FA700026Q0055_Q-A.pdf
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- Solicitation number
- FA700026Q0055
About this file
This is a Questions and Answers document for federal contract opportunity FA700026Q0055 addressing an Electron Paramagnetic Resonance (EPR) Spectrometer System Components procurement.
The Q&A clarifies the customer's existing equipment and requirements for vendor proposals. The customer already possesses a magnet and Cryomagnetics 4G-100 power supply, eliminating the need for vendors to quote these items. The magnet is a 5 Tesla superconducting solenoid with approximately 66,000 turns, 60 ampere capacity, 14 cm length, and 9 cm inner diameter, with quench protection and a Cernox temperature sensor installed. Vendors should assume the customer does not have a Hall probe field controller and does not require one. The customer has cooling water infrastructure available in the building. The existing resonator is a Bridge12 XMP-4.0 model (S/N 001), which vendors must interface with for their spectrometer system components. The magnet specifications cannot be fully detailed until CryoIndustries confirms additional technical information, though the provided specifications are described as representative of a fairly generic superconducting magnet solenoid suitable for vendor planning purposes.
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FA700026Q0055: Electron Paramagnetic Resonance (EPR) Spectrometer System Components
Questions/Answers
Q1. Electromagnet & Controller: Do we need to quote an electromagnet system (magnet/power supply) and a Hall probe field controller, or does the customer already have these for us to interface with our spectrometer?
A1. We do not need a quote for an electromagnet system, not magnet nor power supply, as we already have a magnet and its power supply. I cannot tell whether our system has a Hall probe field controller. I think we do not have a Hall probe field controller. I need to confirm that with the CryoIndustries people. However the vendors can proceed with the assumption that we do not have a Hall probe field controller, and also that we do not need one.
Q2. Facility Infrastructure: If we need to supply the electromagnet and power supply, is there cooling water infrastructure available in the building?
A2. The vendors do not need to supply the electromagnet and power supply. However we do have cooling water infrastructure available in the building.
Q3. Existing Magnet System: If the customer already has a magnet system, what exact type of magnet, power supply, and field controller are they currently using?
A3. We already have a magnet and power supply. We do not have a field controller.
The magnet is hidden inside the cryostat and I cannot see it. I cannot find a model number for it, and I have to wait for CryoIndustries to reappear before I can find that out. I am not sure if it even has a model number; it may be something made in house at CryoIndustries. However it is a 5 T superconducting solenoid magnet of about 66000 turns, taking 60 A, with length about 14 cm, ID about 9 cm. Given the above numbers, I calculated L = about 240 H. Its R at 300 K is 36.5
Ohms. I believe this can be taken to be a fairly generic superconducting magnet solenoid. It has quench protection installed, and also a Cernox temperature sensor installed.
The magnet power supply is a Cryomagnetics 4G-100 model.
Q4. Existing Resonator: What is the exact model of the Bruker resonator the customer currently has?
A4. We have a Bridge12 XMP-4.0 S/N 001 model Bruker resonator. ("Bridge12" is the brand name; "12" is not part of the model number.)
File details come from the government source that posted it. Updated .