In the E2 hall, a PW-class laser will be available at a 10 Hz repetition rate. The X-ray beam lines rely on focusing the L2 and/or L3 laser into a gas jet or a gas cell. For an appropriate choice of experimental parameters (laser intensity, laser spot size and duration, and electron density in the gas), electrons are accelerated to relativistic energies by plasma wakefield acceleration and wiggled by the plasma itself (Betatron source) or by a second laser pulse (Compton source). This results in the emission of intense femtosecond X-ray or gamma-ray beams emitted from a micron-size source. The features of the radiation that is produced will depend on the needs of the end user. It will be possible to deliver either narrow spectrum (10% energy spread) or broadband radiation in a spectral range from keV to a few MeVs.

Betatron/Compton Beamline

The Betatron/Compton beam line will be implemented in the E2 experimental hall as shown in Figure 2. This hall will have a PW-class laser at a 10 Hz repetition rate, with a Betatron/Compton beam line that will provide X-ray photons from keV up to a few MeVs.