Double-sided Silicon Strip Detector for the study of Double Hypernuclei I

Double-sided Silicon Strip Detector (DSSD) has been designed for the study of double hypernuclei. This DSSD is a key detector in BNL- E964, which uses a new emulsion-counter hybrid method to find 10 times more double hypernuclei than before. In BNL-E964, $\Xi^{-}$ hyperons produced in the target (${}^{12} \textrm{C}$) by the $\textrm{K}^{-} + \textrm{'p'} \rightarrow \textrm{K}^{+} + \Xi^{-}$ reaction, are stopped in the emulsion and double strengeness nuclei are produced. The two DSSD's are placed within $5$ mm distance between the target and the emulsion. The DSSD is the best detector of tracking $\Xi^{-}$ because of its high position resolution and thinness which allows $\Xi^{-}$ passing the DSSD with minimum decay rate of $\Xi^{-}$. High position resolution of two DSSD's enables to trace the track of $\Xi^{-}$ with high scanning efficiency in the emulsion to find double hypernuclei. Design criteria and details of its construction are presented.