A sparkless resistive glass correction electrode for the spherical proportional counter
arXiv:1809.03270 · doi:10.1088/1748-0221/13/11/P11006
Abstract
A new anode support structure for the spherical proportional counter is presented that incorporates a resistive correction electrode made of glass. This electrode improves the electric field homogeneity versus angle while suppressing the probability and intensity of sparks compared to non-resistive alternatives. The configuration of the correction electrode was optimised with simulations. Such support structures have been constructed and measurements have demonstrated homogeneous response of the detector and operational stability. A measurement of the resistivity of the glass used is also presented.
This work was performed within the NEWS-G collaboration and has received funding from the French National Research Agency (ANR-15-CE31-0008)