# ORNL High Flux Isotope Reactor GP-SANS Polarizer

Canonical: https://abierto.us/opportunities/pr449089

- Solicitation number: PR449089
- Notice type: Solicitation
- Status: Closed. Deadline was August 3, 2026 at 5:00 PM EDT
- Department: Department of Energy
- Contracting office: ORNL Ut-Battelle LLC-DOE Contractor (899042)
- NAICS: 334516 Analytical Laboratory Instrument Manufacturing
- Product or service code: 6640 Laboratory Equipment and Supplies
- Place of performance: Oak Ridge, Tennessee
- First posted: July 8, 2026
- Last posted: July 27, 2026
- SAM.gov: https://sam.gov/workspace/contract/opp/5a978b00e8ad42969c610578302ed756/view

## Description

**AMENDMENT 03:**

**ADDS:** Attachment H – Q and A to Offerors AMENDMENT 02: Extends Date Offers Due to 08/03/2026. The High Flux Isotope Reactor (HFIR) at Oak Ridge National Laboratory (ORNL) is a high-flux research reactor that, in addition to isotope production, serves as a steady-state neutron source for a suite of neutron scattering instruments. Among these, the General-Purpose Small-Angle Neutron Scattering (GP-SANS) instrument is being upgraded to incorporate incident beam polarization capabilities.

This enhancement will enable spin-resolved SANS measurements, allowing for the separation of nuclear and magnetic scattering components and facilitating studies of magnetic order, spin textures, and correlated spin structures. A critical component of this upgrade is the integration of a polarizing cavity, which utilizes magnetized supermirrors or transmission-based polarizers to produce a beam of neutrons in a well-defined spin state prior to their interaction with the sample.

This capability is essential for conducting polarization analysis and advanced techniques such as polarization contrast measurements and vector-magnetic SANS. This specification defines requirements for materials of construction, fabrication, inspection, and delivery to the Company of a complete polarizing cavity and magnetic housing assembly. The polarizing cavity and magnetic housing assembly shall be installed at the GP-SANS instrument.

## Publications

- July 8, 2026: Solicitation, due July 24, 2026 at 5:00 PM EDT. Notice 404a536dca674dc48d4ad3efc8b6db74. https://sam.gov/workspace/contract/opp/404a536dca674dc48d4ad3efc8b6db74/view
- July 8, 2026: Solicitation, due July 24, 2026 at 5:00 PM EDT. Notice c53d3b0a25414c82a71f9b54fcfb2c8b. https://sam.gov/workspace/contract/opp/c53d3b0a25414c82a71f9b54fcfb2c8b/view
- July 14, 2026: Solicitation, due August 3, 2026 at 5:00 PM EDT. Notice 3e8a193717c34205b9383ed9308e0524. https://sam.gov/workspace/contract/opp/3e8a193717c34205b9383ed9308e0524/view
- July 14, 2026: Solicitation, due August 3, 2026 at 5:00 PM EDT. Notice dc392e28105f4d1cb6eb7dc645f2acdf. https://sam.gov/workspace/contract/opp/dc392e28105f4d1cb6eb7dc645f2acdf/view
- July 27, 2026: Solicitation, due August 3, 2026 at 5:00 PM EDT. Notice 397940e2530342ddabd0543c61218ba7. https://sam.gov/workspace/contract/opp/397940e2530342ddabd0543c61218ba7/view
- July 27, 2026: Solicitation, due August 3, 2026 at 5:00 PM EDT. Notice 5a978b00e8ad42969c610578302ed756. https://sam.gov/workspace/contract/opp/5a978b00e8ad42969c610578302ed756/view

## Points of contact

- Bill Mitchum, mitchumwc@ornl.gov, 865-341-2745
- Markus Camfield, camfieldma@ornl.gov, 865-241-6119

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Source: SAM.gov Contract Opportunities bulk extract. Confirm deadlines on SAM.gov before responding. Cite https://abierto.us/opportunities/pr449089.