Figure 2: The small-scale PTOLEMY prototype installed at the Princeton Plasma Physics Laboratory (February 2013). Two horizontal bore NMR magnets are positioned on either side of a MAC-E filter vacuum tank. The tritium target plate is placed in the left magnet in a 3.35T field, and the RF tracking system is placed in a high uniformity 1.9T field in the bore of the right magnet with a windowless APD detector and in-vacuum readout electronics. Contents Contents ii 7 Trigger and Data-Acquisition 8 Time-of-flight 9 Muon veto 10 e-Gun Calibration 11 Vacuum system 12 Cooling systems