A sparkless resistive glass correction electrode for the spherical proportional counter

Understand

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.