| Autor: |
T. Schönau, Solveig Anders, M. Meyer, H.-G. Meyer, Matthias Schmelz, Ronny Stolz, Sven Linzen, V. Zakosarenko |
| Rok vydání: |
2015 |
| Předmět: |
|
| Zdroj: |
The Review of scientific instruments. 86(10) |
| ISSN: |
1089-7623 |
| Popis: |
We report on the development of a three-axis absolute vector magnetometer suited for mobile operation in the Earth's magnetic field. It is based on low critical temperature dc superconducting quantum interference devices (LTS dc SQUIDs) with sub-micrometer sized cross-type Josephson junctions and exhibits a white noise level of about 10 fT/Hz(1/2). The width of superconducting strip lines is restricted to less than 6 μm in order to avoid flux trapping during cool-down in magnetically unshielded environment. The long-term stability of the flux-to-voltage transfer coefficients of the SQUID electronics is investigated in detail and a method is presented to significantly increase their reproducibility. We further demonstrate the long-term operation of the setup in a magnetic field varying by about 200 μT amplitude without the need for recalibration. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
