Speaker
Description
The Accelerator Neutrino Neutron Interaction Experiment (ANNIE) is a gadolinium-doped water Cherenkov detector located on Fermilab’s Booster Neutrino Beam (BNB). It aims to measure final state neutron multiplicity in neutrino-nucleus interactions, an important parameter for improving neutrino interaction models. Furthermore, ANNIE serves as a test bed for new detector technologies, predominantly Large Area Picosecond Photodetectors (LAPPDs) and water-based liquid scintillator (WbLS). LAPPDs have benefits over conventional photomultiplier tubes (PMTs) including superior time resolution and imaging capabilities - the ability to resolve photon hit positions on the photocathode. These features have the potential to significantly enhance the reconstruction of neutrino interaction position and energy, even with only a small number of LAPPDs. Their fast timing also enables the separation of scintillation and Cherenkov light from the WbLS. ANNIE is the first high energy physics experiment to deploy a multi-LAPPD system. Here, we present an overview of the characterisation, deployment, and integration of the LAPPDs with the wider detector, with a particular focus on unique challenges posed by this novel technology, lessons learned and highlights from early data. This includes the detection of beam neutrinos by multiple LAPPDs.
| Primary experiment | ANNIE |
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