Location-sensitive detection device for large-area surface contamination

The invention discloses a location-sensitive detection device for large-area surface contamination. The device comprises a detector system, an electronics system and a PC (personal computer) system. The detector system receives, ionizes, magnifies and locates detected particles, and then the electronics system reads two-dimensional location information of the detected particles and the PC system displays the information. The detector system comprises a multipath reading unit, and the multipath reading unit is arranged inside the detector system and is composed of a plurality of anode modules. Number of the anode modules can be adjusted according to different detection system location resolution capability requirements, and the anode modules locate the detected particles, and since the multipath reading unit is composed of a plurality of the anode modules, the two-dimensional location information of the particles can be judged.