Speaker
Description
The European X-ray Free Electron Laser (XFEL) is under commissioning at DESY. The superconducting XFEL linac will produce pulsed electron beam with energy of 17.5 GeV. The linac consist of 800 superconducting niobium 1.3 GHz nine cell cavities and 100 superconducting magnet packages assembled in 100 cryomodules. Each cryomodule has 12 m length and includes the 2K helium II bath circuit for the cavities and two radiation shields at temperatures of 5-8K and 40-80K. Before installation in the XFEL linac tunnel all cryomodules were tested in the Accelerator Test Facility (AMTF).We report about methods and results of static and dynamic heat load measurements of all XFEL cryomodules in AMTF and compare with first integral heat load mesurements in the XFEL linac.