A method to adjust the impedance of the transmission line in a Multi-Strip Multi-Gap Resistive Plate Counter

TL;DR

This paper presents a novel method for adjusting the impedance of transmission lines in Multi-Strip Multi-Gap Resistive Plate Counters, crucial for trigger-less data recording where impedance matching impacts performance.

Contribution

The paper introduces an innovative RPC architecture enabling impedance matching regardless of granularity, addressing a key challenge in trigger-less data acquisition systems.

Findings

Impedance matching achieved with the new RPC design

Prototype results demonstrate effective impedance adjustment

Method supports high-resolution, efficient data recording

Abstract

While in a triggered experiment the matching of the RPC transmission line impedance with the one of the front-end electronics is less critical, for a trigger-less data recording this becomes mandatory. As expected, impedance matching is not straightforward when other requirements in terms of time and position resolutions, efficiency and granularity, have to be fulfilled in the same time. A method and the very first results obtained with a RPC prototype built based on it, presented in this paper, show that the impedance matching, independent of its granularity, can be achieved using an innovative architecture of the RPC.