Presentation on theme: "Cosmic Ray Test of INO RPC Stack M. Bhuyan 1, V.M. Datar 2, S.D. Kalmani 1, S.M. Lahamge 1, N.K. Mondal 1, P. Nagaraj 1, S. Pal 1, L.V. Reddy, A. Redij."— Presentation transcript:
Cosmic Ray Test of INO RPC Stack M. Bhuyan 1, V.M. Datar 2, S.D. Kalmani 1, S.M. Lahamge 1, N.K. Mondal 1, P. Nagaraj 1, S. Pal 1, L.V. Reddy, A. Redij 1, D. Samuel 1, M.N. Saraf 1, B. Satyanarayana 1, R.R. Shinde 1 and P. Verma 1 India-based Neutrino Observatory (INO) Collaboration 1 Department of High Energy Physics, Tata Institute of Fundamental Research, Mumbai 400005, India 2 Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
Plan of my talk Introduction to INO RPC system. Early results. Construction of 1m X 1m RPCs. Cosmic ray test stand and the DAQ system. RPC performance studies using cosmic muons. Monitoring long term stability of INO RPCs. Future outlook and summary.
4 INO Detector – Channel Count No of modules 3 Module dimension 16 m X 16 m X 12 m Detector dimension 48 m X 16 m X 12 m No of layers 140 Iron plate thickness 6 cm Gap for RPC trays 2.5 cm Magnetic field 1.5 Tesla RPC unit dimension 2 m X 2 m Readout strip width 2 cm No. of RPCs/Road/Layer 8 No. of Roads/Layer/Module 8 No. of RPC units/Layer 192 Total no of RPC units 27000 No of Electronic channels 3.6 X 10 6
5 5 Cosmic Muon Test using small RPCs Stack of 10 RPCs Gas unit Telescope DAQ
Constructional details of the gas system 10 F ront view Internal view Rear view
VME BASED DAQ SETUP X strip data Y strip data Timing info Digital Front End Analog Front End Trigger Module Event Trigger Event/ Monitor Data VME CRATE Scaler TDC Readout Module Linux based DAQ software (C++, Qt, ROOT) Interrupt Based Multi-Threaded Graphical User Interface Online 2D/3D Event Display RPC Strip Monitoring Online Error Reporting RPC Stack Poster by Deepak Samual for more details about INO DAQ
12 Design and implementation of the data acquisition system 200 boards of 13 types Custom designed using FPGA,CPLD,HMC,FIFO,SMD
Summary We have successfully built and operated Glass RPCS in avalanche mode. A stack of 12 such RPCs being used continuously to monitor their performances using cosmic muons. Currents and noise rates are being monitored over long periods. No degradation after 2.5 years of operation. The setup will be used for further studies and as a test stand to test new frontend electronics & DAQ.