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6. Confronting the radiological screening challenges for next-generation rare-event detectors.

Author

Liu, Xin Ran

Subjects
FIDUCIAL markers (Imaging systems), NEUTRINOLESS double beta decay, RADIOCHEMICAL purification, DETECTORS
Abstract

Over the past few decades, the scale and mass of rare-event search experiments have increased by several orders of magnitude. To maintain background-free large fiducial-volume searches, the radiopurity requirements of the materials from which these devices are constructed have improved by similar factors. High-purity germanium spectroscopy has long-been the workhorse of material screening and selection, providing information on trace radioactive gamma-ray-emitting impurities in the bulk of materials. The next generation of direct dark matter and neutrinoless double beta decay experiments demand the development of additional assay techniques to provide a more complete understanding of the full uranium (U) and thorium (Th) decay chains, including knowledge of alpha-emitting surface depositions. In this proceeding I highlight the challenging radiopurity requirements for the next generation of rare-event search experiments, as well as the extensive UK-based material-assay infrastructure in place to address these demands. Where requirements exceed current capability, additional R&D is needed. I will summarise where this R&D is already underway across the UK. [ABSTRACT FROM AUTHOR]

Published
2023
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17. Public Engagement in a Global Pandemic.

Author

Corbett, Greg, Collier, Ian, Palmer, Sophy, Dack, Tom, and Liu, Xin Ran

Subjects
SCIENTIFIC computing, COVID-19 pandemic, COMPUTER software packaging, ONLINE education, TELECOMMUTING, COMPUTER programming
Abstract

UKRI/STFC's Scientific Computing Department (SCD) has a long and rich history of delivering face to face public engagement and outreach, both on site and in public places, as part of the wider STFC programme. Due to the global COVID-19 pandemic, SCD was forced to abandon an extensive planned programme of public engagement, alongside altering the day-to-day working methods of the majority of its staff. SCD had to respond rapidly to create a new, remote only, programme for the summer and for the foreseeable future. This was initially an exercise in improvisation, identifying existing activities that could be delivered remotely with minimal changes. As the pandemic went on, SCD also created new resources specifically for a remote audience and adapted existing activities where appropriate, using our evaluation framework to ensure these activities continued to meet the aims of the in-person programme. This paper presents the process through which this was achieved, some of the benefits and challenges of remote engagement and the plans for 2021 and beyond. [ABSTRACT FROM AUTHOR]

Published
2021
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