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dc.contributor.authorRavera, Laurentes_ES
dc.contributor.authorCara, Christophees_ES
dc.contributor.authorCeballos, María Teresaes_ES
dc.contributor.authorBarcons, Xavieres_ES
dc.contributor.authorBarret, Didieres_ES
dc.contributor.authorClédassou, Rodolphees_ES
dc.contributor.authorClénet, Antoinees_ES
dc.contributor.authorCobo, Beatrizes_ES
dc.contributor.authorDoumayrou, Erices_ES
dc.contributor.authorHartog, Roland H. denes_ES
dc.contributor.authorLeeuven, Bert-Joost vanes_ES
dc.contributor.authorLoon, Dennis vanes_ES
dc.contributor.authorMas-Hesse, J. Migueles_ES
dc.contributor.authorPigot, Claudees_ES
dc.contributor.authorPointecouteau, E.es_ES
dc.identifier.citationProceedings of SPIE 9144: 91445T (2014)es_ES
dc.descriptionEvent: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada.es_ES
dc.description.abstractWe are developing the digital readout electronics (DRE) of the X-Ray Integral Field Unit (X-IFU), one of the two Athena focal plane instruments. This subsystem is made of two main parts: the DRE-DEMUX and the DRE-EP. With a frequency domain multiplexing (FDM) the DRE-DEMUX makes the readout of the 3 840 Transition Edge Sensors (TES) in 96 channels of 40 pixels each. It provides the AC signals to voltage-bias the TES, it demodulates the detector's data which are readout by a SQUID and low noise amplifiers and it linearizes the detection chain to increase its dynamic range. The feedback is computed with a specific technique, so called baseband feedback (BBFB) which ensures that the loop is stable even with long propagation and processing delays (i.e. a few μs) and with high frequency AC-bias (up to 5 MHz). This processing is partly analogue (anti aliasing and reconstruction filters) but mostly digital. The digital firmware is simultaneously applied to all the pixels in digital integrated circuits. After the demultiplexing the interface between the DRE-DEMUX and the DRE-EP has to cope with a data rate of 61.44 Gbps to transmit the data of the individual pixels. Then, the DRE-EP detects the events and computes their energy and grade according to their spectral quality: low resolution, medium resolution and high resolution (i.e. if two consecutive events are too close the estimate of the energy is less accurate). This processing is done in LEON based processor boards. At its output the DRE-EP provides the control unit of the instrument with a list including for each event its time of arrival, its energy, its location on the focal plane and its grade.es_ES
dc.publisherSPIE digital libraryes_ES
dc.relation.isversionofPublisher's versiones_ES
dc.titleThe DRE, the digital readout electronics for Athena X-IFUes_ES
dc.typecomunicación de congresoes_ES
dc.description.peerreviewedPeer reviewedes_ES
oprm.item.hasRevisionno ko 0 false*
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