SACE Stage 2 Physics — Electricity & Magnetism 2.4

Cyclotron

Two D-shaped electrodes ("dees") sit in a uniform magnetic field. An alternating voltage across the gap accelerates the particle on every crossing — but only if the oscillator matches the cyclotron frequency f_c = qB / 2π m. In Demo the frequency is locked on; in Game you tune it yourself.

Mode

Particle

Magnetic field B

Gap voltage V

Oscillator frequency f

MHz

Field direction

Cyclotron frequency f_c = qB / 2πm —

Detune (f − f_c) / f_c —

Kinetic energy —

Orbit radius —

In-phase streak —