SQUID magnetometer
$1,000.00
描述
| We provide a low-temperature niobium-based SQUID magnetometer developed by SIMIT.
● Application scope: biomagnetic detection, geophysics, triaxial compensation, etc. Customized by users: A variety of SQUID magnetometers can be designed to meet different application requirements. ● Packaging design: reliable non-magnetic material packaging, such as glass fiber reinforced plastic, Shi Ying, etc. ● Working conditions: Magnetometer can be directly immersed in liquid helium. ● Signal readout: For self-made readout circuit to realize amplification and feedback, that is, to realize SQUID flux lock loop readout. |
| design:
● Based on reliable Nb/Al-AlOx/Nb josephson knot process ● Magnetometer size 10 × 10 mm2 ● Integrated heating resistor to realize magnetic flux removal |
superior performance:
● Magnetic flux noise 5 μФ 0/& radic;Hz ● magnetic field noise 2.9fT/& radic;Hz ● Magnetic field sensitivity 0.58nT/Ф 0
|
Typical parameters
| type | Type A | type B | Type C | |
| chip size (mm2) | Type A- 1: 10 × 10 | Type A- 2: 5 × 5 | 5 × 5 | 5 × 3 |
| magnetic field sensitivity (nT/Ф 0) | 0.58 | 1.8 | 1 | 69 |
| Magnetic flux noise (μФ 0/& radic;Hz) | 5 | 5 | 7 | 10 |
| Magnetic field noise (fT/& radic;Hz) | 2.9 | 9 | 7 | 690 |
| SQUID configuration | 1st order gradiometric | Multi-loop | Bare Washer | |
| inductance (pH) | 350 | 350 | 320 | 120 |
| detection coil size (mm2) | 9.4 × 9.4 | 4.7 × 4.7 | – | – |
| heating resistance (Ω) | 100 | 100 | 50 | 100 |
| critical current (μA) | 18 | 18 | 10 | 18 |
| junction parallel resistance (Ω) | 12 | 12 | 10 | 7 |
| junction capacitance (pH) | 0.45 | 0.45 | 0.45 | 0.45 |
| βL shielding coefficient | 3 | 3 | 1.6 | – |
| β c hysteresis coefficient | 1.8 | 1.8 | 0.7 | – |
| feedback coil coupling (μA/Ф 0) | 6.5 | 8.8 | 10 | 2.5 |
| turning frequency | 5 | 5 | 5 | 7 |
| energy resolution | 258 | 258 | 555 | – |
