First operation of an ACHINOS-equipped Spherical Proportional Counter with individual anode read-out

TL;DR

This paper reports the first experimental implementation of an ACHINOS-equipped spherical proportional counter with individual anode read-out, demonstrating improved energy resolution and calibration capabilities.

Contribution

It introduces the first measurements of an individually read out ACHINOS sensor, showing enhanced calibration and response homogenisation for spherical proportional counters.

Findings

Improved energy resolution with individual anode calibration

Successful demonstration of sensor calibration techniques

Simulation studies on sensor design and correction methods

Abstract

The multi-anode sensor ACHINOS revolutionised the capabilities of the spherical proportional counter by enabling large-size, high-pressure, operation and TPC-like reconstruction capabilities through individual anode read-out. First measurements with an individually read out ACHINOS are performed, which enables improved calibration and response homogenisation. Experimental results demonstrating the improvement in energy resolution brought by the individual anode calibration are presented. These are complemented by detailed simulation studies on the effect of sensor design and manufacturing imperfections, and how they may be corrected both in hardware and analysis.