. "1951Z"^^ . "1951-12-26Z"^^ . . . . "1951-08-26Z"^^ . "Swapan Chattopadhyay (born December 26, 1951) is a particle accelerator physicist noted for his pioneering contributions of innovative concepts, techniques and developments in high energy particle colliders, coherent and incoherent light sources, ultrafast sciences in the femto- and atto- second regimes, superconducting linear accelerators and various applications of interaction of particle and light beams."@en . . . . . . "Chattopadhyay, Swapan"@en . . . . . . . . "Swapan Chattopadhyay"@en . . "Indian physicist" .