Henrique Araujo is an experimental astroparticle physicist with the High Energy Physics group at Imperial. His work focuses on the direct detection of dark matter, the elusive substance thought to constitute most of the mass in the universe. Large physics experiments located deep underground attempt to detect the very faint and rare collisions of the mysterious dark matter particles with ordinary atoms at the core of very sensitive radiation detectors.
Henrique was involved in the ZEPLIN dark matter search located at the Boulby Underground Laboratory (UK) for about a decade; the programme developed the use of two-phase xenon technology for dark matter searches. He was data analysis coordinator for ZEPLIN-III and became spokesperson for the collaboration in 2010. He joined the Large Underground Xenon (LUX) experiment in 2012. LUX was installed at the 4850-ft level of the Sanford Underground Research Facility (SURF), located in the former Homestake mine in South Dakota, US. LUX published several world leading dark matter searches until 2017.
Since 2012 he has led the UK teams developing the international LUX-ZEPLIN (LZ) experiment, and he co-led the development of the LZ Xenon Detector from design through to the end of construction in 2020. LZ will operate at SURF from 2021 and will probe popular models of particle dark matter and rare astrophysical neutrino interactions.
Henrique has also developed radiation detection instruments for spacecraft. He collaborated with the Rutherford Appleton Laboratory and the European Space Agency on the Highly Miniaturised Radiation Monitor (HMRM), a miniature instrument to characterise the radiation environment in Earth orbit. Previously, he was involved in the design of the LISA Pathfinder Radiation Monitor.
He is Co-Director of Research (Physics) and a member of the Executive Committee of the Department of Physics at Imperial.
et al., 2021, Improving sensitivity to low-mass dark matter in LUX using a novel electrode background mitigation technique, Physical Review D, Vol:104, ISSN:2470-0010
et al., 2020, Discrimination of electronic recoils from nuclear recoils in two-phase xenon time projection chambers, Physical Review D: Particles, Fields, Gravitation and Cosmology, Vol:102, ISSN:1550-2368, Pages:1-27
et al., 2020, The LUX-ZEPLIN (LZ) radioactivity and cleanliness control programs, European Physical Journal C: Particles and Fields, Vol:80, ISSN:1124-1861, Pages:1-52
et al., 2020, Investigation of background electron emission in the LUX detector, Physical Review D: Particles, Fields, Gravitation and Cosmology, Vol:102, ISSN:1550-2368, Pages:1-17
et al., 2020, Search for two neutrino double electron capture of(124)Xe and(126)Xe in the full exposure of the LUX detector, Journal of Physics G: Nuclear and Particle Physics, Vol:47, ISSN:0954-3899, Pages:1-13