The variable energy cyclotron (also known as K-130 cyclotron), first of its kind in India, became operational in June 16, 1977. The cyclotron can deliver high energy light ion beams (alpha, proton, and deuteron) and high charge state light heavy ion beams (Nitrogen, Oxygen, Neon and Argon) for performing experiments to various institutions from all over the country. The machine is designed to accelerate protons from 6 to 60 MeV, deuterons from 12 to 65 MeV and alpha from 25 to 130 MeV.

The K-130 cyclotron has been operating round-the-clock and delivering light ion beams (proton, alpha etc.) for experimental use in four beam lines. Low energy alpha beams (1.0 MeV to 7.2 MeV) which are likely to address the requirements of nuclear physicists have been developed.