Schematic view of the complete 70 m long KATRIN setup. (a) Windowless Gaseous Tritium Source (WGTS). (b) Transport section consisting of a differential (DPS2-F) and a cryogenic (CPS) pumping section. (c) Prespectrometer: prefilter of -spectrum. (d) Main spectrometer: energy analysis of -electrons. (e) Detector: position-sensitive detection of transmitted electrons [72].
