Solar Orbiter STIX, PSU


Mission phase: B closure

Period: since 2011

Initial TRL: 3

CSRC contribution: Design of the power supply unit for the STIX instrument. Activities: design, development, analysis, breadboarding, manufacturing, testing, verification, qualification, integration.


  • FHNW Windisch, Switzerland
  • ETH Zürich, Switzerland
  • CBK WAW, Poland
  • Evolvsys s.r.o., Czech Republic
  • AIP, Germany
  • LESIA, France
  •   The Spectrometer/Telescope for Imaging X-rays, STIX, is a critical component of the Solar Orbiter (SolO) payload for achieving several of the major HELEX science goals. Through its X-ray imaging spectroscopy with unprecedented sensitivity and spatial resolution, STIX will provide the most reliable and quantitative information on the timing, location, intensity, and spectra of accelerated electrons near the Sun. Electrons that escape from the Sun during the same events can be measured in situ at SolO and tracked into the heliosphere through their radio type-III emissions. Thus, STIX provides an essential component of the SolO remote sensing and in-situ electron measurements necessary to achieve the HELEX goal of answering the question - “What are the sources, acceleration mechanisms, and transport processes of solar energetic particles?” This same combination of remote sensing and in situ observations will provide direct tracing of the magnetic connectivity from SolO back to the Sun, addressing a second major HELEX question - “What are the origins of the solar wind streams and the heliospheric magnetic fields?”