Some Studies Using Capillary for Flow Control in a Closed Loop Gas Recirculation System

A Pilot unit of a Closed Loop System (CLS) mixing and distribution system for the INO project (INO-Collaboration, India-based neutrino observatory, Technical Report INO/2006/01, Tata Institute of Fundamental Research, 2006, [1]) is designed and is being operated with 12 RPCs of size ((1.740 times 1.845)) m(^2). The performance of an RPC [2] depends on the quantity and quantity of gas mixture being used, a number of studies on controlling the flow and optimization of the gas mixture is being carried out. In this paper the flow versus the pressure variation with a capillary (flow resistor), with different types of gasses that are being used in an RPC is presented.