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29 July 2010 The TES-based cryogenic anticoincidence detector for IXO: first results from large area prototypes
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The technique which combines high resolution spectroscopy with imaging capability is a powerful tool to extract fundamental information in X-ray Astrophysics and Cosmology. TES (Transition Edge Sensors)-based microcalorimeters match at best the requirements for doing fine spectroscopy and imaging of both bright (high count rate) and faint (poor signal-to-noise ratio) sources. For this reason they are considered among the most promising detectors for the next high energy space missions and are being developed for use on the focal plane of the IXO (International X-ray Observatory) mission. In order to achieve the required signal-to-noise ratio for faint or diffuse sources it is necessary to reduce the particle-induced background by almost two orders of magnitude. This reduction can only be achieved by adopting an active anticoincidence technique. In this paper, we will present a novel anticoincidence detector based on a TES sensor developed for the IXO mission. The pulse duration and the large area of the IXO TESarray (XMS X-ray Microcalorimeter Spectrometer) require a proper design of the anticoincidence detector. It has to cover the full XMS area, yet delivering a fast response. We have therefore chosen to develop it in a four-pixel design. Experimental results from the large-area pixel prototypes will be discussed, also including design considerations.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Claudio Macculi, Luca Colasanti, Simone Lotti, Lorenzo Natalucci, Luigi Piro, Daniela Bagliani, Francesco Brunetto, Lorenza Ferrari, Flavio Gatti, Guido Torrioli, Paolo Bastia, Arnaldo Bonati, Marco Barbera, Giovanni La Rosa, Teresa Mineo, and Emanuele Perinati "The TES-based cryogenic anticoincidence detector for IXO: first results from large area prototypes", Proc. SPIE 7732, Space Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray, 77323Y (29 July 2010);


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