2.2.6 spase://CDPP/NumericalData/AMDA/Cluster/Cluster4/PEACE/clust4-pea-mom electron moments Cluster 4 Prime Parameter PEACE Data 2015-10-16T16:51:44Z The primary task of this instrument (PEACE: Plasma Electrons and Currents Experiment) is to obtain the velocity moments of the distribution function of electrons as frequently and as accurately as the spacecraft telemetry will allow. Detector counts are collected in energy, polar-angle, and azimuth-angle bins to form a three-dimensional matrix. Two sensors are used: LEEA (low-energy electron analyzer) and HEEA (high-energy electron analyzer). The energy coverage is from 0.67 eV to 30 KeV in 92 levels. The first 16 levels are equally spaced linearly up to 10.7 eV; the remainder are logarithmically spaced. Both sensors can use the full range, but the HEEA will normally operate over a higher energy range than the LEEA. The LEEA specializes in coverage of the energies from 0.7-10 eV, and has a geometric factor one fifth that of the HEAA. Both sensors consist of hemispherical electrostatic analyzers of the top-hat type and a detector in the form of an annular micro-channel plate with a position-sensitive readout. Each sensor covers the range 0-180 degrees with respect to the spin axis, and they are mounted opposite each other with a view perpendicular to the spin axis, thus covering the complete angular range in a half rotation of the spacecraft. The field of view perpendicular to the fan is 2 degrees for the LEEA and 5.6 degrees for the HEEA. Energy resolution (Delta-E)/E is 0.13 for LEEA and 0.16 for HEEA. There are four sweep modes, synchronized to the spin period (4 s), to vary the azimuthal angular resolution. The spin phasing can be made coincident with that of the CIS instrument, to ensure that the electron and ion moments will be measured simultaneously. On-board processing is used to calculate the moments of the distribution with an accuracy of 1% and to select suitable parts of the complete distribution for transmission. The normal science data format is based on one spin period, and consists of core data followed by other optional distributions as can be fit into the available telemetry for that spin. The core data (moments, spacecraft potential, and pitch angle distribution) are always transmitted (if the spin is nominal). The next distribution is transmitted if, before the end of the spin, all the previous data have been sent. Thus the next spin of data will be transmitted slightly late, but all of its core data will be transmitted before the following spin of data is started on. Eventually the transmission will catch up and be able to transmit the distribution after the core again, but only after some time. This applies at all telemetry rates. The instrument can adapt automatically to six different telemetry rates: a basic 1.52 Kbps rate (CIS priority); a normal 2.52 Kbps rate; an enhanced PEACE priority rate of 3.54 Kbps; and three burst mode rates, with a maximum of 15.98 Kbps. For more details of the Cluster mission, the spacecraft, and its instruments, see the report Cluster: mission, payload and supporting activities, March 1993, ESA SP-1159, and the included article PEACE: a Plasma Electron and Current Experiment, by A. D. Johnstone et al., from which this information was obtained. NASA, Dr. Andrew N. Fazakerley, European Space Agency spase://SMWG/Person/Elena.Budnik TechnicalContact NSSDC Master Catalog listing for Cluster II Tango Plasma Electron and Current Experiment (PEACE) http://nssdc.gsfc.nasa.gov/nmc/experimentDisplay.do?id=2000-045A-05 This site provides information concerning the Cluster II Tango Plasma Electron and Current Experiment Instrument. spase://SMWG/Repository/CDPP/AMDA Online Open AMDA at CDPP http://amda.cdpp.eu NetCDF NASA, Dr. Andrew N. Fazakerley CSA Calibrated Cluster II Tango Prime Parameter Plasma Electron and Current Experiment (PEACE) Data Calibrated spase://CDPP/Instrument/AMDA/Cluster-Tango/PEACE ThermalPlasma 