SOW.docx

Statement of Work – QD CC Dilution Refrigerator I. Background This acquisition is requested in support of projects in the Atom Scale Device Group/Nanoscale Device Characterization Division’s (NDCD) program to develop hybrid quantum systems that leverage advanced nanoelectronics and engineered photonics. Specifically, silicon quantum dot (QD) test devices must be measured with low noise in the small voltage and small current regime. The quantum levels used for hosting quantum information are spaced by a very small amount of energy, requiring a very electrically quiet environment and cold (~10 mK) temperatures, such that these other sources of energy have minimal capacity to corrupt the quantum information.

II. Scope of Work This contract is to supply, install, and train users on one (1) cryogen free dilution refrigerator system that meets the requirements of the Atom Scale Devices Group spin qubit and color center program.

III. Minimum Requirements

Line Item 0001:

Description: Cryogen-free, dilution refrigerator Quantity: 1 Description:

The Contractor shall provide a cryogen-free, dilution refrigerator for hybrid electronic and photonics quantum development. This refrigerator shall be a closed-cycle measurement cryostat capable cooling and measuring samples at <10 mK with a cooling power at least 400 uW at 100 mK is required. The cryostat shall have (48) low frequency measurement lines (twisted pair), (9) power supply and control lines, and (8) high frequency lines with SMA connectors and be equipped with a 5 Tesla, 150 mm bore magnet system.

1. General:

a. 120/240/480 VAC 60 Hz US standard power required for system operation.

b. Compressor shall be water cooled and configured for connecting with US National Pipe Thread fittings, or equivalent adapter fittings for connection to NPT.

c. All normal operating functions and monitoring shall be able to be initiated and stopped by computer control. Some engineering controls, e.g., dump tank valve control, overpressure bypasses, etc. are excepted when their nature provides a protective value and is not part of normal processes.

d. The system shall have automated controls for cooling down and warming up, including all valve operations during the introduction, condensation, circulation, collection and safing of the 3He/4He.

e. Control software compatible with Windows 10 shall be provided for all standard functions (cooling from RT, cooling from 4K, collecting at base to return to 4K, collecting at base and warming, each of the prior with magnet, routine monitoring and logging), etc. and utilize temperature monitoring for initiating the condense phase.

f. All computer control and monitoring functions, including thermometry and supplementary heating and magnet controls, shall be remotely controlled through a Win10 computer provided by the USG connected to the system by intranet or USB.

g. The mixing chamber temperature as configured according to these specifications, shall be <10 mK. This specification must be demonstrated in factory and on-site testing.

h. As fully configured in these specs, i.e., with all wiring installed, the system shall provide >400 uW of cooling power at 100 mK. This specification must be demonstrated in factory and on-site testing.

i. The mixing chamber plate shall reach base temperature <20 mK in <24 hours without magnet, <50 hours with magnet. This specification must be demonstrated in factory and on-site testing.

j. Additional heaters and integrated power supplies shall be capable of warming the system ready to open to air in <16 hours without magnet and <30 hours with magnet. This specification must be demonstrated in factory and on-site testing.

k. All portions of the system capable of cryo-pumping atmospheric gasses in the case of leaks shall be engineered with over-pressure devices that do not require electricity or computer control. Overpressure devices must be clearly labeled and described in the provided documentation as well as inspection and maintenance procedures.

l. The system shall be engineered and built to UL, CE or other accepted standards, and statements of safety standards shall be provided in system documentation.

m. In the event of full utility outage, the contractor shall address the response of the system and how it is engineered to avoid any unsafe condition or loss of the 3He/4He mix.

2. Physical

a. A mechanical support system shall be provided, i.e., a mechanical frame that supports the system, and enables operation consistent with the factory tests. The contractor shall provide statements of maximum vibrational displacements under normal system operation and the rated mechanical load of the support.

b. Additionally, the mechanical supports (e.g., legs) must leave at least three feet in all lateral directions from the outside of the vacuum cans or other outermost surface to provide adequate space for configuring experiments and samples when the system is open.

c. The contractor shall provide a statement of the maximum rated mechanical (mass) load for each stage of the system.

d. If vacuum can or heat shield weight exceeds 30 lbs, vendor shall provide a procedure or mechanical assistance for safely operating the system.

e. The main dilution refrigerator system including the cryostat, support frame, and gas handling system shall fit within a volume smaller than 5000 mm long by 3200 mm wide by 3700 mm high. Dimensions for each of the individual components shall be provided.

f. The pulse tube compressor shall be able to be remotely located in an adjacent room at a distance exceeding 8000 mm. The government will provide all wall penetrations for this remote location.

g. The cryostat shall have a (tail) volume available for samples which exceeds 100 mm diameter by 200 mm tall.

h. A superconducting magnet system capable of producing >5 T with a bore of 150 mm shall be included and integrated to be compatible with heat shields, etc. A power supply, external and internal cabling, persistent mode switch system, and any other components required to reach 5T shall be included.

i. The dilution refrigerator system shall be of the cryogen-free type that does not utilize liquid helium. A liquid nitrogen trap for maintaining helium purity is acceptable (and preferred).

j. In addition to ports/feedthroughs provided for the required instrumentation, thermometry and pump out, at least (2) additional ports of KF40 (or larger) fitted with a common vacuum standard flange shall be provided for future use and at least one shall be “line-of-sight” to free space and passthrough on all stages for future wiring/etc to the cold plate.

k. Blanks for unused holes on the cold stages shall be included.

l. The 4K, still and MC cold plate shall be equipped with a grid of tapped holes (e.g., #10-32) with no more than 1” center to center spacing in any area not equipped with instrumentation or blank feedthroughs. Final hole configuration drawings shall be provided and approved post-award prior to manufacturing.

