The latest generation of Micromegas detectors show a good energy resolution, spatial resolution and low threshold, which make them idoneous in low energy applications. Two micromegas detectors have been built for dark matter experiments: CAST, which uses a dipole magnet to convert axion into detectable x-ray photons, and MIMAC, which aims to reconstruct the tracks of low energy nuclear recoils in a mixture of CF4 and CHF3. These readouts have been respectively built with the microbulk and bulk techniques, which show different gain, electron transmission and energy resolutions. The detectors and the operation conditions will be described in detail as well as their discrimination capabilities for low energy photons will be discussed.
@article{arxiv.1110.2643,
title = {The discrimination capabilities of Micromegas detectors at low energy},
author = {F. J. Iguaz and T. Dafni and E. Ferrer-Ribas and J. Galán and J. A. García and A. Gardikiotis and I. Giomataris and I. G. Irastorza and J. P. Mols and T. Papaevangelou and A. Rodríguez and A. Tomás and T. Vafeiadis and C. Yildiz},
journal= {arXiv preprint arXiv:1110.2643},
year = {2011}
}
Comments
To be published in the proceedings of the TIPP2011 conference (Physics Procedia)