Development of a two-dimensional imaging GEM detector using the resistive anode readout method with $6\times6$ cells

TL;DR

This paper presents a two-dimensional imaging GEM detector with resistive anode readout, demonstrating high spatial resolution and good imaging performance, suitable for large-area applications.

Contribution

It introduces a novel resistive anode readout method with a 6x6 cell configuration and new electronics, enhancing imaging capabilities of GEM detectors.

Findings

Spatial resolution of about 103.46 μm

Detector nonlinearity less than 1.5%

Effective 2D imaging demonstrated

Abstract

We report the application of the resistive anode readout method on a two dimensional imaging GEM detector. The resistive anode consists of $6\times6$ cells with the cell size $6~\mathrm{mm}\times6~\mathrm{mm}$. New electronics and DAQ system are used to process the signals from the 49 readout channels. The detector has been tested by using the X-ray tube (8~keV). The spatial resolution of the detector is about $103.46~\mathrm{{\mu}m}$ with the detector response part about $66.41~\mathrm{{\mu}m}$. The nonlinearity of the detector is less than $1.5\%$. A quite good two dimensional imaging capability is achieved as well. The performances of the detector show the prospect of the resistive anode readout method for the large readout area imaging detectors.