Speaker
Description
Cosmic ray muon tomography is a novel technology for high-Z material detection with high penetration and intrinsic safety feature. Several muon imaging facilities had been setup all over the world based on different types of detectors, such as drift tube, drift chamber, GEM, RPC, scintillator and so on. We have been studied muon technology for many years and a prototype of Tsinghua University cosmic ray MUon Tomography facilitY (TUMUTY) was set up in our laboratory. In order to get the energy information of incident muons, MRPC is used as track detector and its signal is amplified with fast current amplifier. 5GHz waveform digitizer is used to record the pulse shape. A kind of large area MRPC with high position resolution is studied. The dimension is 1160mm×1160mm and it consists of six gaps and the width of gap is 0.25mm. The counter has 422 1.44mm read out strips with 1.1mm gap between strips (the width of the pitch is 2.54mm). 98% efficiency is obtained in cosmic test. We also measured its spatial resolution by an X ray source with a narrow slit, the position resolution is around 367µm. In this paper, we introduce the development of detector, and we also discuss the cosmic test and X-ray test. The results of test kits by TUMUTY are also described. Rresentation type:Oral
