DMTPC-10L: Direction-Sensitive Dark Matter Detector Prototype

Details DMTPC-10L: Direction-Sensitive Dark Matter Detector Prototype DMTPC-10L: Direction-Sensitive Dark Matter Detector Prototype

2008-10-15

arxiv.org/abs/0810.2769v1

Physics

Instrumentation and Detectors

Presented at the 34th International Conference on High Energy Physics, Philadelphia, 2008

Scientific paper

The known direction of motion of dark matter particles relative to the Earth may be a key for their unambiguous identification even in the presence of backgrounds. We describe a prototype detector that is able to reconstruct direction vectors of weakly interacting massive particles that may the dominant constituent of the dark matter in our galaxy. The detector uses a low-density gas (CF4) in a 10liter time-projection chamber with mesh-based electrodes and optical and charge readout. Initial results confirm good performance in the reconstruction of direction angle and sense ('head-tail') for low-momentum nuclear recoils.

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