| Zugriffsnummer | 23375 |
| Dokumenttyp | Konferenzartikel in Zeitschrift |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | Improving the stability of cryogenic current comparator setups |
| Autor(in); Institution |
Drung, Dietmar; 7.5, Kryo- und Vakuumphysik, PTB-Berlin
Götz, Martin; 2.6, Elektrische Quantenmetrologie, PTB-Braunschweig
Pesel, Eckart; 2.6, Elektrische Quantenmetrologie, PTB-Braunschweig
Storm, Jan-Hendrik; 7.5, Kryo- und Vakuumphysik, PTB-Berlin
Aßmann, Cornelia; 7.5, Kryo- und Vakuumphysik, PTB-Berlin
Peters, Margret; 7.5, Kryo- und Vakuumphysik, PTB-Berlin
Schurig, Thomas; 7.5, Kryo- und Vakuumphysik, PTB-Berlin
|
| Quelle/Jahr | Superconductor Science and Technology: 22 (2009), 11, 8 S. |
| ISSN | 0953-2048 (PRINT) ; 1361-6668 (ONLINE) |
| DOI | |
| Verlag | Bristol [u.a.]: IOP Publ. |
| Konferenzangaben | The 12th International Superconductive Electronics Conference 2009 (ISEC 2009), Fukuoka, 16-19, June, 2009, Japan |
| Klassifikationscode | PACS: 85.25.Dq ; PACS: 06.20.fb |
| Zusammenfassung | We have realized an improved resistance calibration setup based on a cryogenic current comparator (CCC). The comparator with 18 windings and 4647 turns in total is wellsuited for all the necessary comparisons of a 100 W standard resistor with the quantum Hall effect and inside the range of standard resistance values from 1 Ω to 1 M Ω . The new stateof-the-art setup is equipped with a low-noise dc SQUID and a digital double current source. Proper damping of the CCC resonance, careful electronics design (“box-in-box”) and application of internal wideband feedback (IWF) to the SQUID sensor improve the dynamic stability considerably and lower the overall measurement time compared to our previous setup. |
