Validation of a model for radon-induced background processes in electrostatic spectrometers

N. Wandkowsky, G. Drexlin, F. M. Fränkle, F. Glück, S. Groh, S. Mertens

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


The Karlsruhe Tritium Neutrino (KATRIN) experiment investigating tritium β-decay close to the endpoint with unprecedented precision has stringent requirements on the background level of less than 10-2 counts per second. Electron emission during the α-decay of 219, 220Rn atoms in the electrostatic spectrometers of KATRIN is a serious source of background exceeding this limit. In this paper we compare extensive simulations of Rn-induced background to specific measurements with the KATRIN pre-spectrometer to fully characterize the observed Rn-background rates and signatures and determine generic Rn emanation rates from the pre-spectrometer bulk material and its vacuum components.

Original languageEnglish
Article number085102
JournalJournal of Physics G: Nuclear and Particle Physics
Issue number8
StatePublished - Aug 2013
Externally publishedYes


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