Electron storage ring BESSY

The storage ring BESSY II provides ultrabright photon beams from the Terahertz region to hard X-rays with complete control of the polarization of the radiation and energy range. More than 50 beamlines offer a multi-faceted mixture of experimental opportunities at undulator, wiggler and dipole sources with excellent energy resolution. The combination of brightness and time resolution makes BESSY II the ultimate microscope for space and time, since both femtosecond time and nanometer spatial resolutions are available.

The synchrotron radiation source BESSY II provides 25% of the XUV-infrastructure in Europe and because of the radiometry activities of the Physikalisch-Technische-Bundesanstalt, BESSY II is the European calibration standard for electromagnetic radiation.

 BESSY II in Short

• Electron Beam Energy: 1.72 GeV
• Max. Ring Current: 300 mA
• Operating Modes: Multi Bunch Hybrid, Low-alpha,
• Single Bunch
• Pulse Lengths: 100 fs, 2 ps, 50 ps
• Energy Range: 6 meV-150 keV
• Horizontal Emittance: 6 .10-9 mrad
• 14 Insertion Devices: full polarisation control

Ongoing upgrade projects for HZB photons

• Continous improvement of the accelerator system: Linac injector, Fast Feedback Orbit, new HOM-damped cavities
• Installation of new beamlines/instruments for spectroscopy, microscopy, scattering