HELIOS, The Linac Injector of SOLEIL: Installation and First Results

HELIOS is the Hundred MeV Electron Linac Injector Of SOLEIL [1] the new French SR facility. The Linac is constructed by THALES as a “turn key” equipment on the basis of SOLEIL APD design. The Linac injector is composed of a triode gun (90kV, 500mA), a prebuncher (10kV, 200W), a buncher (SW, 15MeV, 5MW) focalised by a shielded solenoid and two accelerating sections (TW, 2π/3, 45MeV, 12MW) feeded by two klystrons (35MW). The major Linac components have been previously tested at THALES factory and the on-site installation has begun since October 2004. After a brief description of the building construction and the Linac installation, the tests of the different components and operating modes will be detailed. The commissioning with beam was planned in March. But, the official clearance to start the Linac tests arrived in the first week of April. Therefore, the commissioning will take place in June.