Directional detection can provide unambiguous observation of Dark Matter interactions even in presence of insidious backgrounds. The DM-TPC collaboration is developing a detector with the goal of measuring the direction and sense of nuclear recoils produced in Dark Matter interactions. The detector consists of a Time Projection Chamber with optical readout filled with CF4 gas at low pressure. A collision between a WIMP and a gas molecule results in a nuclear recoil of 1-2 mm. The measurement of the energy loss along the recoil allows us to determine the sense and the direction of the recoil. Results from a prototype detector operated in a low-energy neutron beam clearly demonstrate the suitability of this approach to measure directionality. A cubic meter prototype, which is now being designed, will allow us to set competitive limits on spin-dependent Dark Matter interactions using a directional detector.
@article{arxiv.0806.2673,
title = {Toward directional detection of Dark Matter with the DM-TPC detector},
author = {G. Sciolla and S. Ahlen and D. Dujmic and V. Dutta and P. Fisher 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:0806.2673},
year = {2019}
}
Comments
Presented at the XX Rencontres de Blois, 4 pages, 4 figures