The interaction of heavy quarkonia with hadronic matter is one of key questions of QCD. Because of the small spatial size of heavy quarkonia on the hadronic scale, r_QQ >> 1 fm, QCD operator methods can be used to describe their interactions with hadrons and external probes in controlled approximation. Heavy quarkonium production probes the local color (gluon) fields in the nucleon, and can reveal properties such as their response to momentum transfer, their spatial distribution, and their correlation with valence quarks. With available beam energy and experimental facilities photo- and electroproduction of charmed quarkonium, cc, can be studied at Jefferson Lab. The experimental study of the J/ψ photoproduction near threshold is an attractive subject for studying the nucleon gluonic form-factor and also is a direct way to produce and study hidden-charm pentaquark states claimed by LHCb, Pc(4380) and Pc(4450).

There is already approved experimental program at Jefferson Lab for studying J/ψ photo-and electroproduction. The first observation of J/ψ is already out from experimental Hall-D. In this talk a summary of the J/ψ studies at the lab will be given with emphases to the proposed studies using the CLAS12 detector in experimental Hall-B.