CERN Accelerating science

Published Articles
Title	Secondary electron yield of SRF materials
Author(s)	Aull, Sarah (CERN ; Siegen U.) ; Junginger, Tobias (CERN) ; Knobloch, Jens (Helmholtz-Zentrum, Berlin ; Siegen U.) ; Neupert, Holger (CERN)
Publication	2015
Number of pages	5
In:	17th International Conference on RF Superconductivity, Whistler, Canada, 13 - 18 Sep 2015, pp.TUPB050
DOI	10.18429/JACoW-SRF2015-TUPB050
Subject category	Accelerators and Storage Rings
Abstract	The secondary electron yield (SEY) describes the number of electrons emitted to the vacuum per arriving electron at the surface. For a given geometry, the SEY is the defining factor for multipacting activity. In the quest of superconducting RF materials beyond bulk niobium, we studied the SEY of the currently most important candidates for future SRF applications: Nb$_{3}$Sn, NbTiN and MgB2. All studies were done on clean but technical surfaces, i.e. on clean surfaces exposed to air and with their native oxides as it would be the case for SRF cavities.
Copyright/License	CC-BY-3.0

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