Tender Details

Country: USA
Summary: Mechanical Cryocooler System for the NIST Primary Optical Watt Radiometer (POWR)
UST Ref No: 123904835
Deadline: 05 Aug 2025
Financier: Self Financed
Purchaser Ownership: Government
Tender Value: Refer Document
Notice Type: Tender
Document Ref. No.: NIST-SS25-70
Purchaser's Detail:
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Description:
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-...
Documents:

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

The COMMERCE, DEPARTMENT OF | NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY, a Government sector organization in USA, has announced a new tender for Mechanical Cryocooler System for the NIST Primary Optical Watt Radiometer (POWR). This tender is published on USARFP under UST Ref No: 123904835 and is categorized as a Tender. Interested and eligible suppliers are invited to participate by reviewing the tender documents and submitting their bids before the deadline on 2025-08-05.

The estimated tender value is Refer Document, and full details, including technical specifications and submission requirements, are provided in the official tender documents. Ensure all submissions meet the criteria outlined to be considered for evaluation.