Jiansong Gao

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We present the status of MUSIC, the MUltiwavelength Sub/millimeter Inductance Camera, a new instrument for the Caltech Submillimeter Observatory. MUSIC is designed to have a 14', diffraction-limited field-of-view instrumented with 2304 detectors in 576 spatial pixels and four spectral bands at 0.87, 1.04, 1.33, and 1.98 mm. MUSIC will be used to study dusty(More)
As conventional low-IF (intermediate frequency) receivers have the main drawback that they are more sensitive to good mirror signal suppression, a novel low-IF receiver topology that has the ability of mirror signal suppression was proposed, and analyzed. Then the proposed low-IF receiver topology was validated both by analytical method and time domain(More)
Noise performance is one of the most crucial aspects of any detector. Superconducting Microwave Kinetic Inductance Detectors (MKIDs) have an “excess” frequency noise that shows up as a small time dependent jitter of the resonance frequency characterized by the frequency noise power spectrum measured in units of Hz/Hz. Recent studies have shown that this(More)
  • Jack Sayers, Nicole G. Czakon, +17 authors Jonas Zmuidzinasc
  • 2010
We will present the design and implementation, along with calculations and some measurements of the performance, of the room-temperature and cryogenic optics for MUSIC, a new (sub)millimeter camera we are developing for the Caltech Submm Observatory (CSO). The design consists of two focusing elements in addition to the CSO primary and secondary mirrors: a(More)
The Multiwavelength Sub/millimeter Inductance Camera (MUSIC) is a four-band photometric imaging camera operating from the Caltech Submillimeter Observatory (CSO). MUSIC is designed to utilize 2304 microwave kinetic inductance detectors (MKIDs), with 576 MKIDs for each observing band centered on 150, 230, 290, and 350 GHz. MUSIC’s field of view (FOV) is 14(More)
The structural and electrical properties of Ti-N films deposited by reactive sputtering depend on their growth parameters, in particular the Ar:N2 gas ratio. We show that the nitrogen percentage changes the crystallographic phase of the film progressively from pure α-Ti, through an α-Ti phase with interstitial nitrogen, to stoichiometric Ti2N, and through a(More)
We have developed a new technique for accurate measurement of the loss of superconducting microstrips at mm-wave frequencies. In this technique, we optically couple power to slot antenna, which is connected to one port of a hybrid coupler. One of the output ports of the hybrid delivers power to a series of mm-wave microstrip resonators which are(More)
Benjamin A. Mazin, Daniel Sank, Sean McHugh, Erik A. Lucero, Andrew Merrill, Jiansong Gao, David Pappas, David Moore, and Jonas Zmuidzinas Department of Physics, University of California–Santa Barbara, Santa Barbara, California 93106-9530, USA National Institute of Standards and Technology, Boulder, Colorado 80305-3328, USA Department of Physics, California(More)
We present Sunyaev-Zel’dovich (SZ) effect measurements from wide-field images towards the galaxy cluster RX J1347.5−1145 obtained from the Caltech Submillimeter Observatory with the Multiwavelength Submillimeter Inductance Camera (MUSIC) at 147, 213, 281, and 337 GHz and with Bolocam at 140 GHz. As part of our analysis, we have used higher frequency data(More)