One of the main issues with increasing the size of two-phase Xe TPCs concerns their electrodes, which are exposed to additional sagging due to gravity and their mutual electrical attraction. The XeLab Project aims to overcome this challenge by developing an original concept of floating electrodes, where the canonical gate-anode system is replaced by a novel set of electrodes whose planarity is...
The next generation of xenon filled time projection chambers (TPCs) aiming at the direct detection of dark matter (DM), e.g Darwin [1], will be roughly a factor 10 larger than current experiments [2,3]. These TPCs should have as low backgrounds as possible and their high voltage (HV) electrodes should be stable and not induce discharges. It is crucial that the electrode surfaces are...
Dual-phase liquid/gas xenon TPCs, detecting the charge signal via proportional scintillation in gaseous xenon, are a well-established detector technology to search for WIMP dark matter. However, the spatially uniform generation of the charge signal will be challenging at the scale of the next-generation detectors due to the size of the TPCs. The generation of the charge signal in the liquid...
The next generation of liquid xenon (LXe) based dual-phase time projection chambers (TPCs) for dark-matter WIMP searches will supersede the current experiments of this type both in size and sensitivity. The central low-background TPC will not only be challenging because of its dimension of 2.6m in height and diameter, but also due to its low-temperature operation, and the required radio purity...
