CERN Accelerating science

Internal Note
Report number	CERN-ACC-Note-2016-0048
Title	SEL Hardness Assurance in a Mixed Radiation Field
Abbreviation	SEL: Single Event Latchup
Author(s)	Garcia Alia, Ruben (CERN) ; Brugger, Markus (CERN) ; Danzeca, Salvatore (CERN) ; Ferlet-Cavrois, Veronique (Rutherford Appleton Laboratory) ; Frost, Christopher (Consultant in St Arnoult France) ; Gaillard, Remi ; Mekki, Julien (Centre Spatial de Toulouse (FR)) ; Saigné, Frédéric (Institut d'Electronique du Sud, Université de Montpellier) ; Thornton, Adam (University of Surrey (GB)) ; Uznanski, Slawosz (CERN) ; Worbel, Frédéric (Institut Universitaire de France)
Corporate author(s)	CERN. Geneva. ATS Department
Publication	2015
Imprint	17 Jul 2015
Number of pages	10
Subject category	Accelerators and Storage Rings
Accelerator/Facility, Experiment	CERN LHC CERN East Area
Project	CERN LHC-R2E
Abstract	This paper explores the relationship between monoenergetic and mixed-field Single Event Latchup (SEL) cross sections, concluding for components with a very strong energy dependence and highly-energetic environments, test results from monoenergetic or soft mixed-field spectra can significantly underestimate the operational failure rate. We introduce a semi-empirical approach that can be used to evaluate the SEL rate for such environments based on monoenergetic measurements and information or assumptions on the respective sensitive volume and materials surrounding it. We show that the presence of high-Z materials such as tungsten is particularly important in determining the hadron cross section energy dependence for components with relatively large LET thresholds.
Submitted by	[email protected]