Karlsruhe 2024 – scientific programme

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T: Fachverband Teilchenphysik

T 87: Neutrino physics 11

T 87.3: Talk

Thursday, March 7, 2024, 16:30–16:45, Geb. 30.22: Gaede-HS

Characterization and deployment of LAPPDs for ANNIE — •Noah Goehlke, Amala Augusthy, David Maksimovic, Johann Martyn, Daniel Tobias Schmid, Michael Wurm, and Dorina Zundel for the ANNIE collaboration — JGU Mainz, Institute of Physics and EC PRISMA+

The Accelerator Neutrino Neutron Interaction Experiment (ANNIE) is a neutrino detector at the Booster Neutrino Beam at Fermilab. It is designed for a measurement of the neutron multiplicity in neutrino-nucleus interactions, improving the systematics of neutrino detectors. In addition, ANNIE has a strong focus on testing new detector technologies, in specific Water-based liquid scintillators (WbLS) and Large Area Picosecond Photodetectors (LAPPD). WbLS is a novel detector medium, combining the low energy threshold of a scintillator with the good directional resolution of a Cherenkov detector. LAPPDs are micro channel plate-based photon detectors with an active area of 20×20 cm². Their high spacial (< 1 cm²) and timing (< 60 ps) resolution promise a more precise reconstruction than conventional PMTs. In combination with WbLS, the high timing resolution can be used for a time separation of the Cherenkov and scintillation emission from WbLS. ANNIE aims to upgrade from three to five LAPPDs. In preparation, those LAPPDs have to be tested, characterized and assembled with their electronics in a waterproof housing. This talk presents ANNIE and the LAPPDs, as well as the recent progress towards the use of five LAPPDs. This work is supported by the DFG Project 490717455 and the DFG Graduate School GRK 2796: Particle Detectors.

Keywords: photon detector; scintillator; Cherenkov detector; neutrinos; detector technologies