstration by the system that it performs IAW the technical requirements set forth in this document under section “ III. Minimum Requirements”, AND

4. After receiving a properly submitted invoice, IAW the purchase order terms and conditions.

NOTE: Partial shipments and partial invoices will not be accepted, unless other-wise requested and accepted by the Contracting Officer prior to award offer. Proposed payment schedules shall be submitted with vendor’s response to the RFQ for consideration.