Surface related properties as an essential ingredient to e-cloud simulations

In recent years e-cloud related processes have been understood to play a major role in limiting the expected performances of some present and planned accelerators. Big efforts have been then devoted to the detailed comprehension of the process and more and more refined simulation codes have been produced in order to be able to predict and control such effects. Essential input parameters to such calculations are a number of surface related properties whose detailed study has attracted growing attention. In this context, surface science studies can address a number of important issues like photo and electron reflectivity, photo- and electron-induced electron emitted energy spectrum, surface changes as induced by photon or electron bombardment, etc. Here, I present some experimental results of interest to e-cloud studies performed by means of state-of-the-art surface science techniques.