MONITORING CART

PROBLEM TO BE SOLVED: To provide a monitoring cart capable of sensitively detecting radiation from a contamination source even when it approaches the contamination source to some extent, and to allow the detection limit angle to smoothly vary depending on the azimuth.SOLUTION: The front surface 18b of a housing 18 constitutes a semi-cylindrical surface. Thus, the front edge of the top surface 18a constitutes a semicircle. A scintillator member is disposed inside a detection section 20. The front edge is curved so as to surround the scintillator member in the view from the scintillator member, so that the azimuth dependence of the detection limit angle for radiation coming from the downside can be made low, or the detection limit angle can be smoothly varied depending on the azimuth.