Liquid argon cryogenic purification system for ARGONTUBE (University of Bern)

Design and manufacturing of a liquid argon purification system for ARGONTUBE detector composed of:

- pure liquid argon cryostat, 5 mt long
- cryogenic oxygen trapping filters
- additional purification loop equipped with cryogenic bellow pumps.

The purification system guarantee a purity value better than 0.15 ppb starting from commercial argon.