Overview of studies and developments in cinematography, optoelectronic imaging and photonics at CEA/DIF

摘要

This paper gives an overview of works undertaken at CEA/DIF in high speed cinematography, optoelectronic imaging and ultrafast photonics for the needs of the CEA/DAM experimental programs. We have developed a new multichannel velocimeter, and a new probe for shock breakout timing measurements in detonics experiments. A brief description and a recall of their main performances will be made. We have implemented three new optoelectronic imaging systems, in order to observe dynamic scenes in the ranges of 50-100 keV and 4 MeV. These systems are described, their main specifications and performances are given. Then we describe our contribution to the ICF program : after recalling the specifications of LIL plasma diagnostics , we describe the features and performances of visible streak tubes, X-ray streak tubes, visible and X-ray framing cameras and the associated systems developed to match these specifications. At last we introduce the subject of components and systems vulnerability in the LMJ target area, the principles identified to mitigate this problem and the first results of studies (image relay, response of streak tube phosphors, MCP image intensifies and CCDs to fusion neutrons) related to this subject. Results obtained so far are presented.