Attachment 1 - PurchaseDescription.pdf
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- Solicitation number
- 75N95024Q00449
About this file
This document is a Purchase Description for a replacement Sumitomo cryocooler set required by the National Institute of Neurological Disorders and Stroke (NINDS) for an 11.7 T MRI magnet. The magnet needs to be kept at a stable low temperature of 2.2 K and the cryocoolers that cool the thermal shields must be replaced annually.
The required items include 1 Sumitomo RDK-408D2 cold head, 2 Sumitomo CH-210 cold heads, 1 Sumitomo F-70H compressor, and interconnecting parts. The cryocoolers must be the specified Sumitomo models as they are custom-built for this MRI magnet. Delivery is required by December 6, 2024 due to the 16-week lead time. This acquisition is being conducted as a total small business set-aside by the Department of Health and Human Services, National Institutes of Health, National Institute on Drug Abuse.
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Version 11-30-2016-1 FAR Part 11—Describing Agency Needs
PURCHASE DESCRIPTION
Sumitomo Cryocooler set for NIH human 11.7 T MRI magnet
1. Statement of Need and Purpose: The National Institute of Neurological Disorders and Stroke
(NINDS), Laboratory of Functional and Molecular Imaging (LFMI) is home to an ultra-high magnetic field, 11.7 T, human MRI scanner, one of the highest-field magnets with such a large bore in the world. The magnet is expected to be on field by late spring or summer 2024. Once energized, it needs to be kept at a stable low temperature of 2.2 K (-456 ºF). The magnet is filled with liquid Helium, pumped to ~50 mbar, to achieve this. To minimize the loss of liquid helium, the magnet is equipped with thermal shields that reduce the heat load to the system.
The shields themselves are cooled by cryocoolers. These are mechanical devices that need to be replaced after about a year of service. To ensure that NINDS has the replacement parts available when it needs them, it requires a set of cryocoolers (the system has three in total), along with auxiliary parts (a compressor to run them and a set of helium lines to connect them to it).
2. Background Information and Objective: The AMRI section of LFMI/NINDS develops cutting-edge hard- and software to improve Magnetic Resonance Imaging (MRI) technology and applies this to advance neuro- and functional imaging of the human brain. One of the avenues of research the lab is pursuing is MR imaging at increased magnetic field strength, which boosts sensitivity and enhances certain tissue contrasts. Typical MRI systems operate using 1-7 Tesla magnets. The NIH purchased an 11.7 Tesla magnet to investigate benefits of this increased field strength for brain imaging in humans.
3. Generic Name of Product: Spare cryocooler set for NIH human 11.7 T MRI magnet.
4. Purchase Description: This purchase is for a complete set (2x Sumitomo CH-210 and 1x Sumitomo RDK-408D2) of cold heads, 1 Sumitomo F-70H compressor, and miscellaneous interconnecting parts.
5. Salient characteristics: This magnet was custom-built for the NIH, only the specified make and model of cold head (1x Sumitomo RDK-408D2 and 2x Sumitomo CH-210) will fit this application.
6. Quantity:
- (1x) RDK-408D2 cold head (part# 265400A408D2)
- (2x) CH-210 cold head (part# 266266A)
- (1x) F-70H compressor (267046D23N)
- (1x) F-series install kit (267990A)
- (2x) Flexible He gas line – 3/4" diameter, 65' length (part# 269743B65)
Cold heads will need to be refurbished on an annual basis for a period of four years.
7. Delivery Date: December 6, 2024 (due to > 16-week lead time, order should be placed before
~August 1, 2024).
PURCHASE DESCRIPTION
File details come from the government source that posted it. Updated .