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Development of Position-sensitive Transition-edge Sensor X-ray DetectorsWe report on the development of position-sensitive transition-edge sensors (PoST's) for future x-ray astronomy missions such as the International X-ray Observatory (IXO), currently under study by NASA and ESA. PoST's consist of multiple absorbers each with a different thermal coupling to one or more transition-edge sensor (TES). This differential thermal coupling between absorbers and TES's results in different characteristic pulse shapes and allows position discrimination between the different pixels. The development of PoST's is motivated by a desire to achieve maximum focal-plane area with the least number of readout channels and as such. PoST's are ideally suited to provide a focal-plane extension to the Constellation-X microcalorimeter array. We report the first experimental results of our latest one and two channel PoST's, which utilize fast thermalizing electroplated Au/Bi absorbers coupled to low noise Mo/Au TES's - a technology already successfully implemented in our arrays of single pixel TES's. We demonstrate 6 eV energy resolution coupled with spatial sensitivity in the keV energy range. We also report on the development of signal processing algorithms to optimize energy and position sensitivity of our detectors.
Document ID
20080043954
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Smith, S. J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Bandler, S. R.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Brekosky, R. P.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Brown, A.-D.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Chervenak, J. A.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Eckard, M. E.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Finkbeiner, F. M.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kelley, R. L.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kilbourne, C. A.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Porter, F. s.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Sad;eor. K/ E/
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Figueroa-Feliciano, E.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Date Acquired
August 24, 2013
Publication Date
August 16, 2008
Subject Category
Instrumentation And Photography
Meeting Information
Meeting: Applied Superconductivity Conference
Location: Mons.
Country: Belgium
Start Date: August 16, 2008
End Date: August 23, 2008
Distribution Limits
Public
Copyright
Other

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