Measurement of characteristic impedance of silicon fiber sheet based readout strip panel for RPC detector in INO

Abstract

The India based Neutrino Observatory (INO) is a mega science project of India, which is going to use near about 30, 000 Resistive Plate Chambers (RPC) as active detector elements for the study of atmoshpheric neutrino oscillations. Each RPC detector will consist of two orthogonally placed readout strips panel for picking the signals generated in the gas chamber. The area of RPC detector in INO-ICAL (Iron Calorimeter) experiment will be 2m × 2m, therefore the dimension of readout strips panel will also be of 2m × 2m. To get undistorted signals pass through the readout strips panel to frontend electronics, their Characteristic Impedance should be matched with each other. For the matching of Characteristic Impedance we have used the principle of termination. In the present paper we will describe the need and search of new dielectric material for the fabrication of flame resistant, waterproof and flexible readout pickup strips panel. We will also describe the measurement of Characteristic Impedance of plastic honeycomb based readout strips panel and Silicon Fiber sheet based readout strips panel in a comparative way, and its variation under loading and with time.

Required sensitivity in the search of neutrinoless double beta decay in 124Sn

“…The TIN.TIN detector will use the cryogenic bolometer technique in closely packed module structure arrays [24]. This experiment will be housed at the India based Neutrino Observatory, an upcoming underground laboratory [24,25]. Although the natural abundance of 124 Sn isotope is only ∼ 5.8%, but its quite high Q ββ -value of 2287.7 keV makes it a good candidate for search of 0νββ [26,27].…”