The Nuclear Compton Telescope (NCT): Scientific goals and expected sensitivity

Hsiang Kuang Chang, Steven Boggs, Yuan Hann Chang

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


The Nuclear Compton Telescope (NCT) is a balloon-borne telescope designed to study astrophysical sources of gamma-ray emission with high spectral resolution, moderate angular resolution, and novel sensitivity to gamma-ray polarization. The heart of NCT is an array of cross-strip germanium detectors, each of 15-mm thickness and 5400 mm 2 active area, with full 3D position resolution <2 mm 3 . NCT will perform Compton imaging in the 0.2-10 MeV gamma-ray band. We are currently planning a 12-detector long duration balloon flight of the NCT instrument from Australia in December 2008. NCT is the prototype of a future satellite mission, which will have a coded mask on top of a larger detector array to carry out imaging in the 20-100 keV X-ray band. This paper describes the scientific goals, as well as the detector design, simulated performance and current status of the project. NCT is a joint effort of several institutions in the US and in Taiwan.

Original languageEnglish
Pages (from-to)1281-1287
Number of pages7
JournalAdvances in Space Research
Issue number8
StatePublished - 2007


  • Gamma-ray telescopes and instrumentation


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