Spatial environmental radiation simulator

The utility model discloses a spatial environmental radiation simulator, comprising an electronic accelerator body, an electronic gun, a first accelerating tube, a beam cut-off diaphragm, a scanning magnet and an irradiation chamber which are sequentially connected with one another. An irradiation platform is mounted in the irradiation chamber, and a first molecular pump is further mounted on the irradiation chamber. The spatial environmental radiation simulator solves the problems that only one unidirectional scanning electron beam can be provided, and irradiation is directly performed in an atmospheric environment in the prior art. The irradiation platform is placed in the irradiation chamber which is nearly in a vacuum state to make an experiment, beams of an electronic accelerator can change in a large range, comprehensive state simulation and accurate parameter measurement can be realized, and the problem of dispersion of electron beam energy spectra is solved.