  The "Troitsk anomaly" is a strange bump at the end of the tritium beta
spectrum observed in electron antineutrino mass measurements. It reveals a
half-year variation. The nature of the anomaly can be accounted for by
interaction of negative DArk Electric Matter Objects - daemons detected by us
with the Nb-containing superconducting coils of the gaseous tritium source of
the setup. In crossing the system, the daemons, whose flux varies with a
half-year period, drag away Nb-containing clusters and excite their nuclei and
electronic shells to produce emission of five Auger electron lines within E =
18566-18572 eV. This yields an estimate for the daemon flux ~10-7-10-6 cm-2s-1.
It is shown that in the KATRIN system (KArlsruhe TRItium Neutrino experiment)
presently under construction the ratio of the daemon-stimulated Auger bump
signal to the useful beta-signal should be larger than that in the Troitsk
experiment. The potential of using slightly modified systems at Troitsk and
Karlsruhe to study the daemons is pointed out.

High Energy Physics - Phenomenology