When we apply an AC current to a superconductor, the Cooper pairs oscillate and acquire kinetic inductance, that can be measured by inserting the superconductor in a LC circuit with high merit factor. Interactions in the superconductor can break the Cooper pairs, causing sizable variations in the kinetic inductance and, thus, the response of the LC circuit. This concept is at the basis of Kinetic Inductance Detectors (KIDs). The CALDER project aims to develope high sensitivity, cryogenic light detectors using KIDs in combination with a silicon absorber to cover, via phonon mediation, an area of several cm2 [1]. This contribution focuses on the development of a low-noise, digital and analogical, electronics for the sensor's readout and on the design and testing of a new geometry for the superconductive resonator to improve detector sensitivity.
Readout Electronics for the Kinetic Inductance Detectors of CALDER
Castellano M G;Colantoni I
2018
Abstract
When we apply an AC current to a superconductor, the Cooper pairs oscillate and acquire kinetic inductance, that can be measured by inserting the superconductor in a LC circuit with high merit factor. Interactions in the superconductor can break the Cooper pairs, causing sizable variations in the kinetic inductance and, thus, the response of the LC circuit. This concept is at the basis of Kinetic Inductance Detectors (KIDs). The CALDER project aims to develope high sensitivity, cryogenic light detectors using KIDs in combination with a silicon absorber to cover, via phonon mediation, an area of several cm2 [1]. This contribution focuses on the development of a low-noise, digital and analogical, electronics for the sensor's readout and on the design and testing of a new geometry for the superconductive resonator to improve detector sensitivity.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
