The MEG II experiment aims to improve the sensitivity to $\mu^+\rightarrow e^+\gamma$ down to $6\times10^{-14}$, surpassing the $4.2 \times 10^{-13}$ UL by MEG. To achieve this sensitivity the detector performances need to be assessed and monitored via dedicated calibrations. To calibrate the Liquid Xenon Calorimeter near the signal energy (52.8 MeV), photons are produced through the Charge EXchange (CEX) process $\pi^-p\rightarrow n\pi^0(\rightarrow\gamma\gamma$). Here we present the liquid Hydrogen target used for the CEX run 2021, during the first MEG II physics run.
A liquid hydrogen target to fully characterize the new MEG II liquid xenon calorimeter / Vitali, B.; Papa, A.; Baldini, A. M.; Benmansour, H.; Bianucci, S.; Cei, F.; Chiappini, M.; Chiarello, G.; Dal Maso, G.; Francesconi, M.; Galli, L.; Grassi, M.; Grigoriev, D. N.; Hildebrandt, M.; Meuwly, M.; Nicol`o, D.; C, ; Raffaelli, F.; Schwendimann, P.; Signorelli, G.; Venturini, A.. - In: NUCLEAR INSTRUMENTS AND METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT. - ISSN 1872-9576. - (2022). [10.1016/j.nima.2023.168020]
A liquid hydrogen target to fully characterize the new MEG II liquid xenon calorimeter
B. Vitali
;F. Raffaelli;
2022
Abstract
The MEG II experiment aims to improve the sensitivity to $\mu^+\rightarrow e^+\gamma$ down to $6\times10^{-14}$, surpassing the $4.2 \times 10^{-13}$ UL by MEG. To achieve this sensitivity the detector performances need to be assessed and monitored via dedicated calibrations. To calibrate the Liquid Xenon Calorimeter near the signal energy (52.8 MeV), photons are produced through the Charge EXchange (CEX) process $\pi^-p\rightarrow n\pi^0(\rightarrow\gamma\gamma$). Here we present the liquid Hydrogen target used for the CEX run 2021, during the first MEG II physics run.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
