Overview
A Superconducting Transition-Edge Sensor (TES) array X-ray spectrometer has commenced operation at BESSY II. This instrument, developed through a collaboration involving the Helmholtz-Zentrum Berlin (HZB), the Max Planck Institute for Chemical Energy Conversion (MPI-CEC) in Mülheim-an-der-Ruhr, Germany, and the National Institute of Standards and Technology (NIST) in Boulder, Colorado, U.S., represents Europe's inaugural and only TES spectrometer at a synchrotron source.
Research Context
The operational spectrometer at BESSY II introduces a new capability for X-ray spectroscopy. Its design is based on superconducting TES technology. This instrument is positioned at a synchrotron source, which is a facility that generates intense X-rays for scientific research.
Approach
The development of the TES spectrometer was a collaborative effort. The HZB, MPI-CEC, and NIST participated in its creation. Following its development, the spectrometer has been commissioned and is now operational at BESSY II. The team anticipates receiving research proposals from the user community for its application.
Findings
- The photon detection efficiency of the new TES array X-ray spectrometer surpasses that of conventional wavelength-dispersive X-ray emission spectrometers.
- This improvement in efficiency is significant, ranging from a factor of 100 to 1,000.
- The spectrometer will be utilized for investigating the electronic properties of various material types.
- Specific examples of materials targeted for investigation include atomically thin layers, nanostructures, and highly diluted atomic and molecular samples.
Why This Matters
The improved photon detection efficiency offered by this TES spectrometer could facilitate X-ray spectroscopic investigations that are challenging or not feasible with existing wavelength-dispersive systems. Its application is specifically focused on understanding the electronic properties within advanced and often novel material structures like atomically thin layers and nanostructures, potentially expanding research capabilities in material science.