Abstract:
To meet the requirements for simulating the solar irradiation environment in the integrated irradiation chamber with a vertical structure, a large-scale solar simulator was developed, in which a vertical off-axis collimation optical system was used. This solar simulator may closely simulate the space solar irradiation environment satisfying the irradiance, irradiation uniformity, collimation and solar spectral distribution, etc. In the development of the solar simulator, key technologies have been completed, including the design of a large-scale vertical off-axis optical-mechanical structure, analysis of structural deformation effects, processing of large-sized individual metal mirror, flexible support design for the collimation mirror, integrated cooling design, as well as quick assembly and adjustment of xenon lamp. The test results under both atmospheric environment and vacuum cryogenic environment show that the solar simulator has achieved the optical indicators of irradiation surface with a diameter of 1000 mm, irradiance of 2.3 solar constants (expandable up to 5 solar constants), surface irradiation non-uniformity of ±4.86%, and collimation angle of ±1.83°.
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