Mechanical Cryocooler System for the NIST Primary Optical Watt Radiometer (POWR) Tender

Procurement Summary

Country: USA

Summary: Mechanical Cryocooler System for the NIST Primary Optical Watt Radiometer (POWR)

Deadline: 05 Aug 2025

Other Information

Notice Type: Tender

TOT Ref.No.: 123904835

Document Ref. No.: NIST-SS25-70

Financier: Self Financed

Purchaser Ownership: Public

Tender Value: Refer Document

Purchaser's Detail

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Tender Details

Description

*****THIS IS A COMBINED SOURCES SOUGHT NOTICE AND NOTICE OF INTENT TO SOLE SOURCE***.



BACKGROUND



The National Institute of Standards and Technology (NIST) requires a closed-cycle mechanical cryocooler system to be used to cool its Primary Optical Watt Radiometer (POWR) to its operating cryogenic temperature of 4.2 K. POWR is an absolute cryogenic electrical substitution radiometer that serves as the Nation-s optical power reference for realization of the SI scale of optical power. It measures the optical power from a minimally diverging light source, typically a laser beam, and uses that same light source to then calibrate the responsivity and quantum efficiency of different types of detectors, typically photodiodes, which are used by other key facilities at NIST as optical power standards across the ultraviolet, visible, and infrared spectrum. POWR is currently operated in a traditional liquid helium cryostat, where it is surrounded by vacuum and cooled to 4.2 K. To alleviate concerns about the future availability of liquid helium, NIST plans to move the POWR Module from the liquid helium cryostat to a new system,



NIST is seeking information from sources that may be capable of providing a solution that will achieve the objectives described above, in addition to the following essential requirements



Contract Line-Item Number (CLIN) 0001: The Contractor shall provide one (1) mechanical cryocooler system.



The system shall meet or exceed the technical specifications 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.



Migrate a pre-existing K2-IS camera from a pre-spectrometer position of a pre-existing ETEM energy filter to a post-spectrometer position to enable direct-...
Active Contract Opportunity
Notice ID : NIST-SS25-70
Related Notice
Department/Ind. Agency : COMMERCE, DEPARTMENT OF
Sub-tier : NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY
Office: DEPT OF COMMERCE NIST
General Information
Contract Opportunity Type: Sources Sought (Original)
Original Published Date: Aug 04, 2025 01:50 pm EDT
Original Response Date: Aug 05, 2025 12:00 am EDT
Inactive Policy: 15 days after response date
Original Inactive Date: Aug 20, 2025
Initiative: None

Classification
Original Set Aside:
Product Service Code: 6640 - LABORATORY EQUIPMENT AND SUPPLIES
NAICS Code: 334516 - Analytical Laboratory Instrument Manufacturing

Place of Performance: Gaithersburg, MD 20899 USA

Documents

 Tender Notice