A planar electromagnet microwiggler for free electron lasers

PFC / JA - 89 - 48 A Planar Electromagnet Microwiggler for Free Electron Lasers

We have designed and tested an electromagnet planar microwiggler for use in free-electron lasers (FELs), constructed of current conductors wound on ferromagnetic cores. A prototype with a period of 1 cm and gap of 0.5 cm produced a peak field on axis in excess of 4.6 kG, with a linear B/H characteristic to about 3.2 kG. The field of each half-period of the wiggler is independently tuneable by a...

I Free Electron Lasers*

Free-electron lasers

CURRENT SCIENCE, VOL. 87, NO. 8, 25 OCTOBER 2004 1066 Srinivas Krishnagopal and Vinit Kumar are in the Centre for Advanced Technology, Indore 452 013, India; Srinivas Krishnagopal and S. K. Sarkar are in the Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India; Sudipta Maiti and S. S. Prabhu are in the Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai 400 005, In...

Lasers , Free - Electron

Free-electron lasers are radiation sources, based on the coherent emission of synchrotron radiation of relativistic electrons within an undulator or wiggler. The resonant radiation wavelength depends on the electron beam energy and can be tuned over the entire spectrum from micrometer to X-ray radiation. The emission level of free-electron lasers is several orders of magnitude larger than the e...

X-ray free-electron lasers

In a free-electron laser (FEL) the lasing medium is a high-energy beam of electrons flying with relativistic speed through a periodic magnetic field. The interaction between the synchrotron radiation that is produced and the electrons in the beam induces a periodic bunching of the electrons, greatly increasing the intensity of radiation produced at a particular wavelength. Depending only on a p...