This detector design has earlier been shown to provide near fundamental noise limited device performance. These detectors use an additional layer of gold bars deposited on top of the bilayer, oriented transverse to the direction of the current flow, for the suppression of excess noise.
The detector array is designed as a square grid of suspended, 1μm thick silicon bolometers with superconducting molybdium/gold bilayer TESs. We have produced a laboratory demonstration of our new Backshort-Under-Grid (BUG) bolometer array architecture in a monolithic, 2-dimensional, 8x8 format. International Nuclear Information System (INIS)
Their spectral and angular responses agree well with the theoretical expectations.Ĭharacterization of TES bolometers used in 2-dimensional Backshort-Under-Grid (BUG) arrays for far-infrared astronomy Several prototype devices have been fabricated and optically characterized. The required wide frequency coverage, large number of sensitive detectors, and the stringent power constraints on a balloon are made possible by antenna-coupled TES bolometers. SPIDER is a proposed balloon-borne experiment designed to search for the imprints of gravity waves on the polarization of the cosmic microwave background radiation.
||||[California Institute of Technology, 1200 E California Boulevard, Pasadena, CA 91125 (United States) In this paper we describe the 160 pixel FDM set-up, show the results and discuss the issues faced during operation of the 160 pixel FDM experiment.Īntenna-coupled TES bolometers for the SPIDER experimentĮnergy Technology Data Exchange (ETDEWEB) Although initial operation and locking of the pixels went smoothly the experiment revealed several complications. Of the 160 LC filter and TES bolometer chains 151 have been connected and after cooldown 148 of the resonances could be identified. The next step after the successful demonstration of the read out of 38 TES bolometers using FDM was to demonstrate the FDM readout of the required 160 TES bolometers. Jackson, B.įor the read out of the Transition Edge Sensors ( TES) bolometer arrays of the SAFARI instrument on the Japanese background-limited far-IR SPICA mission SRON is developing a Frequency Domain Multiplexing (FDM) read-out system. The 160 TES bolometer read-out using FDM for SAFARI
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