We present an original design for large area gaseous detectors based on the MICROMEGAS technology. This technology incorporates an insulating grid, sandwiched between the micro-mesh and the anode-pad plane, which provides an uniform 200 μm amplification gap. The uniformity of the amplification gap thickness has been verified under several experimental conditions. The gain performances of the detector are presented and compared to the values obtained with detectors using cylindrical micro spacers. The new design presents several technical and financial advantages.
@article{arxiv.physics/0103027,
title = {An insulating grid spacer for large-area MICROMEGAS chambers},
author = {D. Bernard and H. Delagrange and D. G. d'Enterria and M. Le Guay and G. Martínez and M. J. Mora and P. Pichot and D. Roy and Y. Schutz and A. Gandi and R. de Oliveira},
journal= {arXiv preprint arXiv:physics/0103027},
year = {2016}
}