Wiggler (synchrotron)

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An wiggler is an insertion device in a synchrotron. It is a series of magnet designed to deflect ('wiggle') a beam of charged particles (invariably electrons or positrons) inside a storage ring of a synchrotron.

A wiggler has a broader spectrum of radiation than an undulator.

Typically the magnets in a wiggler are arranged in a Halbach array.

Schematic diagram of a free electron laser

The design shown above is usually know as a Halbach wiggler.

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