Ultra-high precision high voltage system for PTOLEMY
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| Format: | Preprint |
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2025
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| 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 |