Applications of gas imaging micro-well detectors to an advanced Compton telescope

P. F. Bloser, S. D. Hunter, J. M. Ryan, M. L. McConnell, R. S. Miller, T. N. Jackson, B. Bai, S. Jung

Research output: Contribution to journalShort surveypeer-review

11 Scopus citations


We present a concept for an Advanced Compton Telescope (ACT) based on the use of pixelized gas micro-well detectors to form a three-dimensional electron track imager. A micro-well detector consists of an array of individual micro-patterned proportional counters opposite a planar drift electrode. When combined with thin film transistor array readouts, large gas volumes may be imaged with very good spatial and energy resolution at reasonable cost. The third dimension is determined from the drift time of the ionization electrons. The primary advantage of this approach is the excellent tracking of the Compton recoil electron that is possible in a gas volume. Such good electron tracking allows us to reduce the point spread function of a single incident photon dramatically, greatly improving the imaging capability and sensitivity. The polarization sensitivity, which relies on events with large Compton scattering angles, is particularly enhanced. We describe a possible ACT implementation of this technique, in which the gas tracking volume is surrounded by a CsI calorimeter, and present our plans to build and test a small prototype over the next three years.

Original languageEnglish (US)
Pages (from-to)299-303
Number of pages5
JournalNew Astronomy Reviews
Issue number1-4
StatePublished - Feb 2004

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


Dive into the research topics of 'Applications of gas imaging micro-well detectors to an advanced Compton telescope'. Together they form a unique fingerprint.

Cite this