Response of multi-strip multi-gap resistive plate chamber

Abstract

A prototype of Multi-strip Multi-gap Resistive Plate chamber (MMRPC) with active area 40 cm × 20 cm has been developed at SINP, Kolkata. Detailed response of the developed detector was studied with the pulsed electron beam from ELBE at Helmholtz-Zentrum DresdenRossendorf. In this report the response of SINP developed MMRPC with different controlling parameters is described in details. The obtained time resolution (σ t ) of the detector after slew correction was 91.5±3 ps. Position resolution measured along (σ x ) and across (σ y ) the strip was 2.8±0.6 cm and 0.58 cm, respectively. The measured absolute efficiency of the detector for minimum ionizing particle like electron was 95.8±1.3 %. Better timing resolution of the detector can be achieved by restricting the events to a single strip. The response of the detector was mainly in avalanche mode but a few percentage of streamer mode response was also observed. A comparison of the response of these two modes with trigger rate was studied.

The radiation gas detectors with novel nanoporous converter for medical imaging applications

“…From simulation point of view, the Monte Carlo code such as GEANT4 is currently used to simulate the QE of a bulk photoconverter [8][9][10][11][12]. Although the validation of GEANT4 code for simulating the detection efficiency of gas radiation detectors coupled to a converter is confirmed, but, in this simulation, the user-friendly GATE code based on the GEANT4 toolkit is used [17,18].…”

“…So an optimum thickness for the bulk converter exists. Since, the conversion efficiency in this case is not enough high, the idea of multi-layer gas detectors with thinner bulk converters [8,9,11,12] was introduced. But this approach has structural and functional complexity.…”