2001-01-09T15:15:32Z 2013-06-30T12:59:57Z PT4S PT160S Earth.Magnetosheath Earth.Magnetosphere Earth.Magnetosphere.Magnetotail Earth.Magnetosphere.Main Earth.Magnetosphere.Polar Earth.Magnetosphere.RadiationBelt Earth.NearSurface.AuroralRegion Earth.NearSurface.Ionosphere Earth.NearSurface.Plasmasphere Earth.NearSurface.PolarCap Heliosphere.NearEarth 4 second magnetosphere auroral region polar cap cusp bow shock solar wind magnetosheath Cluster magnetotail lobe density c4_pea_dens Cluster II Tango Prime Parameter Plasma Electron and Current Experiment electron number density at spin time resolution phys.density;phys.electron cm^-3 1.0e6>m^-3 TimeSeries Ne 0.1000 1000 0.1000 1000 -1.0000e+31 Electron Scalar NumberDensity v_gse c4_pea_vgse Cluster II Tango Prime Parameter Plasma Electron and Current Experiment electron velocity at spin time resolution phys.veloc;phys.electron km/s 1.0e3>m s^-1 Cartesian GSE TimeSeries -1000 1000 3 vx Component.I 1 c4_pea_vgse(0) vy Component.J 2 c4_pea_vgse(1) vz Component.K 3 c4_pea_vgse(2) -10000 10000 -1.0000e+31 Electron Vector Velocity v_gsm c4_pea_vgsm Cluster II Tango Prime Parameter Plasma Electron and Current Experiment electron velocity at spin time resolution phys.veloc;phys.electron km/s 1.0e3>m s^-1 Cartesian GSM TimeSeries -1000 1000 3 vx Component.I 1 c4_pea_vgsm(0) vy Component.J 2 c4_pea_vgsm(1) vz Component.K 3 c4_pea_vgsm(2) -10000 10000 -1.0000e+31 Electron Vector Velocity v_para_gse c4_pea_vpar Cluster II Tango Prime Parameter Plasma Electron and Current Experiment electron velocity at spin time resolution phys.veloc;phys.electron km/s 1.0e3>m s^-1 Cartesian GSE TimeSeries -1000 1000 3 vx Component.I 1 c4_pea_vpar(0) vy Component.J 2 c4_pea_vpar(1) vz Component.K 3 c4_pea_vpar(2) -10000 10000 -1.0000e+31 Electron Vector Velocity v_para_gsm c4_pea_vpar_gsm Cluster II Tango Prime Parameter Plasma Electron and Current Experiment electron velocity at spin time resolution phys.veloc;phys.electron km/s 1.0e3>m s^-1 Cartesian GSM TimeSeries -1000 1000 3 vx Component.I 1 c4_pea_vpar_gsm(0) vy Component.J 2 c4_pea_vpar_gsm(1) vz Component.K 3 c4_pea_vpar_gsm(2) -10000 10000 -1.0000e+31 Electron Vector Velocity v_perp_gse c4_pea_vperp Cluster II Tango Prime Parameter Plasma Electron and Current Experiment electron velocity at spin time resolution phys.veloc;phys.electron km/s 1.0e3>m s^-1 Cartesian GSE TimeSeries -1000 1000 3 vx Component.I 1 c4_pea_vperp(0) vy Component.J 2 c4_pea_vperp(1) vz Component.K 3 c4_pea_vperp(2) -10000 10000 -1.0000e+31 Electron Vector Velocity v_perp_gsm c4_pea_vperp_gsm Cluster II Tango Prime Parameter Plasma Electron and Current Experiment electron velocity at spin time resolution phys.veloc;phys.electron km/s 1.0e3>m s^-1 Cartesian GSM TimeSeries -1000 1000 3 vx Component.I 1 c4_pea_vperp_gsm(0) vy Component.J 2 c4_pea_vperp_gsm(1) vz Component.K 3 c4_pea_vperp_gsm(2) -10000 10000 -1.0000e+31 Electron Vector Velocity heat_flux_gse c4_pea_flux Cluster II Tango Prime Parameter Plasma Electron and Current Experiment parallel electron heat flux at spin time resolution phys.heatflux;phys.atmol.ionStage microW/m^2 TimeSeries 3 flux_x 1 c4_pea_flux(0) flux_y 1 c4_pea_flux(1) flux_z 1 c4_pea_flux(2) Electron Vector HeatFlux pressure_gse c4_pea_press Cluster II Tango Prime Parameter Plasma Electron and Current Experiment parallel pressure tensor at spin time resolution phys.pressure microW/m^2 Cartesian GSE TimeSeries 3 xx 1 c4_pea_press(0) yy 2 c4_pea_press(4) zz 3 c4_pea_press(8) Electron Tensor Pressure t_para c4_pea_tpar Cluster II Tango Prime Parameter Plasma Electron and Current Experiment parallel electron temperature at spin time resolution phys.temperature;phys.electron eV TimeSeries -1.0000e+31 Electron Scalar Temperature t_perp c4_pea_tperp Cluster II Tango Prime Parameter Plasma Electron and Current Experiment perpendicular electron temperature at spin time resolution phys.temperature;phys.electron eV TimeSeries Electron Scalar Temperature