Abstract
Timing detectors are a well established part of High Energy Physics experimental instrumentation. The choice of sensors with fast (less than 10 ns) and precise (better than 100 ps) signals is an essential part of the design of a timing detector, together with radiation resistance considerations. Single crystal diamond sensors are one of the most promising technologies in this field. In this paper, the main characteristics that make single diamond crystal sensors ideal for timing applications will be described and an introduction to the design of fast front-end electronics will be given. Finally, two examples of diamond timing detectors used in High Energy Physics, the START detector of HADES and the TOTEM/CMS timing detector, will be discussed.
Highlights
In the last few years fast timing detectors have become more and more important for High Energy Physics (HEP) and for technological applications
Before describing the details of timing detectors based on scCVD, it is useful to summarize the main differences between silicon and diamond sensors
Due to the greater mobility of electrons and holes and to the combination of high resistivity and high breakdown field that allow a diamond sensor to operate with higher bias, i.e., higher internal electric field, scCVD diamond sensors have a faster signal with respect to silicon sensors
Summary
In the last few years fast timing detectors have become more and more important for High Energy Physics (HEP) and for technological applications. TOTEM has already operated a timing detector [3] in a special LHC run and other major Collaborations are currently undergoing R&D on timing detectors. An overview on modern timing detectors will be presented, with particular attention to diamond sensors.
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