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ICR magnets
FT-ICR MS* is well-known as a superior Mass Spectroscopy technique in terms of resolving power for mass resolution and accuracy, sensitivity, upper mass limit and dynamic range, thanks to the benefits of high-field superconducting magnet technology.
( *Fourier Transform Ion Cyclotron Resonance Mass Spectroscopy )
Oxford Instruments NanoScience offers a tested and proven range of superconducting magnets for easy integration into FT-ICR mass spectroscopy system equipment.
Standard Features
High-field magnets for optimum mass resolving power and speed.
· High magnet homogeneity and stability for achieving “ppm” mass accuracy.
· Large magnet bore diameter for better FT-ICR performance in upper mass limit and dynamic range.
· Short magnet bore length for optimum UHV (ultra high vacuum) environment.
· Low magnet stray field for minimum interaction between the actively shielded FT-ICR magnet and vacuum pumps.
· Compact overall magnet footprint for easy integration with system equipment and minimum labspace requirements.
Particular Oxford Instruments NanoScience FT-ICR magnet technology includes :
· Standard 7 Tesla and 12 Tesla FT-ICR superconducting magnets
· Standard room temperature magnet bore diameter of 98 mm
· UHV bore tube expertise and products
· Design consultancy for even higher field magnets
Magnet system specifications for our standard FT-ICR magnet products:
| Magnet system specification | ICR 7T | ICR 12T |
| Central field(T) | 7.0 | 12.0 |
| Bore tube size(mm) | 98 | 98 |
| Bore tube length(mm) | <965 | <1416 |
| Central field location1(mm) | 440 | 620 |
| Magnetic field stability ppb/hr) | <50 | <20 |
| Magnet homogeneity-axial2 | +/- 3.75 | +/- 3.0 |
| Magnet homogeneity-radial3 | +/- 10.0 | +/- 10.0 |
| Helium hold time(days) | 90 | 90 |
| Nitrogen hold time (days) | 14 | 14 |
| UHV pressure(mbar) | n/a | 10-9 |
| Stray field(Gauss) | <555 | <206 |
| System weight including cryogens(kg) | <800 | <1600 |
1. from cryostat end
2. over 80mm length(on-axis)
3. over a cylinder of 50mm diameter and 80mm length
4. over an annular region between 150 and 200 mm radius and between 100 and 150 mm from the cryostat end.
5. over an annular region between 90 and 270 mm radius, 18mm from the cryostat end.
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