RF harmonic number ($h=f_{\mathrm{RF}}/f_{\mathrm{rev}}$)

The integer number of radio-frequency cycles per revolution of a synchronous particle in a circular accelerator. It fixes $f_{\mathrm{RF}}=h{f}_{\mathrm{rev}}$ and the number of RF buckets around the ring. It is unrelated to an arithmetic harmonic number $H_n$.