Advances towards a large-area, ultra-low-gas-consumption RPC detector

Large Resistive Plate Chamber systems have their roots in High Energy Physics experiments at the European Organization for Nuclear Research: ATLAS, CMS and ALICE, where hundreds of square meters of both trigger and timing RPCs have been deployed. These devices operate with complex gas systems, equipped with re-circulation and purification units, which require a fresh gas supply of the order of 6 cm3/min/m2, creating logistical, technical and financial problems.In this communication, we present a new concept in the construction of RPCs which allowed us to operate a detector at ultra-low gas flow regime. With this new approach, the glass stack is encapsulated in a tight plastic box made of polypropylene, which presents excellent water vapor blocking properties as well as a good protection against atmospheric gases.

Automated summary

Large Resistive Plate Chamber (RPC) systems, developed from High Energy Physics experiments, are used in ATLAS, CMS, and ALICE experiments. These systems operate with complex gas systems and require a significant supply of fresh gas, causing logistical, technical, and financial challenges. This study presents a new concept in RPC construction that allows for operation at ultra-low gas flow rates by encapsulating the glass stack in a tight plastic box with excellent water vapor blocking properties and protection against atmospheric gases.