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Glass sample irridation proton test

   

Degradation of optical materials under high energy irradiation – such as loss in transmission – has been observed in the past. Therefore, radiation hardness of glasses and optics materials is required for satellite-born instruments sensitive to a faint loss in transmission.

The proton test was intended to investigate irradiation effects in optics materials, which are foreseen to be used in the Euclid NISP instrument. The test has provided information, how the optical transmission from 500 to 900 nm and in the NIR wavelength range from 900 nm to 2030 nm is affected under the expected total dose during 6.25 years of operation.