The Borexino purification system

Jay Burton Benziger

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


Purification of 278 tons of liquid scintillator and 889 tons of buffer shielding for the Borexino solar neutrino detector is performed with a system of combined distillation, water extraction, gas stripping and filtration. The purification system removed K, U and Th by distillation of the pseudocumene solvent and the PPO fluor. Noble gases, Rn, Kr and Ar were removed by gas stripping. Distillation was also employed to remove optical impurities and reduce the attenuation of scintillation light. The success of the purification system has facilitated the first time real time detection of low energy solar neutrinos.

Original languageEnglish (US)
Article number1442002
JournalInternational Journal of Modern Physics A
Issue number16
StatePublished - Jun 30 2014

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics
  • Astronomy and Astrophysics


  • Solar neutrino
  • liquid scintillator
  • low background detector
  • radiopurity


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