Gary Kruppa will join Bruker Daltonics of Billerica, Mass., as vice president for western US operations next month. He will be based in Fremont, Calif. Kruppa joins Bruker from Sandia National Laboratories, where he studied the three-dimensional structures of proteins using mass spec. Prior to that, he worked for Bruker Daltonics and Bruker Instruments. Before joining Bruker, he was a research scientist at Ciba-Geigy. Kruppa holds a BS from the University of Delaware and a PhD in chemical physics from Caltech.