Dilution Refrigerator Systems

Oak Ridge National Laboratory (ORNL), managed by UT-Battelle, LLC for the Department of Energy, seeks a dilution refrigerator system, consisting of a Gas Handling System Refrigerator and two identical He3/He4 dilution inserts, for its Neutron Scattering Division, with offers due November 16, 2026 at 5 p.m. EST under Amendment 01. No set-aside is used. Award is firm fixed price to the lowest-priced offeror that is responsive, responsible, and technically acceptable under a Lowest Price Technically Acceptable (LPTA) basis, and technical acceptability requires providing the requested materials per Attachment A specifications with no exceptions, demonstrating compatibility with ORNL's current host systems, and meeting delivery within 12 months after receipt of order.

Place of performance is Oak Ridge, TN 37830. The period of performance is twelve months after receipt of order. Attachment A specifies a base temperature of 30 mK, cooling power of 40 W at 100 mK, cooldown to base within 2 hours, and temperature control from 30 mK to 1.5 K with 5% stability. The system includes a sliding seal with ISO NW50 flanges for host cryomagnets with 35 mm bores and liquid helium refrigerators with 45 mm bores, two 28 mm inner-diameter sealed vacuum cans for magnet compatibility, an optional pair with 45 mm inner diameters, a Lakeshore 372 controller, and 30-foot stainless-steel flexible hoses. The GHS tower must not exceed approximately 24 to 32 inches wide, 32 to 42 inches deep, and 76 inches tall. Factory testing and seller-site inspection are required, with 30 days' notice to the Company before inspection and proof testing. Calibration certification with SI traceability and ILAC MRA accreditation accompanies each system.

Amendment 01 extends the offer due date and adds Attachment L, a Q&A answering an October 21, 2026 question on integration with cryomagnets from Cryogenic LTD and Scientific Magnetics (Space Cryomagnetics Ltd.) and a liquid helium refrigerator from AS Scientific Products LTD. Proposals require technical (not exceeding 10 pages excluding resumes), cost, exceptions, and conditions/assumptions sections, plus representations and certifications for offers exceeding $15,000. NAICS is 334516 with a 1,000-employee size standard. Procurement officer Bill Mitchum can be reached at mitchumwc@ornl.gov or (865) 341-2745.