6 articles
Energy recovery linac
An energy recovery linac (ERL) is a linear particle accelerator whose spent electron beam is decelerated in the same cavities that accelerated it, recovering most of its energy for reuse.
Insertion device
An insertion device is an array of alternating-polarity magnets in a synchrotron or free-electron laser that forces electrons onto a zigzag path, generating radiation far more intense than bending magnets.
Laser-driven gamma-ray source
A laser-driven gamma-ray source produces MeV gamma rays by directing intense laser pulses onto matter, mainly through inverse Compton scattering, bremsstrahlung, or betatron radiation, aiming at compact, high-brightness sources.
Self-amplified spontaneous emission
Self-amplified spontaneous emission (SASE) is the operating principle of most short-wavelength free-electron lasers, exponentially amplifying spontaneous undulator radiation in a single pass through a long undulator.
Self-seeding in free-electron lasers
Self-seeding is a technique for improving X-ray free-electron laser pulses, in which radiation from a first undulator is filtered through a monochromator to seed amplification in a second.
X-ray free-electron laser
An X-ray free-electron laser (XFEL) is a light source producing intense, coherent, ultrashort X-ray pulses by passing electron bunches through an undulator; the first hard-X-ray device, LCLS, first lased in 2009.