 Within the train, the bunches are separated by 12.3ns that corresponds to the laser pulse repetition frequency of 81.25 MHz.The electron beam is then injected into the superconductive linac (booster), accelerated to the energy of 8.35MeV and transported to the main linac that increases the beam energy to 35MeV.Both superconductive linacs are cooled down to approximately 20 K with liquid helium.