Towards an improved magnetic diagnostic system for LISA

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Mateos, I.; Lobo, A.; Ramos-Castro, J.; Sanjun, J.; Nofrarias, M.: Towards an improved magnetic diagnostic system for LISA. In: Journal of Physics: Conference Series 154 (2009), 12005. DOI:

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Sum total of downloads: 21

The current design, and material implementation of the magnetic field sensing in the LISA Technology Package (LTP) on board LISA Pathfinder (LPF), is based on a set of 4 high-precision 3-axis fluxgate magnetometers. In order to avoid magnetic disturbances on the LTP proof masses (TM 's), originated by the sensors themselves, these are placed somewhat far from the TM's, which results in partial field information losses. We are currently investigating alternative magnetic sensing techniques, based on AMR (Anisotropic Magnetoresistive) devices. These are much smaller in size than fluxgates, therefore a more numerous array can be thought of for flight. In addition, there is a chance that they may be attached closer to the TM's, thereby enhancing magnetic field sensing spacial resolution. Several issues need to be addressed, such as real sensitivity (including electronics noise) and set/reset trigger procedures. A brief overview about the stability of the magnetic fields and gradients generated in the LTP by means of the coil will also be given. This paper show the latest results of our research.
License of this version: CC BY 3.0
Document Type: article
Publishing status: publishedVersion
Issue Date: 2009
Appears in Collections:An-Institute

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1 image of flag of Germany Germany 18 85.71%
2 image of flag of Italy Italy 1 4.76%
3 image of flag of Spain Spain 1 4.76%
4 image of flag of China China 1 4.76%

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