J
J Sanjuán
Researcher at Institut de Ciències de l'Espai
Publications - 39
Citations - 831
J Sanjuán is an academic researcher from Institut de Ciències de l'Espai. The author has contributed to research in topics: Engineering & Computer science. The author has an hindex of 8, co-authored 24 publications receiving 664 citations. Previous affiliations of J Sanjuán include University of Florida.
Papers
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Journal ArticleDOI
Extension of the LTP temperature diagnostics to the LISA band: first results
TL;DR: Theoretical limits of the temperature measurement system and the practical on-ground limitations to test them are shown demonstrating that 1/f noise is not observed in thermistors even at frequencies around 0.1 mHz and amplitude levels of 10 μK Hz −1/2.
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State-space modelling for heater induced thermal effects on LISA Pathfinder's Test Masses
Ferran Gibert,Miquel Nofrarías,M. Diaz-Aguilo,Alberto Lobo,Nikolaos Karnesis,Ignacio Mateos,J Sanjuán,Ivan Lloro,Lluis Gesa,Víctor S. Martín +9 more
TL;DR: In this paper, the authors report on the modelling of these simulated experiments, including the parametrisation of different thermal effects (radiation pressure effect, radiometer effect) that will appear in the Inertial Sensor environment of the LTP (LISA Technology Package).
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Compact optomechanical accelerometers for use in gravitational wave detectors
TL;DR: In this article , an optomechanical accelerometer for monitoring low-frequency noise in gravitational wave detectors, such as ground motion, is presented, where the test-mass motion of a 4.7 Hz mechanical resonator using a heterodyne interferometer is tracked.
Journal ArticleDOI
Proton irradiation test on the flight model radiation monitor for LISA Pathfinder
Ignacio Mateos,A. Lobo,Juan Ramos-Castro,J Sanjuán,M. Diaz-Aguilo,M. Diaz-Aguilo,P J Wass,Catia Grimani +7 more
TL;DR: The results obtained with a simulated flight model geometry using GEANT4 are shown, to be compared with the real data that will be obtained in a proton irradiation facility.
Journal ArticleDOI
Thermal coupling within LTP dynamics control loop
Miquel Nofrarías,A. F. Garcia Marin,Gerhard Heinzel,M. Hewitson,A. Lobo,J Sanjuán,Juan Ramos-Castro,Karsten Danzmann +7 more
TL;DR: In this article, a closed-loop analysis of the LISA Pathfinder mission's instrument response to thermal, magnetic or charged particle perturbations is presented. But this analysis is restricted to the case of thermal measurements.