ИСТИНА

Studies of nucleon resonance electrocouplings for excited proton states at various photon virtualities Q$^2$ represent an important part in the N$^*$ Program with the CLAS detector \cite{Bu11}. The CLAS measurements extend the data on differential cross sections for N$\pi$ and N$\eta$ electroproduction channels, longitudinally polarized beam/beam-target asymmetries for $\pi$ electroproduction off protons considerably, providing a nearly complete coverage of the final hadron phase space. Electrocouplings of the $P_{11}(1440)$, $D_{13}(1520)$, and $S_{11}(1535)$ resonances were determined from analyses within the framework of two conceptually different reaction models \cite{Az09} at 0.3 $<$Q$^2$$<$5.0 GeV$^2$, and at 0.3 $<$Q$^2$$<$6.0 GeV$^2$ for the $P_{33}(1232)$ state. Data were also collected on charged double pion electroproduction off protons leading to nine independent differential $\pi^{+}\pi^{-}p$ cross sections \cite{Fe09}. Using a phenomenological approach \cite{Mo09} allowed us to establish all essential mechanisms contributing to this channel at invariant masses of final hadrons W$<$1.8 GeV, and Q$^2$$<$1.5 GeV$^2$. The $P_{11}(1440)$ and $D_{13}(1520)$ electrocouplings were determined from the $\pi^+\pi^-p$ electroproduction data for the first time. They are in a good agreement with the results of the independent N$\pi$ electroproduction analyses \cite{Az09}, offering evidence for the reliable extraction of resonance electrocouplings. First results from the $\pi^+\pi^-p$ electroproduction channel on electrocouplings of $S_{11}(1650)$, $D_{33}(1700)$, and $P_{13}(1720)$ resonances have also become available. Analyses of these results in quark models and evaluation of the N$^*$ meson-baryon dressing \cite{Lee07} strongly suggests two contributions to $\gamma_{v}NN^*$ electrocouplings: a) an internal quark core, and b) an external meson-baryon cloud. A further extension of the N$^*$ Program with the CLAS12 detector after completion of JLAB 12 GeV Upgrade Project will be outlined. \begin{thebibliography}{99} \bibitem{Bu11} I.G.Aznauryan, et al., arXiv:1102.0597 (2011). \bibitem{Az09} I.G.Aznauryan, et al., Phys. Rev. {\bf C80}, 055203 (2009). \bibitem{Fe09}G.V.Fedotov, et al., Phys. Rev. {\bf C80}, 015204 (2009). \bibitem{Mo09} V.I.Mokeev, et al., Phys. Rev. {\bf C80}, 045212 (2009). \bibitem{Lee07} B.Julia-Diaz, et al., Phys. Rev. {\bf C77}, 045205 (2008).