Position-sensitive transition edge sensor modeling and results

Christina Hammock*, Enectali Figueroa-Feliciano, Emmanuel Apodaca, Simon Bandler, Kevin Boyce, Jay Chervenak, Fred Finkbeiner, Richard Kelley, Mark Lindeman, Scott Porter, Tarek Saab, Caroline Stahle

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


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 languageEnglish (US)
Pages (from-to)505-507
Number of pages3
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number1-3
StatePublished - Mar 11 2004


  • Calorimeter
  • Constellation-X
  • Microcalorimeter
  • Position-sensitive
  • Spectrometer
  • X-ray

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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