Novel electron and photon recording concepts in noble-liquid detectors

Abstract

We present several novel ionization-electron and scintillation-photon recording concepts in noble-liquid detectors, for future applications in particle and astroparticle physics and in other fields. These involve both single- and dual-phase detector configurations with combined electroluminescence and small charge multiplication in gas and liquid media.

First observation of liquid xenon electroluminescence with a MicroStrip Plate

“…This value is similar to that measured in [19] (7%). Moreover, the optimization of the field configuration by using narrower anode strips and other MSP-electrode configurations is expected to result in superior performance, as discussed in section 4 and in [23].…”

“…Therefore, some authors have proposed different MSP geometries that could achieve better performance by increasing the voltage limit imposed by discharges. Here we consider two alternative designs proposed for single-phase noble-liquid detectors [23]: the Coated-Cathode Conductive Layer electrode (COCA-COLA) [32] and the Virtual Cathode Chamber (VCC) [33].…”

“…Overall, our results encourage further development of MSP-based single-phase detectors. Recently, some novel single-phase detector concepts for the detection of ionization electrons and VUVscintillation photons were proposed in [23]. A selection of them is depicted in figure 14.…”

“…Both single wires of 10 μm and multi-wire configurations have been considered [21]. A number of novel designs using micropattern structures have been proposed in [23].…”

“…Due to the wire fragility and mechanical instability under the high voltage required for efficient production of secondary photons (∼ 5 kV), it has been recently proposed [23] to use narrow metallic strips deposited on a dielectric support (e.g. quartz) instead of thin wires.…”