Spiral energy reducer and using method thereof

The invention discloses a spiral energy reducer, which belongs to the technical field of particle accelerators and particle therapy, and comprises a guide rod, two groups of driven gears and two groups of driving gears, the two groups of driven gears are respectively connected to the guide rod through two spiral wedge-shaped blocks, and the two groups of driving gears are respectively connected to the guide rod through two spiral wedge-shaped blocks. The movement directions of the two spiral wedge-shaped blocks on the guide rod are opposite, the two sets of driving gears are engaged with the two sets of driven gears correspondingly, and the rotation directions of the two sets of driving gears are opposite; the structure of the spiral wedge-shaped block is reasonably designed, the rotational inertia of the spiral wedge-shaped block is reduced, rapid response of energy adjustment can be achieved, the problem of rapid and continuous adjustment of beam energy is solved, and implementation of a high-dose Flash sca