Review Article
Current Direct Neutrino Mass Experiments
Figure 12
The Troitsk Neutrino Mass Experiment: vacuum vessel of MAC-E-Filter and of windowless gaseous tritium source , retarding electrodes , ground electrode , superconducting solenoids (6–9), warm solenoid , shield , Si(Li) detector , emergency valve , magnetodischarge pump , mercury diffusion pumps (15-16) tritium purification system , electron gun , and argon trap . (Reprinted with permission from [67], Copyright (2011) by the American Physical Society).
