_version_ 1866909973604204544
author Ammendola, R.
Apponi, A.
Benato, G.
Betti, M. G.
Biondim, R.
Bos, P.
Cavoto, G.
Cadeddu, M.
Casale, A.
Castellano, O.
Celasco, E.
Cecchini, L.
Chirico, M.
Chung, W.
Cocco, A. G.
Colijn, A. P.
Corcione, B.
D'Ambrosio, N.
D'Incecco, M.
De Bellis, G.
De Deo, M.
de Groot, N.
Esposito, A.
Farino, M.
Farinon, S.
Ferella, A. D.
Ferro, L.
Ficcadenti, L.
Muscio, G. Galbato
Gariazzo, S.
Garrone, H.
Gatti, F.
Korga, G.
Malnati, F.
Mangano, G.
Marcucci, L. E.
Mariani, C.
Mead, J.
Menichetti, G.
Messina, M.
Monticone, E.
Naafs, M.
Narcisi, V.
Nagorny, S.
Neri, G.
Pandolfi, F.
Pavarani, R.
Heros, C. Pèrez de los
Pisanti, O.
Pepe, C.
Pofi, F. M.
Polosa, A. D.
Rago, I.
Rossi, M. Rajteri N.
Ritarossi, S.
Ruocco, A.
Salina, G.
Santucci, A.
Sestu, M.
Tan, A.
Tozzini, V.
Tully, C. G.
van Rens, I.
Virzi, F.
Visser, G.
Vivian, M.
author_facet Ammendola, R.
Apponi, A.
Benato, G.
Betti, M. G.
Biondim, R.
Bos, P.
Cavoto, G.
Cadeddu, M.
Casale, A.
Castellano, O.
Celasco, E.
Cecchini, L.
Chirico, M.
Chung, W.
Cocco, A. G.
Colijn, A. P.
Corcione, B.
D'Ambrosio, N.
D'Incecco, M.
De Bellis, G.
De Deo, M.
de Groot, N.
Esposito, A.
Farino, M.
Farinon, S.
Ferella, A. D.
Ferro, L.
Ficcadenti, L.
Muscio, G. Galbato
Gariazzo, S.
Garrone, H.
Gatti, F.
Korga, G.
Malnati, F.
Mangano, G.
Marcucci, L. E.
Mariani, C.
Mead, J.
Menichetti, G.
Messina, M.
Monticone, E.
Naafs, M.
Narcisi, V.
Nagorny, S.
Neri, G.
Pandolfi, F.
Pavarani, R.
Heros, C. Pèrez de los
Pisanti, O.
Pepe, C.
Pofi, F. M.
Polosa, A. D.
Rago, I.
Rossi, M. Rajteri N.
Ritarossi, S.
Ruocco, A.
Salina, G.
Santucci, A.
Sestu, M.
Tan, A.
Tozzini, V.
Tully, C. G.
van Rens, I.
Virzi, F.
Visser, G.
Vivian, M.
contents The PTOLEMY project is prototyping a novel electromagnetic filter for high-precision $β$ 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 $β$-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 available precision on high voltage is, in the conservative case, as low as \SI{0.2}{ppm} per \SI{1}{kV} single board and $\lesssim$ \SI{50}{mV} over the \SI{10}{kV} series, presently limited by field mill read-out noise. However, assuming uncorrelated Gaussian noise extrapolation, the real precision could in principle be as low as \SI{0.05}{ppm} over \SI{20}{kV}.
format Preprint
id arxiv_https___arxiv_org_abs_2512_19437
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Ultra-high precision high voltage system for PTOLEMY
Ammendola, R.
Apponi, A.
Benato, G.
Betti, M. G.
Biondim, R.
Bos, P.
Cavoto, G.
Cadeddu, M.
Casale, A.
Castellano, O.
Celasco, E.
Cecchini, L.
Chirico, M.
Chung, W.
Cocco, A. G.
Colijn, A. P.
Corcione, B.
D'Ambrosio, N.
D'Incecco, M.
De Bellis, G.
De Deo, M.
de Groot, N.
Esposito, A.
Farino, M.
Farinon, S.
Ferella, A. D.
Ferro, L.
Ficcadenti, L.
Muscio, G. Galbato
Gariazzo, S.
Garrone, H.
Gatti, F.
Korga, G.
Malnati, F.
Mangano, G.
Marcucci, L. E.
Mariani, C.
Mead, J.
Menichetti, G.
Messina, M.
Monticone, E.
Naafs, M.
Narcisi, V.
Nagorny, S.
Neri, G.
Pandolfi, F.
Pavarani, R.
Heros, C. Pèrez de los
Pisanti, O.
Pepe, C.
Pofi, F. M.
Polosa, A. D.
Rago, I.
Rossi, M. Rajteri N.
Ritarossi, S.
Ruocco, A.
Salina, G.
Santucci, A.
Sestu, M.
Tan, A.
Tozzini, V.
Tully, C. G.
van Rens, I.
Virzi, F.
Visser, G.
Vivian, M.
Instrumentation and Detectors
Cosmology and Nongalactic Astrophysics
High Energy Physics - Experiment
The PTOLEMY project is prototyping a novel electromagnetic filter for high-precision $β$ 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 $β$-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 available precision on high voltage is, in the conservative case, as low as \SI{0.2}{ppm} per \SI{1}{kV} single board and $\lesssim$ \SI{50}{mV} over the \SI{10}{kV} series, presently limited by field mill read-out noise. However, assuming uncorrelated Gaussian noise extrapolation, the real precision could in principle be as low as \SI{0.05}{ppm} over \SI{20}{kV}.
title Ultra-high precision high voltage system for PTOLEMY
topic Instrumentation and Detectors
Cosmology and Nongalactic Astrophysics
High Energy Physics - Experiment
url https://arxiv.org/abs/2512.19437