Abstract

Josephson tunnel junctions, due to their ultra-fast switching between different voltage states, are in principle capable of very fast position detection. This feature, together with the high radiation hardness of the constituting materials and the possibility of direct interfacing to ultra-fast superconductive logic families, makes Josephson tunnel junctions interesting candidates for new ultra-fast pixel detectors to be used at future colliders. Possible explanation of the detection mechanism in terms of an energy balance model is proposed, together with the identification of crucial parameters for detection sensitivity. A new approach for realising a detector integrated with read-out electronics is presented. Radiation hardness for both detector and electronics is discussed. High sensitivity to magnetic field is also addressed.

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