| Autor: |
Insik Jin, Frederick C. Wellstood, Gregory M. Harry, Thomas R. Stevenson, Ho Jung Paik |
| Rok vydání: |
2000 |
| Předmět: |
|
| Zdroj: |
AIP Conference Proceedings. |
| ISSN: |
0094-243X |
| DOI: |
10.1063/1.1291895 |
| Popis: |
We report on the sensitivity of a transducer which uses a low noise SQUID amplifier. The transducer is made of niobium and was electropolished and heat treated to improve the Qs. The mechanical Q was found to be 3.15×106 at 4 K and the electrical Q was 2.52×105. With a low noise SQUID designed for this transducer, the noise temperature of the transducer was found to be 1.1 mK, of which 0.7 mK was due to the SQUID. This is about 200× larger than the expected noise from the SQUID. Noise from flux trapped on the chip is the most likely cause. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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