| Name | STAFF-DWP, search coil magnetometer - wave-particle experiment | ||||||||||
| Mission | Double Star | ||||||||||
| URL | https://csa.esac.esa.int/csa-web/#search | ||||||||||
| DOI | https://doi.org/10.5270/esa-nv27tmc | ||||||||||
| Abstract | The STAFF/DWP wave experiment onboard the TanCe-1 (TC1) satellite of the Double Star Program (DSP) consists of a three-axial search coil magnetometer, three pre-amplifiers, a Magnetic Wave Form unit (MWF), a power supply and a Digital Wave Processor. The three first elements are spares of the Cluster STAFF experiment and the power supply is a spare of the Cluster Wave Experiment Consortium (WEC), all provided by LPP (CNRS) and the Digital Wave Processor, based on the Cluster DWP experiment, provided by the University of Sheffield. The three-axis search coil magnetometer aims to measure magnetic fluctuations in the frequency range 0.1 Hz-4 kHz. The three mutually orthogonal sensors are mounted on a rigid boom that should have deployed away from the spacecraft body. Unfortunately, the STAFF antenna boom failed to deploy, which means interference from the spacecraft systems is very high. Even so, useful measurements can still be made. Two sensors lie in the spin plane and the third one is parallel to the spacecraft spin axis. The Magnetic Wave Form data are routinely provided in the frequency range 0.1- 10 Hz. The Digital Wave Processor on TC1 is derived from the Cluster DWP. As on Cluster it performs onboard MWF data compression, handles all telemetry and commanding for STAFF, and calculates the auto-correlations of electron counts received from PEACE. DWP contains a particle correlator experiment which computes the auto-correlation of electron counts received by the PEACE HEEA sensor via an inter-experiment link. In addition to Cluster, DWP calculates onboard the spectral matrix of the three magnetic wave data in the frequency range 10Hz - 4kHz (which is on cluster performed by the STAFF Spectrum Analyser, STAFF SA). | ||||||||||
| Description | STAFF-DWP scientific datasets
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| Publication | Cornilleau-Wehrlin, N., et al., The STAFF-DWP wave instrument on the DSP equatorial spacecraft: description and first results, Ann. Geophys., 23, 2785-2801, 2005; https://doi.org/10.5194/angeo-23-2785-2005 | ||||||||||
| Temporal Coverage | 2003-12-29T19:06:00.000Z - 2009-12-31T23:59:59.000Z | ||||||||||
| Mission Description | The Double Star Program (DSP) is the first mission in collaboration between China and ESA. The mission is made of two spacecraft to investigate the magnetospheric global processes and their response to the interplanetary disturbances in conjunction with the Cluster mission. The first spacecraft, TC-1 (Tan Ce means "Explorer"), was launched on 29 December 2003, and the second one, TC-2, on 25 July 2004 on board two Chinese Long March 2C rockets. TC-1 was injected in an equatorial orbit of 570x79000 km altitude with a 28° inclination and TC-2 in a polar orbit of 560x38000 km altitude. The orbits have been designed to complement the Cluster mission by maximizing the time when both Cluster and Double Star are in the same scientific regions. The two missions allow simultaneous observations of the Earth magnetosphere from six points in space. To facilitate the comparison of data, half of the Double Star payload is made of spare or duplicates of the Cluster instruments; the other half is made of Chinese instruments. Liu, Z.X., C.P. Escoubet, Z. Pu, H. Laakso, J.K. Shi, C. Shen, M. Hapgood, The Double Star Mission, Ann. Geophys., 23, 2707-2712, 2005; https://doi.org/10.5194/angeo-23-2707-2005 |
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| Creator Contact | Misha Balikhin, Principal Investigator, Sheffield University, United Kingdom Nicole Cornilleau-Wehrlin, Principal Investigator, Laboratoire de Physique des Plasmas, Ecole Polytechnique/Sorbonne Université/CNRS |
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| Publisher And Registrant | European Space Agency | ||||||||||
| Credit Guidelines | When publishing any works related to this experiment, please cite the experiment DOI found herein and mission DOI (where appropriate). |