Technology / Princeton Field-Reversed Configuration

A compact approach
to an immense challenge.

PFRC uses radio-frequency waves to heat plasma and drive current within a magnetic configuration. Our programme advances the experiments and engineering needed for the next machine.

01 / The configuration

Conceptual PFRC magnetic chamberAn elongated plasma inside a cylindrical chamber, surrounded by external magnetic coils. Illustration only, not to scale.
Conceptual schematic, not an engineering drawing.

Confine

A compact magnetic geometry holds an elongated plasma.

Heat & drive

Rotating magnetic fields drive current and heat the plasma.

Develop toward power

The reactor concept targets D–³He fuel and heat-to-electricity conversion. Net power remains a future goal.

The PFRC-2 experimental apparatus at Princeton Plasma Physics Laboratory
PFRC-2 at Princeton Plasma Physics Laboratory.

The next evidence

The first experiment
tests ion heating.

Published PFRC-2 work reports long plasma discharges with electron heating. Our next scaling question is ion heating, measured through a focused experimental campaign.

The Indian lab programme is planned around subsystem validation, integrated experiments and repeatable runs.

Read the PFRC research overview
What remains to be demonstrated?

From plasma experiments to net power

Ion heating, confinement and repeatable operation are development milestones. Longer discharges and electron heating do not establish fusion gain or a commercially viable generator.

Fuel and the complete power system

Helium-3 supply, heat collection and recirculating power remain part of the engineering programme. D–³He aims to reduce neutron loading; D–D side reactions still produce neutrons.

Science becomes progress through people.

Meet the team