Events in our system are self-managed.  Group and event managers are encouraged to review privacy and security settings, and adjust them if needed.  If you need assistance please contact Indico Support - contact Help at bottom of page.

Feb 15 – 18, 2022
America/Vancouver timezone
WNPPC2022 Booklet has been added. See also information about today's special guest: Dr. Eden Hennessey

Light-only Liquid Xenon (LoLX) Detector for Cherenkov and Scintillation Light Investigation

Feb 18, 2022, 10:36 AM


Nuclear and Particle Physics Instrumentation


Christopher Chambers (McGill University)


The Light-only Liquid Xenon (LoLX) experiment is designed to study the properties of light emission and transport in liquid xenon (LXe) using silicon photomultipliers (SiPMs). In addition, we also plan to perform long-term stability studies of the SiPMs in LXe. Another important goal of the LoLX experiment is to characterize and utilize the differences in the timing of Cherenkov and scintillation light production to develop a background discriminator for low-background LXe experiments such as, neutrino-less double beta decay searches. The first phase of LoLX is operational and consists of an octagonal 3D-printed structure housing 24 Hammamtsu VUV4 SiPM modules, for a total of 96 individual SiPM channels. The LoLX structure is placed in a cryostat that allows for the liquefaction of Xe along with a Sr-90 beta-emitter placed at the center of the LoLX detector volume. The beta decay electrons on interaction with LXe produce Cherenkov and scintillation light to be studied using LoLX. This talk will cover the current status of the LoLX experiment and present the results obtained from the first runs of the experiment. This data-taking campaign focused on validating the optical transport simulations of LoLX done in GEANT4 by the collaboration. In addition, the effect of external cross-talk (eXT) between the SiPMs was also explored. The DAQ system has been recently upgraded with a 5GSPS ADC, allowing for improved timing resolution of the light signals.

email address
Please select: Experiment or Theory Experiment

Primary author

Christopher Chambers (McGill University)


Thomas Brunner (McGill/TRIUMF) Fabrice Retiere (TRIUMF) Prof. Simon Viel (Carleton University) Mr Soud Al Kharusi (McGill University) Dr Austin de St. Croix (Queen's University) Prof. Marc-André Tétrault (Universite de Sherbrooke) Ms Bindiya Chana (Carleton University) Jessee Lefebvre (Universite de Sherbrooke) Dr Bernadette Rebeiro (McGill University) Mr David Gallacher (McGill University) Dr Liang Xie (TRIUMF)

Presentation materials