E. J. Brookes
A5017887428- Dark Matter and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Atomic and Subatomic Physics Research
- Neutrino Physics Research
- Cosmology and Gravitation Theories
- Particle Detector Development and Performance
- Astrophysics and Cosmic Phenomena
- Quantum, superfluid, helium dynamics
- Particle accelerators and beam dynamics
- Radiation Detection and Scintillator Technologies
- Nuclear Physics and Applications
- Particle Accelerators and Free-Electron Lasers
- Pulsars and Gravitational Waves Research
- Gaussian Processes and Bayesian Inference
National Institute for Subatomic Physics
2022-2024
University of Amsterdam
2022-2024
University of Zurich
2023
Xenon Pharmaceuticals (Canada)
2023
Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
2023
We report on the first search for nuclear recoils from dark matter in form of weakly interacting massive particles (WIMPs) with XENONnT experiment, which is based a two-phase time projection chamber sensitive liquid xenon mass 5.9 ton. During (1.09±0.03) ton yr exposure used this search, intrinsic ^{85}Kr and ^{222}Rn concentrations target are reduced to unprecedentedly low levels, giving an electronic recoil background rate (15.8±1.3) events/ton keV region interest. A blind analysis events...
The nature of dark matter and properties neutrinos are among the most pressing issues in contemporary particle physics. dual-phase xenon time-projection chamber is leading technology to cover available parameter space for Weakly Interacting Massive Particles (WIMPs), while featuring extensive sensitivity many alternative candidates. These detectors can also study through neutrinoless double-beta decay a variety astrophysical sources. A next-generation xenon-based detector will therefore be...
The multi-staged XENON program at INFN Laboratori Nazionali del Gran Sasso aims to detect dark matter with two-phase liquid xenon time projection chambers of increasing size and sensitivity. XENONnT experiment is the latest detector in program, planned be an upgrade its predecessor XENON1T. It features active target 5.9 tonnes cryogenic (8.5 total mass cryostat). expected extend sensitivity WIMP by more than order magnitude compared XENON1T, thanks larger significantly reduced background,...
Abstract The precision in reconstructing events detected a dual-phase time projection chamber depends on an homogeneous and well understood electric field within the liquid target. In XENONnT TPC homogeneity is achieved through double-array cage, consisting of two nested arrays shaping rings connected by easily accessible resistor chain. Rather than being to gate electrode, topmost ring independently biased, adding degree freedom tune during operation. Two-dimensional finite element...
Multiple viable theoretical models predict heavy dark matter particles with a mass close to the Planck mass, range relatively unexplored by current experimental measurements. We use 219.4 days of data collected XENON1T experiment conduct blind search for signals from multiply interacting massive (MIMPs). Their unique track signature allows targeted analysis only 0.05 expected background events muons. Following unblinding, we observe no signal candidate events. This Letter places strong...
Abstract Xenon dual-phase time projections chambers (TPCs) have proven to be a successful technology in studying physical phenomena that require low-background conditions. With $$40\,\textrm{t}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>40</mml:mn> <mml:mspace /> <mml:mtext>t</mml:mtext> </mml:mrow> </mml:math> of liquid xenon (LXe) the TPC baseline design, DARWIN will high sensitivity for detection particle dark matter, neutrinoless double beta decay (...
Abstract The XENONnT detector uses the latest and largest liquid xenon-based time projection chamber (TPC) operated by XENON Collaboration, aimed at detecting Weakly Interacting Massive Particles conducting other rare event searches. data acquisition (DAQ) system constitutes an upgraded expanded version of XENON1T DAQ system. For its operation, it relies predominantly on commercially available hardware accompanied open-source custom-developed software. three constituent subsystems detector,...
We developed a detector signal characterization model based on Bayesian network trained the waveform attributes generated by dual-phase xenon time projection chamber. By performing inference model, we produced quantitative metric of and demonstrate that this can be used to determine whether is sourced from scintillation or an ionization process. describe method its performance electronic-recoil (ER) data taken during first science run XENONnT dark matter experiment. use in waveform-based...
We report on the first search for nuclear recoils from dark matter in form of weakly interacting massive particles (WIMPs) with XENONnT experiment which is based a two-phase time projection chamber sensitive liquid xenon mass $5.9$ t. During approximately 1.1 tonne-year exposure used this search, intrinsic $^{85}$Kr and $^{222}$Rn concentrations target were reduced to unprecedentedly low levels, giving an electronic recoil background rate $(15.8\pm1.3)~\mathrm{events}/(\mathrm{t\cdot y \cdot...
This paper details the first application of a software tagging algorithm to reduce radon-induced backgrounds in liquid noble element time projection chambers, such as XENON1T and XENONnT. The convection velocity field was mapped out using <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mmultiscripts><a:mrow><a:mi>Rn</a:mi></a:mrow><a:mprescripts/><a:none/><a:mrow><a:mn>222</a:mn></a:mrow></a:mmultiscripts></a:mrow></a:math> <c:math...
We perform a blind search for particle signals in the XENON1T dark matter detector that occur close time to gravitational-wave LIGO and Virgo observatories.No signal is observed nuclear recoil electronic channels within ±500 seconds of observations GW170104, GW170729, GW170817, GW170818, GW170823.We use this null result constrain monoenergetic neutrinos axion-like particles emitted closest coalescence binary neutron star merger.We set new upper limits on fluence (time-integrated flux)...
The precision in reconstructing events detected a dual-phase time projection chamber depends on an homogeneous and well understood electric field within the liquid target. In XENONnT TPC homogeneity is achieved through double-array cage, consisting of two nested arrays shaping rings connected by easily accessible resistor chain. Rather than being to gate electrode, topmost ring independently biased, adding degree freedom tune during operation. Two-dimensional finite element simulations were...