600 MHz Spectrometer System

Form / Attachment / Pricing Sheet

This document provides detailed technical specifications for a 600 MHz Nuclear Magnetic Resonance (NMR) Spectrometer System required for the opportunity. Bidders must use this information to understand the specific hardware and software requirements for the proposed system.

Spectrometer Console:

• Transmitter: Minimum 3 RF channels, 12.5 ns timing resolution, 15-600 MHz frequency range, 1 GB pulse sequencer memory, 4 trigger inputs, high power RF amplifiers (500 W minimum).
• Receiver: Digitizing signals from 10-600 MHz, specific bit resolution for spectral width, gain control >60 dB, recovery time <3 ms, high power RF preamplifiers.
• Hardware Accessories: Gradient amplifier, low/high temperature equipment (77 K to 150 °C), MAS pneumatic unit, gas flow system, field lock, RF filters.
• Computer and Software: Details provided separately.

Superconducting Magnet:

• Standard Bore (54 mm), high field stability (<10 ppb/hr).
• Low loss cryostat with 365-day helium hold time.
• Small fringe field (<5 Gauss within 3 m).
• Cryogenically cooled and room temperature shim systems.
• Magnet stand, helium flow/level systems, nitrogen sensor, helium transfer line.

NMR Probes:

• Solution NMR Probe: Optimized for direct X-nuclei observation (19F to 109Ag), 1H/19F decoupling, Z-gradient, VT range -150 °C to +150 °C.
• Double Resonance X/F-H 0.7 mm CP-MAS Probe (Solid State): Max rotation frequency >= 111 kHz, X tuning range (15N to 31P), high power 1H/19F decoupling, active sample volume 0.35 ul, VT range 5 °C to 50 °C. Includes rotor test station and accessories.
• HFXY MAS Probe (Solid State): 600 MHz base module, interchangeable probe heads (1.6 mm and 2.5 mm), minimum 15 rotor assemblies for each size, low gamma tuning kit.

This document outlines the mandatory technical specifications for the 600 MHz NMR Spectrometer System. Bidders must ensure their proposed solution meets or exceeds all listed requirements for the transmitter, receiver, magnet, and NMR probes to be considered compliant. Detailed specifications for computer and software are provided separately.

Solicitation / RFP / RFQ

This document outlines the Naval Research Laboratory's (NRL) requirement for a 600 MHz Nuclear Magnetic Resonance (NMR) Spectrometer system. The system is intended for advanced studies of solids and liquids.

The core deliverable is a solid-state high field NMR Spectrometer system, including:

• A 14.0 Tesla (600 MHz) superconducting magnet system with a 54 mm Standard Bore.
• A four-channel NMR console with specific requirements for transmitters, receivers, hardware accessories, and computer/software.
• One solution NMR probe.
• Two solid-state NMR probes.

Spectrometer Console Requirements:

• Transmitter: Minimum 3 independent RF channels (15-600 MHz), precise amplitude, phase, and frequency control, high power amplifiers (500W minimum for 1H/19F and 15-242 MHz ranges).
• Receiver: Digitizing capability (15-242 MHz), quadrature detection, high digital resolution (17/19 bits), large data storage (≥8 M complex points), controllable gain and filtering.
• Hardware Accessories: Gradient controller, low and high temperature equipment (77K to 150°C), MAS pneumatic unit, gas flow system, field lock equipment, and RF filters.
• Computer and Software: Commercial workstation with specified RAM and storage, NMR data acquisition/storage, spectrometer parameter control (shims, temperature, MAS speed), automated temperature sequences, and comprehensive software for acquisition, processing, simulation, and pulse program editing. Includes latest software upgrades during warranty.

Superconducting Magnet Requirements:

• 54 mm Standard Bore.
• Field stability: <10 ppb/hr drift rate.
• Helium hold time: Approaching 1 year.

NMR Probes Requirements:

• Solution NMR Probe: Triple resonance, optimized for X-nuclei (19F to 31P range), with 1H/19F decoupling and observation. Specific Signal-to-Noise (S/N) ratios for various nuclei (1H, 19F, 13C, 31P, 15N) are detailed.
• Solid NMR Probe (High Spinning): Double resonance, optimized for X-nuclei (15N to 31P), with maximum rotation frequency ≥111 kHz. Includes specifications for line width, pulse widths, RF field, and sensitivity.
• Solid NMR Probe (Interchangeable Heads): Single base module with two probe heads (1.6 mm and 2.5 mm rotors). Features include light illumination capability, specific tuning ranges, pulse widths, S/N ratios, resolution, sample volume, VT range, and spinning frequencies.

General Requirements:

• The pulse programmer must support a list of standard NMR experiments (e.g., STMAS, MQMAS, REDOR) and meet specific memory, timing, and control specifications.
• Overall spectrometer stability over 12 hours: ≤ 0.2% reproducibility.

Not specified in this document.

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This document references additional details in attached documents for the magnet, probes, and specific experiments. Bidders should refer to these attachments for comprehensive specifications.