Conveners
Session VI
- Joaquim Palacio Navarro (Laboratorio Subterráneo de Canfranc)
Segmented double-scatter Compton camera systems have been widely used for imaging gamma sources. There are examples of the same technique applied for neutron source imaging, however, such devices tend to be bulky and require considerable supporting infra-structure. We will present a compact design that utilizes a segmented scintillator stack, SiPMs, NeuPix ASICs, and an FPGA-based readout...
The injection of energetic electrons in dense gases and liquids is a technique widely used to accomplish several goals. In particular, how hot electrons thermalize in a dense gas or in a liquid is a subject that has attracted much attention. Hot electrons can lose their energy along multiple energy degradation paths. Dense rare gases efficiently convert the electron kinetic energy by exciting...
The Liquid Xenon Proportional Scintillation Counter (LXePSC) is a single-phase liquid xenon detector capable of producing electroluminescence directly in the liquid phase. In doing so, we are able to disregard the extraction efficiency, as seen in dual phase LXeTPCs, and simplify the detector design and operation by not needing to maintain a liquid-gas interface. In this talk, we will present...
Some recent noble-liquid electron-multiplier concepts have been recently proposed as potential sensing elements of single-phase detectors. They aim at overcoming current liquid-to-gas interface instabilities in large-area dual-phase TPCs.
We report the first observation of electroluminescence (EL) of liquid xenon with Micro-Strip plates (MSPs), similar to those used in gas Micro-Strip Plate...
Xenon in gaseous and liquid form is a widely used detector target material for rare-event searches, including the direct detection of dark matter. Its scintillation properties in the ultraviolet (UV) spectrum are well-known and extensively utilized. However, the use of infrared (IR) scintillation light in xenon-based detectors remains largely unexplored. This contribution presents the first...
Both the spectrum and primary scintillation yields of Argon-CF4 mixtures have been measured with an x-ray tube and an alpha source, respectively, in a broad range of concentrations and pressures. In the studied range of 220-800 nm, these mixtures scintillate mainly in four bands centered on 260, 290, 370 and 625 nm. Scintillation is clearly noticeable for as little as 0.1% of CF4 in the...
Xenon scintillation has been widely used in recent particle physics experiments. However, information on the primary scintillation yield in the absence of recombination is still scarce and dispersed. The mean energy required to produce a Vacuum Ultraviolet (VUV) scintillation photon (Wsc) in gaseous Xe has been measured in the 30–120 eV range. Lower Wsc-values are often reported for alpha...
Liquid xenon (LXe) is widely used in various neutrino and dark matter experiments, including the next-generation searches for dark matter and neutrinoless double beta decay, DARWIN and nEXO. LXe scintillates in vacuum ultraviolet (VUV) region, and understanding reflectance and transmittance of materials and photodetection efficiency (PDE) of photosensors in this region is important for...
