| Autor: |
Wandui, Albert, Bock, James J., Frez, Clifford, Hollister, M., Minutolo, Lorenzo, Nguyen, Hien, Steinbach, Bryan, Turner, Anthony, Zmuidzinas, Jonas, O'Brient, Roger |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; 7/28/2020, Vol. 128 Issue 4, p1-18, 18p, 1 Diagram, 1 Chart, 11 Graphs |
| Abstrakt: |
Thermal Kinetic-Inductance Detectors (TKIDs) combine the excellent noise performance of traditional bolometers with a radio frequency multiplexing architecture that enables the large detector counts needed for the next generation of millimeter-wave instruments. In this paper, we first discuss the expected noise sources in TKIDs and derive the limits where the phonon noise contribution dominates over the other detector noise terms: generation–recombination, amplifier, and two-level system noise. Second, we characterize aluminum TKIDs in a dark environment. We present measurements of TKID resonators with quality factors of about 10 5 at 80 mK. We also discuss the bolometer thermal conductance, heat capacity, and time constants. These were measured by the use of a resistor on the thermal island to excite the bolometers. These dark aluminum TKIDs demonstrate a noise equivalent power, NEP = 2 × 10 − 17 W / Hz , with a 1 / f knee at 0.1 Hz, which provides background noise limited performance for ground-based telescopes observing at 150 GHz. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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