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

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

research

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

Authors: D. Attié
D. Bernard
V. Dauvois
A. Delbart
D. Durand
M. Frotin
Y. Geerebaert
P. Gros
S. Legand
P. Magnier
P. Poilleux
I. Semeniouk
Publication date: 12 October 2015
Publisher
Doi

Abstract

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.Comment: Proceedings_MPGD2015, EPJ Web of Conference