Development and Characterization of KID-Based SPIAKID Instrument
Artikel i vetenskaplig tidskrift, 2026
The SpectroPhotometric Imaging in Astronomy with Kinetic Inductance Detectors (SPIAKID) instrument is designed and currently being developed to explore ultra-faint dwarf (UFD) galaxies in the optical and near-infrared bands. We envisage to install SPIAKID at the New Technology Telescope (NTT) in Chile as a guest instrument and targets a field of view of 2' × 2', which can be achieved using four 20,000-pixel arrays at the focal plane. Each array is divided into 10 subarrays, with 2,000 pixels per feedline. The superconducting kinetic inductance detector (KID) comprises a TiN/Ti/TiN trilayer meander and an Nb interdigitated capacitor. In a newly developed anti-vibration dilution cryostat, 10 readout lines were constructed utilizing 10 low-noise amplifiers (LNAs). The performance of the device is characterized using a vector network analyzer (VNA) and a homodyne scheme at various temperatures between 20 and 495 mK, producing preliminary results of pulse response and energy resolution (energy resolving power) under illumination delivered through an optical fiber at 405 nm. The measured resonant frequencies of the KIDs range from 3.8 to 8.5 GHz. The energy resolution of the resonator initially improves with increasing temperature but subsequently degrades. So far, the best measured energy resolution is 2.5 at 275 mK and 405 nm.
kinetic inductance detector
single photon
KID
SPIAKID
energy resolution
Författare
Zhaohang Peng
Observatoire de Paris
Université Paris Descartes
Faouzi Boussaha
Observatoire de Paris
Piercarlo Bonifacio
Observatoire de Paris-Meudon
Jie Hu
Chinese Academy of Sciences
Paul Nicaise
Chalmers, Mikroteknologi och nanovetenskap, Kvantteknologi
Observatoire de Paris
Chinese Academy of Sciences
Christine Chaumont
Observatoire de Paris
Florent Reix
Observatoire de Paris
Josiane Firminy
Observatoire de Paris
Elisabetta Caffau
Observatoire de Paris-Meudon
Cyril Pannetier
Observatoire de Paris
Jean Philippe Amans
Observatoire de Paris
Moustapha Dekkali
Observatoire de Paris-Meudon
Thibaut Vacelet
Observatoire de Paris-Meudon
Alexine Marret
Chinese Academy of Sciences
David Horville
Chinese Academy of Sciences
M. Piat
Université Paris Descartes
IEEE Transactions on Applied Superconductivity
1051-8223 (ISSN) 15582515 (eISSN)
Vol. In PressÄmneskategorier (SSIF 2025)
Annan elektroteknik och elektronik
Astronomi, astrofysik och kosmologi
DOI
10.1109/TASC.2026.3696967