Development of a transparent single-grid-type MSGC based on LCD technology

Hiroyuki Takahashi,Kenji Shimazoe,Lian Xuan,Hiroaki Miyoshi,Yuki Mitsuya,Masashi Ohno,Takeshi Iimoto,S Dalla Torre,L Ropelewski,B Gobbo,S Levorato,F Tessarotto

doi:10.1051/epjconf/201817402004

Abstract

We are developing a multi-grid-type MSGC based on the liquid crystal display (LCD) technology, which enables a large area and fine structure. Single-grid-type MSGC using transparent electrodes has been fabricated and successfully operated in several different gas mixtures. The use of LCD technology allows us to integrate some simple electronics using thin film transistors. Such an integrated device is our next target. The successful operation of Single-grid-type MSGC is the very important first step for us.

Highlights

We are working on the use of microfabrication techniques to the radiation detection for almost 20 years
We studied on MSGC (MicroStrip Gas Chamber), Glass GEM (Gas electron multiplier), and dedicated ASIC (Application Specific Integrated Circuit)
People are almost forgetting about the MSGC [1], during these decades, big progress has been made in the microfabrication techniques on the glass, in particular, in the field of liquid crystal display (LCD)

Summary

Introduction

We are working on the use of microfabrication techniques to the radiation detection for almost 20 years. This is definitely compact, efficient, and cost-effective. We can use induced charge [5], or direct coupling to the MSGC cathode Based on such an idea, we are intensively working on the development of new generation MSGC. If we use optical signals as the interface from micropattern gas detector to the readout circuit, we are completely free from the damage problem. We report some of the initial results in this paper

Design and fabrication of transparent MSGC with a single grid

Charge signal measurements

Optical signal readout

Integration of readout circuits

Conclusions