Ricerc@Sapienza

In the following, the main characteristics of the apparatus:
* ARPES hemispherical electron analyser: Scienta SES-200, 4 meV best energy resolution, <0.1 angular resolution, 1-50 eV pass-energy range, multi-channel detector (MCD, 8 angular span and 10% of pass-
energy energy span);
* ARPES photon source: Omicron-Scienta VUV-5000 monochromatised MW-excited He source, main lines HeI at 21.218 eV and HeII at 40.814 eV, up to HeII at 52.241 eV;
* ARPES manipulator: 5-degrees of freedom UHV manipulator, with precision rotation of the azimuthal and polar angles, cryostat to liquid nitrogen temperature, electron-bombardment heater up to 1200C;
* Low-Energy Electron Di raction (LEED): Specs retractable ErLEED system, with LEED and Auger modules;
* Ion Gun: Omicron ISE10 0.2-5 keV energy range, Ar ion source;
* Mass Spectrometer: residual gas analyser SRS RGA 300, 1-300 a.m.u. range;
* Gas line, equipped with several ports for small bottles and UHV-connected through a leak-valve to the main chamber; oxygen and C2H4 sources mounted, the latter for graphene preparation on metals via temperature
programmed growth;
* Organic-molecular beam epitaxy (O-MBE) cells; high-temperature electron-bombardment based evaporator for transition metals; quartz crystal thickness monitor; cleaver, other ancillary facilities for sample prepara-
tion, etc.

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