Ultra-high precision high voltage system for PTOLEMY
R. Ammendola, A. Apponi, G. Benato, M.G. Betti, R. Biondim, P. Bos, G. Cavoto, M. Cadeddu, A. Casale, O. Castellano, E. Celasco, L. Cecchini, M. Chirico, W. Chung, A.G. Cocco, A.P. Colijn, B. Corcione, N. D'Ambrosio, M. D'Incecco, G. De Bellis, M. De Deo, N. de Groot

TL;DR
This paper demonstrates an ultra-high precision high voltage system using commercial references and field mill monitoring, achieving sub-ppm stability crucial for the PTOLEMY project's neutrino detection goals.
Contribution
It introduces a novel high voltage control system with unprecedented precision, combining commercial references and field mill technology for neutrino experiments.
Findings
Achieved voltage stability as low as 0.2 ppm per 1 kV board.
Potential for 0.05 ppm precision over 20 kV with noise extrapolation.
Demonstrated real-time monitoring capability for high voltage control.
Abstract
The PTOLEMY project is prototyping a novel electromagnetic filter for high-precision spectroscopy, with the ultimate and ambitious long-term goal of detecting the cosmic neutrino background through electron capture on tritium bound to graphene. Intermediate small-scale prototypes can achieve competitive sensitivity to the effective neutrino mass, even with reduced energy resolution. To reach an energy resolution better than \SI{500}{meV} at the tritium -spectrum endpoint of \SI{18.6}{keV}, and accounting for all uncertainties in the filtering chain, the electrode voltage must be controlled at the level of a few parts per million and monitored in real time. In this work, we present the first results obtained in this effort, using a chain of commercial ultra-high-precision voltage references, read out by precision multimeters and a \emph{field mill} device. The currently…
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Taxonomy
TopicsNeutrino Physics Research · Muon and positron interactions and applications · Particle Detector Development and Performance
