EPJ Web of Conferences (Jan 2018)

Sealed operation, and circulation and purification of gas in the HARPO TPC

  • Frotin M.,
  • Gros P.,
  • Attié D.,
  • Bernard D.,
  • Dauvois V.,
  • Delbart A.,
  • Durand D.,
  • Geerebaert Y.,
  • Legand S.,
  • Magnier P.,
  • Poilleux P.,
  • Semeniouk I.

DOI
https://doi.org/10.1051/epjconf/201817405002
Journal volume & issue
Vol. 174
p. 05002

Abstract

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HARPO is a time projection chamber (TPC) demonstrator of a gamma-ray telescope and polarimeter in the MeV-GeV range, for a future space mission. We present the evolution of the TPC performance over a five month sealed-mode operation, by the analysis of cosmic-ray data, followed by the fast and complete recovery of the initial gas properties using a lightweight gas circulation and purification system.