Translator Disclaimer
27 November 1989 A Liquid Xenon Imaging Telescope For 1-30 MeV Gamma-Ray Astrophysics
Author Affiliations +
Abstract
We discuss the application of a high resolution liquid xenon imaging chamber as a γ-ray telescope for medium energy astrophysics. The chamber, operated in the Time Projection Mode, will be capable to image any ionizing event occurring within its sensitive volume. Gamma-ray events with multiple Compton interactions will be identified as such, thus significantly enhancing the detection efficiency over a wide energy range. This represents the main advantage of the proposed liquid xenon instrument over more conventional double scatter Compton telescopes, in which stringent topological constraints limit considerably the acceptance. In the Compton regime, the excellent energy and position resolution of the detector, on the order of 3% FWHM at 1 MeV and of 250 pm RMS, respectively, will result in a 1a angular resolution of 0.5° - 0.3° for 7-ray energies of 1-20 MeV. The ambiguity in source location that characterizes the Compton measurement can be removed for 7-ray events of high enough energy to allow the reconstruction of the direction of the Compton electron. In the pair production regime, the incoming γ-ray direction can also be uniquely determined from the reconstructed openining angle of the electron-positron pair. An effective discrimination against charged and neutral background events is a direct consequence of the detector imaging capability. The versatility of the liquid xenon telescope and its unique characteristics will allow a large variety of γ-ray emitting sources to be explored with high sensitivity.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Elena Aprile, Reshmi Mukherjee, and Masayo Suzuki "A Liquid Xenon Imaging Telescope For 1-30 MeV Gamma-Ray Astrophysics", Proc. SPIE 1159, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy and Atomic Physics, (27 November 1989); https://doi.org/10.1117/12.962588
PROCEEDINGS
11 PAGES


SHARE
Advertisement
Advertisement
RELATED CONTENT

Liquid Xe TPC with multistrip-type anode
Proceedings of SPIE (March 10 2003)
Liquid xenon time projection chamber for gamma rays in the...
Proceedings of SPIE (December 21 1992)
Liquid-Xe calorimeter for gamma rays in the GeV region
Proceedings of SPIE (December 21 1992)
Initial results on calorimetry and imaging of MeV gamma rays...
Proceedings of SPIE (September 20 1994)
Space-Based High Resolution Gamma Ray Telescope
Proceedings of SPIE (May 17 1988)

Back to Top