Direction measurement of weakly interacting massive particles in time-projection chambers can provide definite evidence of their existence and help to determine their properties. This article demonstrates several concepts for charge amplification in time-projection chambers that can be used in direction-sensitive dark matter search experiments. We demonstrate reconstruction of the 'head-tail' effect for nuclear recoils above 100keV, and discuss the detector performance in the context of dark matter detection and scaling to large detector volumes.
@article{arxiv.0804.4827,
title = {Charge amplification concepts for direction-sensitive dark matter detectors},
author = {D. Dujmic and P. Fisher and G. Sciolla and S. Ahlen and V. Dutta and S. Henderson and A. Kaboth and G. Kohse and R. Lanza and J. Monroe and A. Roccaro and N. Skvorodnev and H. Tomita and R. Vanderspek and H. Wellenstein and R. Yamamoto},
journal= {arXiv preprint arXiv:0804.4827},
year = {2008}
}