Position Sensing from Charge Dispersion in Micro-Pattern Gas Detectors with a Resistive Anode

Details Position Sensing from Charge Dispersion in Micro-Pattern Gas Detectors with a Resistive Anode Position Sensing from Charge Dispersion in Micro-Pattern Gas Detectors with a Resistive Anode

2003-07-30

arxiv.org/abs/physics/0307152v2

Nucl.Instrum.Meth.A518:721-727,2004

Physics

Instrumentation and Detectors

14 pages, 8 figures, submitted to Nucl. Inst. Meth; typo in eqn 4 corrected, fig 2 updated accordingly

Scientific paper

10.1016/j.nima.2003.09.051

Micro-pattern gas detectors, such as the Gas Electron Multiplier (GEM) and the Micromegas need narrow high density anode readout elements to achieve good spatial resolution. A high-density anode readout would require an unmanageable number of electronics channels for certain potential micro-detector applications such as the Time Projection Chamber. We describe below a new technique to achieve good spatial resolution without increasing the electronics channel count in a modified micro-detector outfitted with a high surface resistivity anode readout structure. The concept and preliminary measurements of spatial resolution from charge dispersion in a modified GEM detector with a resistive anode are described below.

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