SEY from noble metals

The detailed study of the secondary electron yield of tech-nical surfaces for very low electron landing energies (LE-SEY) is a very important parameter to be taken into accountto ensure the correct operation of particle accelerators [1].Despite such interest, LE-SEY (0-30eV) curve has beenrarely addressed due to the intrinsic experimental complex-ity to control very low energy electrons. In this paper, wepresent an experimental SEY and LE-SEY study carried outon a number of materials of interest for multipacting andelectron cloud (e-cloud) mitigation. We also compare herethe SEY curves of clean polycrystalline noble metals withthose measured on their technical surface.