학술논문
A dual-band millimeter-wave kinetic inductance camera for the IRAM 30-meter telescope
Document Type
Working Paper
Author
Monfardini, A.; Benoit, A.; Bideaud, A.; Swenson, L. J.; Roesch, M.; Desert, F. X.; Doyle, S.; Endo, A.; Cruciani, A.; Ade, P.; Baryshev, A. M.; Baselmans, J. J. A.; Bourrion, O.; Calvo, M.; Camus, P.; Ferrari, L.; Giordano, C.; Hoffmann, C.; Leclercq, S.; Macias-Perez, J. F.; Mauskopf, P.; Schuster, K. F.; Tucker, C.; Vescovi, C.; Yates, S. J. C.
Source
The Astrophysical Journal Supplement Series, Volume 194, Number 2, 24 (2011)
Subject
Language
Abstract
Context. The Neel IRAM KIDs Array (NIKA) is a fully-integrated measurement system based on kinetic inductance detectors (KIDs) currently being developed for millimeter wave astronomy. In a first technical run, NIKA was successfully tested in 2009 at the Institute for Millimetric Radio Astronomy (IRAM) 30-meter telescope at Pico Veleta, Spain. This prototype consisted of a 27-42 pixel camera imaging at 150 GHz. Subsequently, an improved system has been developed and tested in October 2010 at the Pico Veleta telescope. The instrument upgrades included dual-band optics allowing simultaneous imaging at 150 GHz and 220 GHz, faster sampling electronics enabling synchronous measurement of up to 112 pixels per measurement band, improved single-pixel sensitivity, and the fabrication of a sky simulator to replicate conditions present at the telescope. Results. The new dual-band NIKA was successfully tested in October 2010, performing in-line with sky simulator predictions. Initially the sources targeted during the 2009 run were re-imaged, verifying the improved system performance. An optical NEP was then calculated to be around 2 \dot 10-16 W/Hz1/2. This improvement in comparison with the 2009 run verifies that NIKA is approaching the target sensitivity for photon-noise limited ground-based detectors. Taking advantage of the larger arrays and increased sensitivity, a number of scientifically-relevant faint and extended objects were then imaged including the Galactic Center SgrB2(FIR1), the radio galaxy Cygnus A and the NGC1068 Seyfert galaxy. These targets were all observed simultaneously in the 150 GHz and 220 GHz atmospheric windows.
Comment: Submitted to ApJ (abstract reduced to fit ApJ standards)
Comment: Submitted to ApJ (abstract reduced to fit ApJ standards)