Complex sentence: In 1948, having completed his experimental work, Chamberlain returned to Berkeley as a member of its faculty, where he, Segrè, and other physicists investigated proton-proton scattering.
Split into simpler sentences: In 1948, having completed his experimental work, Chamberlain returned to Berkeley as a member of its faculty. There he, Segrè, and other physicists investigated proton-proton scattering.