Transition Radiation Array for Cosmic Energetic Radiation (TRACER) is a balloon flown

cosmic ray Cosmic rays are high-energy particles or clusters of particles (primarily represented by protons or atomic nuclei) that move through space at nearly the speed of light. They originate from the Sun, from outside of the Solar System in our own ...

detector built and designed at the

University of Chicago The University of Chicago (UChicago, Chicago, U of C, or UChi) is a private university, private research university in Chicago, Illinois. Its main campus is located in Chicago's Hyde Park, Chicago, Hyde Park neighborhood. The University of Chic ...

. The detector is designed to measure the energy spectra of cosmic ray nuclei with atomic numbers between five and twenty-six ( boron to

iron Iron () is a chemical element with Symbol (chemistry), symbol Fe (from la, Wikt:ferrum, ferrum) and atomic number 26. It is a metal that belongs to the first transition series and group 8 element, group 8 of the periodic table. It is, Abundanc ...

). Muller, D., 2007, ‘’The TRACER Project: Instrument Concept, Balloon Flights, and Analysis Procedures’‘, 30th International Cosmic Ray Conference.

References

Cosmic-ray experiments Balloon-borne experiments {{astrophysics-stub