Speaker
Description
Resistive plate chambers (RPC) are parallel plate gaseous detectors, made with relatively low cost materials, robust in fabrication and handling, and offer excellent time and position resolutions (up to 50 ps and tens of micrometers, respectively). RPCs have been used for muon identification in high energy physics experiments, including collider physics experiments, neutrino physics experiments, etc. From less than two decades, RPCs are being used for societal applications as well, including medicine, muography applications, etc. The RPC electrodes are usually made of a high resistive material (typically, bakelite or float glass), with a bulk resistivity of 10^10 – 10^12 Ω.cm. At NISER, we are developing RPCs using Bakelite electrodes in motivation towards using them for muon radiography applications. In general, to make the inner surfaces of the Bakelite electrodes smoother, they are coated with linseed oil, which helps to reduce the micro discharge probability and also reduces the surface UV sensitivity. We coated one 1 cm x 1 cm Bakelite sample with raw linseed oil and another with double boiled linseed oil, which is added with drying agents. The Raman Spectroscopy analysis results on these samples will be presented. We have developed RPCs using 0.1 cm thick Bakelite electrodes of 20 cm x 20 cm size without linseed oil coating, coated with both raw and double boiled linseed oil, and studied their I-V characteristics, signals rate and efficiency. These results will be presented.
| Session | Future Experiments and Detector Development |
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