Hybrid Meson Production via Pion Scattering from Nuclear Coulomb Field

The CERN COMPASS experiment may use 100-280 GeV pion and Kaon beams and magnetic spectrometers and calorimeters to measure Hybrid (mixed quark-gluon) meson production cross sections in the ultra-peripheral Primakoff scattering of high energy pions and Kaons from virtual photons in the Coulomb field of High-Z targets. There are strong advantages to study Hybrid mesons by the Primakoff reactions pi- gamma --> Hybrid --> rho pi, eta pi, eta' pi, pi b1, pi f1; and similar reactions with a K- beam. Such data should provide significant new input for a more complete understanding of the strong interactions of QCD. A brief description and update of this program is presented.