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The Transition Radiation Detector (TRD) is a new type of technology altogether, though stemming from European research in the 1960s and 1970s. The detector has been incorporated in only a few cosmic ray missions, namely NASA's Cosmic Ray Nucleus Experiment (CRNE) mission, which flew on the shuttle, and subsequent high altitude balloon experiments.
One other novel feature of the ACCESS mission is its location. ACCESS will share a spot on the International Space Station, the largest and most complex international scientific project in history. When the Space Station is fully assembled it will house six or seven scientists and a state-of-the-art, multipurpose laboratory.
A service of the Laboratory for High Energy Astrophysics (LHEA) at NASA's GSFC
Author: Chris Wanjek
Responsible NASA Official: Robert Streitmatter
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