Double sided strip monolithic silicon E-ΔE telescope produced by Quasi-Selective Epitaxy

The problem of cross-talks (induction of signals) from the E detector to the deltaEdetector in a monolithic E-deltaE telescope was solved by the appropriate geometry ofthe telescope. It was shown by a solution of the telegraphic equation describing thetime-dependent evolution of induced signals in the deltaE detector RC line, that forlong and narrow monolithic telescopes the induced signals (cross-talks) were suppressed.These results are experimentally supported by measurements of alpha particleswith the circular monolithic E-deltaE telescope. When alpha particles were measured atthe telescope edge, the induced signal (cross-talk) was decreased. For alpha particlesmeasured at the center of the telescope the amplitude of cross-talk was bigger.Applying these results we have designed a new type of device based on the n+ - n -p+ - n - n+ structures: double-sided strip monolithic silicon E-deltaE telescope. Thedevice is similar to the Radeka double sided strip detector, however, an introducedp+ type buried grounded separating layer isolates the (upper) deltaE strip detectorfrom the (bottom) E strip detector of the telescope.