Performance assessment study of the balloon-borne astronomical soft gamma-ray polarimeter PoGOLite

M. Arimoto*, Y. Kanai, M. Ueno, J. Kataoka, N. Kawai, T. Tanaka, K. Yamamoto, H. Takahashi, T. Mizuno, Y. Fukazawa, M. Axelsson, M. Kiss, C. Marini Bettolo, P. Carlson, W. Klamra, M. Pearce, P. Chen, B. Craig, T. Kamae, G. MadejskiJ. S.T. Ng, R. Rogers, H. Tajima, T. S. Thurston, Y. Saito, T. Takahashi, S. Gunji, C. I. Bjornsson, S. Larsson, F. Ryde, G. Bogaert, G. Varner

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Measurements of polarization play a crucial role in the understanding of the dominant emission mechanism of astronomical sources. Polarized Gamma-ray Observer-Light version (PoGOLite) is a balloon-borne astronomical soft gamma-ray polarimeter at the 25-80 keV band. The PoGOLite detector consists of a hexagonal close-packed array of 217 Phoswich detector cells (PDCs) and side anti-coincidence shields (SASs) made of BGO crystals surrounding PDCs. Each PDC consists of a slow hollow scintillator, a fast scintillator and a BGO crystal that connects to a photomultiplier tube at the end. To examine the PoGOLite's capability and estimate the performance, we conducted experiments with the PDC using radioisotope 241Am. In addition, we compared this result with performance expected by Monte Carlo simulation with Geant4. As a result, we found that the actual PDC has the capability to detect a 100 m Crab source until 80 keV.

Original languageEnglish
Pages (from-to)438-441
Number of pages4
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Issue number2
Publication statusPublished - 2007 Dec
Externally publishedYes


  • Balloon experiment
  • Gamma-ray
  • Polarization
  • X-ray

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics


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