focal plane detector

https://doi.org/10.1351/goldbook.12416
Detector for m/z spatially dispersed ion beams in which all ions simultaneously impinge on the detector plane to produce spatially defined signals.
Source:
PAC, 2013, 85, 1515. (Definitions of terms relating to mass spectrometry (IUPAC Recommendations 2013)) on page 1545 [Terms] [Paper]