Wiggler (synchrotron)
A wiggler has a broader spectrum of radiation than an undulator. In a wiggler, the period and the strength of the magnetic field is not tuned to the frequency of radiation produced by the electrons. So, every electron in the electron bunch radiates independently. This makes a broad radiation spectrum. A wiggler can be considered to be series of bending magnets stuck together, and its radiation intensity goes up as the number of magnetic poles in the wiggler goes up.