CRES is a technique for precision measurements of kinetic energies of charged
particles, pioneered by the Project 8 experiment to measure the neutrino mass
using the tritium endpoint method. It was recently employed for the first time
to measure the molecular tritium spectrum and place a limit on the neutrino
mass using a cm$^3$-scale detector. Future direct neutrino mass experiments are
developing the technique to overcome the systematic and statistical limitations
of current detectors. This paper describes one such approach, namely the use of
antenna arrays for CRES in free space. Phenomenology, detector design,
simulation, and performance estimates are discussed, culminating with an
example design with a projected sensitivity of $m_{\beta} < 0.04 \ \mathrm{eV}/c^2$. Prototype antenna array measurements are also shown for a demonstrator-scale setup as a benchmark for the simulation. By consolidating these results, this paper serves as a comprehensive reference for the development and performance of antenna arrays for CRES.

Questo articolo esplora i giri e le loro implicazioni.

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