With a Ph.D. in Nuclear Physics my professional work has focused on the design and construction of circular particle accelerators and storage rings, for proton machines, electron-positron colliders and more recently, light sources. I lead the design group for the Low Energy Booster of the Superconducting Super Collider, was System Manager for the High Energy Ring of PEP-II and am now Deputy Associate Project Manager at the APS-U Project. I was a member of the SuperB design group at LNF Frascati, Italy and am a collaborator with KEK on the SuperKEKB machine. I have been a co-author of the CERN LHeC Design Report and am a contributor to the CERN FCC-ee design report presently being written. I am a member of the EIC design group at Jefferson Laboratory. I spent a year at CERN as a visitor sponsored by the US LARP program.

I have a strong interest in beam-dynamics research, in particular also in spin dynamics issues of polarized beams. Some of the work I did was related to polaried electron beams in SuperB and in the LHeC electron ring.

More recently (and as a result of my CERN stay) I became interested I channeling effects in crystals and assembled an collaboration (U Aarhus, DK, U Ferrara, IT, CalPoly and SLAC) doing channeling experiments at SLAC. Initially studying the deflection by a bent crystal we have shifted our focus to the generation of radiation and studying the possibility of generating undulator radiation.