![]() 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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