Abstract
We report the latest design and experimental results for a Position-Sensitive Transition-Edge Sensor (PoST). The PoST is motivated by the desire to achieve a larger field-of-view without increasing the number of readout channels. A PoST consists of a one-dimensional array of X-ray absorbers connected on each end to a Transition Edge Sensor (TES). Position differentiation is achieved through a comparison of pulses between the two TESs and X-ray energy is inferred from a sum of the two signals. Optimizing such a device involves studying the available parameter space which includes device properties such as heat capacity and thermal conductivity as well as TES read-out circuitry parameters. We present results for different regimes of operation and the effects on energy resolution, throughput, and position differentiation. Results and implications from a non-linear model developed to study the saturation effects unique to PoSTs are also presented.
Original language | English (US) |
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Pages (from-to) | 505-507 |
Number of pages | 3 |
Journal | Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
Volume | 520 |
Issue number | 1-3 |
DOIs | |
State | Published - Mar 11 2004 |
Keywords
- Calorimeter
- Constellation-X
- Microcalorimeter
- Position-sensitive
- Spectrometer
- X-ray
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Instrumentation