Three-dimensional track reconstruction for directional Dark Matter detection

Abstract

Directional detection of Dark Matter is a promising search strategy. However, to perform such detection, a given set of parameters has to be retrieved from the recoiling tracks : direction, sense and position in the detector volume. In order to optimize the track reconstruction and to fully exploit the data of forthcoming directional detectors, we present a likelihood method dedicated to 3D track reconstruction. This new analysis method is applied to the MIMAC detector. It requires a full simulation of track measurements in order to compare real tracks to simulated ones. We conclude that a good spatial resolution can be achieved, i.e. sub-mm in the anode plane and cm along the drift axis. This opens the possibility to perform a fiducialization of directional detectors. The angular resolution is shown to range between 20${}^{\circ }$ to 80${}^{\circ }$, depending on the recoil energy, which is however enough to achieve a high significance discovery of Dark Matter. On the contrary, we show that sense recognition capability of directional detectors depends strongly on the recoil energy and the drift distance, with small efficiency values (50%-70%). We suggest not to consider this information either for exclusion or discovery of Dark Matter for recoils below 100 keV and then to focus on axial directional data.

27 pages, 20 figures

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Cited by in corpus (21)

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• Readout strategies for directional dark matter detection beyond the neutrino background
• Readout technologies for directional WIMP Dark Matter detection
• A Dark Matter Hurricane: Measuring the S1 Stream with Dark Matter Detectors
• Probing the Local Velocity Distribution of WIMP Dark Matter with Directional Detectors
• New directional signatures from the non-relativistic effective field theory of dark matter
• Reconstructing the three-dimensional local dark matter velocity distribution
• Low energy electron/recoil discrimination for directional Dark Matter detection
• MIMAC low energy electron-recoil discrimination measured with fast neutrons
• Discretising the velocity distribution for directional dark matter experiments
• MIMAC: A micro-tpc matrix for dark matter directional detection
• In situ measurement of the electron drift velocity for upcoming directional Dark Matter detectors
• Simulations of the 3-Dimensional Velocity Distribution of Halo Weakly Interacting Massive Particles for Directional Dark Matter Detection Experiments
• TREX-DM: a low background Micromegas-based TPC for low mass WIMP detection
• Directionality and head-tail recognition in the keV-range with the MIMAC detector by deconvolution of the ionic signal
• Probing light WIMPs with directional detection experiments
• Dark Matter Directionality Revisited with a High Pressure Xenon Gas Detector
• Observation of electron excitation into silicon conduction band by slow-ion surface neutralization
• TREX-DM: a low background Micromegas-based TPC for low-mass WIMP detection
• Development of a microtpc detector as a standard instrument for low energy neutron field characterization
• State of the Art in Direct Dark Matter Detectors: Technologies, Performance, and Future Directions