Absolute photon power measurements at the European XFEL instruments

Integration of the European Xfel Accelerating Modules

The production of the 103 superconducting accelerating modules for the European XFEL is an international effort. Institutes and companies from seven different countries (China, France, Germany, Italy, Poland, Russia and Spain), organized in 12 different work packages contribute with parts, capacity for work and facilities to the production of the modules. Currently the series production of the ...

Microbunch Amplification in the European XFEL

Linac-based X-ray-free-electron lasers (XFELs) require very short bunches of highbrightness electron beams with peak currents of the order of kilo-Amperes. These bunches cannot be produced directly in guns because space charge forces would destroy the brilliance within a short distance [1]. Increasing bunch peak currents with longitudinal compression at beam energies high enough to suppress spa...

Ground-Based Optical Measurements at European Flux Sites: A Review of Methods, Instruments and Current Controversies

This paper reviews the currently available optical sensors, their limitations and opportunities for deployment at Eddy Covariance (EC) sites in Europe. This review is based on the results obtained from an online survey designed and disseminated by the Co-cooperation in Science and Technology (COST) Action ESO903-"Spectral Sampling Tools for Vegetation Biophysical Parameters and Flux Measurement...

Development of the DAQ Front-end for the DSSC Detector at the European XFEL

Qcd Measurements in Photon-photon Collisions at Lep *

An overview of the latest results of the LEP collaborations on QCD measurements in photon-photon collisions is presented, including measurements of the total hadronic cross-section, the production of heavy quarks and dijets and the structure functions of real and virtual photons.