Speaker
Description
LoLX is a small scale R&D experiment, hosted at McGill University, which aims to study the properties of liquid xenon (LXe) scintillation light and characterize Cherenkov light emission in LXe with cutting-edge photo-detection technology. It supports next-generation rare-decay experiments, such as nEXO, which will search for neutrinoless double-beta decay in LXe. Interactions in nEXO produce scintillation light in the vacuum ultraviolet (VUV), and the photo-detection technology of choice are silicon photomultipliers (SiPMs), which have a high efficiency in this region, as well as exceptional gain.
The previous detector design included 96 Hamamatsu VUV4 SiPMs in a cylindrical geometry. Optical filters are used to separate Cherenkov and scintillation light produced by a radioactive beta source. In this talk we will present LoLX², the new cubic version of LoLX, which addresses a few issues encountered in its first iteration.
LoLX² will assess the performance of two types of SiPMs, Hamamatsu VUV4 and FBK HD3. It will deploy 40 of each type as well as a VUV-sensitive photomultiplier tube (PMT), which serves as a benchmark for SiPM photo-detection efficiency in VUV. We will give an overview of the new LoLX inner detector designed at TRIUMF, its assembly and the testing of the FBK HD3 SiPMs.
| Keyword-1 | LoLX |
|---|---|
| Keyword-2 | Silicon photomultipliers |
| Keyword-3 | neutrinoless double-beta decay |
