The new drift chamber of the MEG II experiment

Chiappini, M.; Baldini, A. M.; Cavoto, G.; Cei, F.; Chiarello, G.; Francesconi, M.; Galli, L.; Grancagnolo, F.; Grassi, M.; Hildebrandt, M.; Nicolò, D.; Panareo, M.; Papa, A.; Raffaelli, F.; Renga, F.; Signorelli, G.; Tassielli, G. F.; Voena, C.

doi:10.1016/j.nima.2018.10.182

This article presents the MEG II Cylindrical Drift CHamber (CDCH), a key detector for the phase 2 of MEG, which aims at reaching a sensitivity level of the order 6x10^-14 of for the charged Lepton Flavour Violating mu+-->e+ gamma decay (Calibbi and Signorelli, 2018; Cei and Nicolò, 2014). CDCH is designed to overcome the limitations of the MEG tracker (Baldini et al., 2013) and guarantee the proper operation at high rates with long-term detector stability. CDCH is a low-mass unique volume detector with high granularity: 9 layers of 192 drift cells, few mm wide, defined by wires in a stereo configuration for longitudinal hit localization. The total radiation length is 1.5x10^-3 X0, thus minimizing the Multiple Coulomb Scattering (MCS) contribution and allowing for a single-hit resolution of 110 micometers (Baldini et al., 2016) and a momentum resolution of 130 keV/c. CDCH integration into the MEG II experimental apparatus (Baldini et al., 2018) will start in this year.

Titolo:	The new drift chamber of the MEG II experiment
Autori:	Chiappini, M. Baldini, A. M. Cavoto, G. Cei, F. CHIARELLO, GIANLUIGI [Membro del Collaboration Group] Francesconi, M. Galli, L. GRANCAGNOLO, FRANCESCO [Membro del Collaboration Group] Grassi, M. Hildebrandt, M. Nicolò, D. PANAREO, Marco [Membro del Collaboration Group] Papa, A. Raffaelli, F. Renga, F. Signorelli, G. TASSIELLI, GIOVANNI FRANCESCO [Membro del Collaboration Group] Voena, C. mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2019
Abstract:	This article presents the MEG II Cylindrical Drift CHamber (CDCH), a key detector for the phase 2 of MEG, which aims at reaching a sensitivity level of the order 6x10^-14 of for the charged Lepton Flavour Violating mu+-->e+ gamma decay (Calibbi and Signorelli, 2018; Cei and Nicolò, 2014). CDCH is designed to overcome the limitations of the MEG tracker (Baldini et al., 2013) and guarantee the proper operation at high rates with long-term detector stability. CDCH is a low-mass unique volume detector with high granularity: 9 layers of 192 drift cells, few mm wide, defined by wires in a stereo configuration for longitudinal hit localization. The total radiation length is 1.5x10^-3 X0, thus minimizing the Multiple Coulomb Scattering (MCS) contribution and allowing for a single-hit resolution of 110 micometers (Baldini et al., 2016) and a momentum resolution of 130 keV/c. CDCH integration into the MEG II experimental apparatus (Baldini et al., 2018) will start in this year.
Handle:	http://hdl.handle.net/11587/431456
Appare nelle tipologie:	Relazione di atto di convegno in volume

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