A multiball read-out for the spherical proportional counter
A. Giganon, I. Giomataris, M. Gros, I. Katsioulas, X. F. Navick, G., Tsiledakis, I. Savvidis, A. Dastgheibi-Fard, A. Brossard

TL;DR
This paper introduces a multi-ball read-out system for spherical proportional counters, enabling improved electric field tuning and segmentation, thus enhancing large-volume detector capabilities with potential 3D imaging.
Contribution
The paper proposes a novel multi-ball read-out design that overcomes limitations of traditional single-ball systems in large, high-pressure spherical detectors.
Findings
Enables electric field tuning in large spherical detectors
Allows detector segmentation with individual ball read-out
Transforms the detector into a spherical time projection chamber
Abstract
We present a novel concept of proportional gas amplification for the read-out of the spherical proportional counter. The standard single-ball read-out presents limitations for large diameter spherical detectors and high pressure operations. We have developed a multi-ball read-out system which consists of several balls sitting at a fixed distance from the center of the spherical vessel. Such a module can tune the volume electric field at the desired value and can also provide detector segmentation with individual ball read-out. In the latter case the large volume of the vessel becomes a spherical time projection chamber with 3D capabilities.
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