Development of a small radiation flux monitor

This paper describes the development of a miniaturized radiation flux monitor by means of Cherenkov light. The idea is to use the intensity of Cherenkov light as a measurement for the radiation flux. An initial test is performed with an extrinsic dielectric object which is coupled with an optical fibre. These test show that the Cherenkov radiation in the fibre itself was too high compared with the captured extrinsic light. Further test to use intrinsic Cherenkov fibre optic sensors are planned in the near future and the envisaged measurement set up is explained. (authors)