3. Instrumentation:

a. (48) net low frequency (LF) measurement lines (phosphor bronze) configured in (2) bundles of 24 wires, each bundle consisting of 12 twisted pairs, thermalized and anchored at each stage.

b. LF bundles will have a Fisher connector to the exterior of the cryostat.

c. Low frequency lines will have a connector (break-out) at the ~4 K stage and still plate connectorized with a Micro-D 25 pin connector, mechanically and thermally anchored to the cold plate, terminating at the mixing chamber with a Micro-D 25 pin connectors.

d. Detailed pinouts (Fisher to micro-D mapping) will be provided during design and approved by customer prior to wiring and included with the system documentation at delivery.

e. (8) SMA connectorized RF/microwave lines shall be provided with SMA bulkhead feedthroughs to the exterior of the cryostat with female SMA connectors and also at the cold plate with female SMA connectors.

f. Cryostat SMA wiring shall be 0.86 mm SCuNi-CuNi in a 50 Ohm impedance configuration

g. A separate “amplifier” power supply (PS) and/or digital control instrumentation bundle shall be provided that is kept spatially and electrically isolated from instrumentation lines with at least 9 wires, configured with a common connector standard (D shell, C-shell, etc.), with breakouts at ~4K stage, still and MC.

h. PS wiring shall have less than 20 Ohms of DC resistance

i. Thermometry and sample heater and connectors and wiring are separate from above listed instrumentation lines, but may be combined in the same bundle and connector with power supply/digital lines at vendor’s discretion

j. Calibrated thermometry for accurate monitoring of the temperatures at all stage shall be supplied and heaters for controlling measurement temperatures and facilitating expedited warm shall be provided.

k. A multi-channel resistive temperature controller shall be provided providing monitoring of all stages plus at least two additional channels wired for future use at the mixing chamber.

l. Suitable type calibrated resistive thermometers shall be provided for each stage.

m. The temperature controller shall have the ability apply power in closed loop PID mode for maintain a mixing chamber plate temperature above base temperature up to at least 500 mK.

IV. Delivery Delivery shall be FOB Destination (or equivalent terms, such as INCOTERMS Delivered Duties Paid) are required and shall occur in accordance with the table below.

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 217 Gaithersburg, MD 20899

Deliverables timeline

(if applicable)

V. Period of Performance

a. Along with the bid, the Contractor shall supply:

i. the installation manual and site requirements for installation and operation

ii. an estimate for the delivery lead time

b. The contractor shall deliver the system within 12 months of award of contract. If the lead time for delivery is less than 6 months, the Government may request delay of delivery for up to 6 months ARO, to have time to prepare the site.

c. The contractor shall provide the Government with an updated delivery estimate 4 weeks ARO.

d. The government will provide a time window for installation that will not begin earlier than 1 week after the delivery date and spanning at least 4 weeks.

e. The time period for delivery will be agreed upon by the Government and Contractor.

f. No later than 2 weeks before delivery, the Contractor shall:

i. supply a final delivery date

ii. confirm installation date

g. The time period for installation will be agreed upon by the Government and contractors.

h. The contractor shall provide a 1-year warranty after acceptance. The contractor may offer multiple warranty options to choose from, including a 2-year warranty.

VI. Place of Performance

i. All work shall be performed at: The National Institute of Standards and Technology, 100 Bureau Drive, Building 217, Gaithersburg, MD 20899

j. The government will provide access to Building 217 to the contractor during the agreed times for a preinstallation site visit and/or installation visit.

k. The day-to-day supervision and direct control over the work performed by the on-site contractor personnel shall be the sole responsibility of the contractor.

l. The contractor will need to comply with badging and security procedures required for working onsite.

VII. Site Preparation The contractor shall provide specifications for required utilities prior to installation. NIST will prepare the space and necessary utilities with appropriate connectors.

VIII. 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 performance of the cryogen-free dilution refrigerator system will be tested against some or all the specific requirements above.

The Government will test, inspect, and accept the equipment onsite within 7 business days of the installation of the cryogen-free dilution refrigerator system. A visual inspection of the He-3 dilution refrigerator system will be performed by the NIST TPOC to identify surface defects or any form of indication that the cryogen-free dilution refrigerator system was damaged during transport to NIST, as instructed by the contractor. 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 cryogen-free dilution refrigerator system due to defects and/or nonconformance.

IX. Installation

The system shall be installed by the Contractor and meet contract specifications no later than the dates provided in the deliverable table above. Installation, at a minimum, shall include uncrating/unpackaging of all equipment, rigging, set-up and hook-up of the system, demonstration of all specifications, and removal of trash. Onsite installation and demonstration shall be done at NIST, Gaithersburg, MD.

X. Training The contractor shall conduct a 1 day training session for up to 5 users at NIST. The training shall provide a thorough demonstration of all system/solution functions, maintenance, data administration, and basic troubleshooting. The training may be completed at NIST immediately after installation/set-up but shall be completed no later than 30 days after installation.

XI. Warranty The contractor shall warrant the entire system for a period of a minimum of 1 year after receipt of the equipment and shall be in accordance with terms in FAR 52.212-4 XII. 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: 50 % at the time of order, 40 % at time of delivery, 10 % on acceptance.