Developing a detector model for the experiment for x-ray characterization and timing (EXACT) CubeSat

Trevor Knuth, Lindsay Glesener, Jeffrey Chaffin, Demoz Gebre Egziabher, Tim Kukowski, Maxwell Yurs, Ryan Vogt, Samuel Drehmel, Abigail Valero, Kendra Bergstedt

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The Experiment for X-ray Characterization and Timing (EXACT) mission will be a CubeSat based, hard X-ray spectrometer for measuring high-energy emission from solar flares with high time precision. Solar flares and the related coronal mass ejections affect space weather and the near-Earth environment through emission of solar energetic particles. Hard X-rays (HXRs) are emitted from flare-Accelerated electrons, which are energized at or near the time of energy release, and therefore serve to probe the timing of energy release and particle acceleration. EXACT will study the hard X-rays generated by the Sun in the declining phase of Solar Cycle 24 in order to probe electron acceleration in flares and solar eruptive events while also serving as a precursor to future hard X-ray spectrometers that could monitor the Sun continuously. EXACT's secondary mission is to demonstrate a spacecraft ranging technique based on timing of astrophysical X-ray and gamma ray bursts. EXACT will be a 3U (10x10x30 cm3) CubeSat. This paper will discuss the scintillator detector under development for the mission, including the modeling of the detector response function, as well as expected observations of solar flares by EXACT.

Original languageEnglish (US)
Title of host publicationUV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XX
EditorsOswald H. Siegmund
ISBN (Electronic)9781510612518
StatePublished - 2017
EventUV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XX 2017 - San Diego, United States
Duration: Aug 6 2017Aug 8 2017

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceUV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XX 2017
Country/TerritoryUnited States
CitySan Diego

Bibliographical note

Funding Information:
We would like to extend a special thanks to the Air Force’s University Nanosat Program (UNP), NASA’s Undergraduate Student Instrument Project (USIP), the Minnesota Space Grant Consortium, and National Science Foundation (NSF grant AGS-1429512) for their contributions and support of Space Physics at the University of Minnesota.

Publisher Copyright:
© COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.


  • CubeSat
  • Hard X-rays
  • Solar Ares
  • The Sun
  • X-ray spectrometer


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