Simple zeros of primitive Dirichlet $L$-functions and the asymptotic large sieve

Assuming the Generalized Riemann Hypothesis (GRH), we show using the asymptotic large sieve that 91% of the zeros of primitive Dirichlet $L$-functions are simple. This improves on earlier work of "{O}zl"{u}k which gives a proportion of at most 86%. We further compute an $q$-analogue of the Pair Correlation Function $F(\alpha )$ averaged over all primitive Dirichlet $L$-functions in the range $\mathrm{\mid }\alpha \mathrm{\mid }<2$ . Previously such a result was available only when the average included all the characters $\chi$.