We have studied gain vs. voltage characteristics and position resolutions of multistep capillary plates (two or three capillary plates operating in a cascade), as well as capillary plates operating in a mode when the main amplification occurs between plates or between the capillary plate and the readout plate (parallel plate amplification mode). Results of these studies demonstrated that in the parallel-plate amplification mode one can reach both high gains (>100000) and good position resolutions (~100 micro meter) even with a single step arrangement. It offers a compact amplification structure, which can be used in many applications. For example, in preliminary tests we succeeded to combine it with a photocathode and use it as a position sensitive gaseous photomultiplier. CsI coated capillary plates could also be used as a high position resolution and high rate X-ray converter.
@article{arxiv.physics/0403108,
title = {Study of capillary-based gaseous detectors},
author = {C. Iacobaeus and T. Francke and M. Danielsson and J. Ostling and V. Peskov},
journal= {arXiv preprint arXiv:physics/0403108},
year = {2009}
}
Comments
Presented at the NSS IEEE 2003 conference in Portland, submitted to TNS