IPR Gandhinagar proposes roadmap for India’s fusion power plans, PgII

Key Highlights:

• Researchers at the Institute for Plasma Research (IPR) in Gandhinagar have proposed a roadmap for achieving fusion power in India.
• The roadmap includes developing India’s first fusion electricity generator, the Steady-state Superconducting Tokamak-Bharat (SST-Bharat), with a projected output of 130 MW.
• The SST-Bharat is planned as a fusion-fission hybrid reactor, with 100 MW from fission and an estimated construction cost of ₹25,000 crore.
• The ultimate goal is to commission a full-scale demonstration reactor by 2060, generating 250 MW with an output-to-input power ratio of 20.

Detailed Insights:

• Nuclear fusion involves combining light atoms to form heavier ones, releasing substantial energy, and is considered a safer alternative to nuclear fission due to reduced radioactive waste.
• The tokamak is a doughnut-shaped reactor vessel crucial for containing plasma during fusion, with the duration of plasma containment being a key factor in its success.
• The roadmap suggests using digital twins, virtual replicas of physical systems, and machine learning to enhance plasma confinement and develop radiation-resistant materials.
• India's fusion timeline, targeting 2060 for a demonstration reactor, is more cautious compared to other global initiatives like the U.K.’s STEP programme aiming for a prototype by 2040.
• Challenges include modest funding, the absence of private sector engagement, and competition with other energy priorities like achieving net zero by 2070 and expanding solar, wind, and fission programs.

Scientific/Technical Concepts Involved:

• Nuclear Fusion: A process where two light atomic nuclei combine to form a single heavier nucleus, releasing a large amount of energy.
• Plasma: A state of matter in which a gas becomes ionized and carries an electrical charge, essential for nuclear fusion reactions.
• Tokamak: A device using a powerful magnetic field to confine plasma in the shape of a torus (doughnut) for controlled nuclear fusion.