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Proceedings Paper

PANGU: a wide field gamma-ray imager and polarimeter
Author(s): X. Wu; R. Walter; M. Su; G. Ambrosi; P. Azzarello; M. Böttcher; J. Chang; M. Chernyakova; Y. Fan; C. Farnier; F. Gargano; I. Grenier; W. Hajdas; M. N. Mazziotta; M. Pearce; M. Pohl; A. Zdziarski
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Paper Abstract

PANGU (the PAir-productioN Gamma-ray Unit) is a gamma-ray telescope with a wide field of view optimized for spectro-imaging, timing and polarization studies. It will map the gamma-ray sky from 10 MeV to a few GeV with unprecedented spatial resolution. This window on the Universe is unique to detect photons produced directly by relativistic particles, via the decay of neutral pions, or the annihilation or decay light from anti-matter and the putative light dark matter candidates. A wealth of questions can be probed among the most important themes of modern physics and astrophysics. The PANGU instrument is a pair-conversion gamma-ray telescope based on an innovative design of a silicon strip tracker. It is light, compact and accurate. It consists of 100 layers of silicon micro-strip detector of 80 x 80 cm2 in area, stacked to height of about 90 cm, and covered by an anticoincidence detector. PANGU relies on multiple scattering effects for energy measurement, reaching an energy resolution between 30-50% for 10 MeV – 1 GeV. The novel tracker will allow the first polarization measurement and provide the best angular resolution ever obtained in the soft gamma ray and GeV band.

Paper Details

Date Published: 18 July 2016
PDF: 18 pages
Proc. SPIE 9905, Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray, 99056E (18 July 2016); doi: 10.1117/12.2231871
Show Author Affiliations
X. Wu, Univ. of Geneva (Switzerland)
R. Walter, Univ. of Geneva (Switzerland)
M. Su, Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology (United States)
G. Ambrosi, INFN Perugia (Italy)
P. Azzarello, Univ. of Geneva (Switzerland)
M. Böttcher, North-West Univ. (South Africa)
J. Chang, Purple Mountain Observatory (China)
M. Chernyakova, Dublin City Univ. (Ireland)
Y. Fan, Purple Mountain Observatory (China)
C. Farnier, Oskar Klein Ctr., Univ. of Stockholm (Sweden)
F. Gargano, INFN Bari (Italy)
I. Grenier, IRFU, CEA-Saclay (France)
W. Hajdas, Paul Scherrer Institute (Switzerland)
M. N. Mazziotta, INFN Bari (Italy)
M. Pearce, Oskar Klein Ctr., KTH Royal Institute of Technology (Sweden)
M. Pohl, Univ. of Geneva (Switzerland)
A. Zdziarski, Nicolaus Copernicus Astronomical Ctr. (Poland)

Published in SPIE Proceedings Vol. 9905:
Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray
Jan-Willem A. den Herder; Tadayuki Takahashi; Marshall Bautz, Editor(s)

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