Jun 18 – 23, 2023
University of New Brunswick
America/Halifax timezone
Welcome to the 2023 CAP Congress Program website! / Bienvenue au siteweb du programme du Congrès de l'ACP 2023!

New photosensor assembly in the Light only Liquid Xenon (LoLX) experiment: design and measurement prospects

Jun 19, 2023, 11:30 AM
15m
UNB Kinesiology (Rm. 215 (max.190))

UNB Kinesiology

Rm. 215 (max.190)

Oral (Non-Student) / Orale (non-étudiant(e)) Particle Physics / Physique des particules (PPD) (PPD/DNP) M1-1 Neutrinoless Double Beta Decay | Désintégration double bêta sans neutrino (PPD/DPN)

Speaker

Stephanie Bron (TRIUMF)

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

Primary author

Presentation materials