Development of arrays of transition edge sensors for application in X-ray astronomy


Bruijn, Marcel P. and Bergmann Tiest, Wouter M. and Hoevers, Henk F.C. and Krouwer, Eric and Kuur, Jan van der and Ridder, Marcel L. and Moktadir, Zakaria and Wiegerink, Remco and Gelder, Dick van and Elwenspoek, Miko (2003) Development of arrays of transition edge sensors for application in X-ray astronomy. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 513 (1-2). pp. 143-146. ISSN 0168-9002

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Abstract:The development of an array of voltage biased superconducting transition edge microcalorimeters is described. This work is directed to an application in future X-ray Astronomy missions, such as Constellation-X (USA) and the X-ray Evolving Universe Spectroscopy Mission (XEUS, Europe). After several years of very successful development of single pixel microcalorimeters (SRON showed a record energy resolution ΔEFWHM = 3.9 eV for 5.9 keV photons, combined with an effective time constant of 150 μs and high X-ray absorption efficiency (94%)) work towards an array of 32 × 32 pixels has started. Aiming at a prototype of 5 × 5 pixels, several options for fabrication, using micromachining techniques are under study, both experimentally and theoretically. Measurement of thermal transport in detector support structures at sub-Kelvin temperatures indicates ballistic phonon transport. The detector development is accompanied by finite element modeling.
Item Type:Article
Additional information:Proceedings of the 6th International Conference on Position-Sensitive Detectors Leicester, UK, 9-13 September 2002
Copyright:© 2003 Elsevier
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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