2.2.6 spase://CDPP/Instrument/AMDA/Cluster4/PEACE PEACE Plasma Electron and Current Experiment 2016-11-04T15:37:46Z The PEACE instrument consists of two sensors, HEEA (High Energy Electron Analyser) and LEEA (Low Energy Electron Analyser), and a data processing unit, the DPU. The sensors are Top Hat electrostatic analysers. The basic measurement made by PEACE is the number of counted electrons per accumulation time. The satellite spin period, Tspin , is measured as the time taken between two detections of the Sun by the spacecraft sun sensor (which is expected to be 4 seconds ±10%). Within the PEACE DPU, the spin period is subdivided into 1024 equal parts, of duration Tacc , the PEACE accumulation time. The instrument measurement cycle is thus adjusted to match the spin period so that PEACE collects data from a full 4pi solid angle (i.e. provides all-sky coverage) during each and every spin. For a nominal 4 second spin, Tacc ~ 3.9 msec. In reality this is calculated from the duration of the previous spin provided by the spacecraft housekeeping. Principal Investigator: Andrew Fazakerley spase://SMWG/Person/Andrew.N.Fazakerley PrincipalInvestigator ESA web page http://sci.esa.int/jump.cfm?oid=33024 PEACE NSSDC's Master Catalog http://nssdc.gsfc.nasa.gov/database/MasterCatalog?sc=2000-045A&ex=5 Information about the Plasma Electron and Current Experiment (PEACE) experiment on the Cluster 2/FM8 (Tango) mission. spase://SMWG/Instrument/Cluster2-Tango/PEACE ElectrostaticAnalyser 2000-12-01T00:00:00 Start of full orbit coverage: 2002-06-01T00:00:00 spase://CDPP/Observatory/AMDA/Cluster4