The 3.4 [Formula presented] discrepancy between the experimental value of the muon anomalous magnetic moment g-2 and the Standard Model prediction is one of the most intriguing indications of physics beyond the Standard Model. The MUonE project plans to measure the leading hadronic corrections to the muon g-2 by scattering high energy ([Formula presented]150 GeV) muons off the atomic electrons of a low-Z target through the elastic process [Formula presented]+e [Formula presented]+e. The angles of the incoming muons and the outcoming muons and electrons have to be measured precisely, to exploit the kinematical correlation of the [Formula presented]-e collision. To reach this goal a modular target is foreseen, consisting of 60 low-Z (Be or C) elements, 1 cm thick, each sandwiched in layers of Si-microstrip detectors, organized in XY, XU and VY planes ([Formula presented]45 ° to disentangle double tracks). In 2018, a feasibility test at the CERN North Area is foreseen, running parasitically on the beamline behind COMPASS. The setup consist of 16 layers with an area of 9.5[Formula presented]9.5 cm 2 , [Formula presented] thick, single side AGILE silicon detectors, which have a readout pitch of [Formula presented] and a floating strip scheme, resulting in a position resolution of the order of [Formula presented]. The DAQ rate is of the order of a few kHz. The contribution will describe the setup, the DAQ system and the first data collected during the commissioning phase in April/May.
A feasibility test run for the MUonE project
Mascagna, V.;Prest, M.;
2019-01-01
Abstract
The 3.4 [Formula presented] discrepancy between the experimental value of the muon anomalous magnetic moment g-2 and the Standard Model prediction is one of the most intriguing indications of physics beyond the Standard Model. The MUonE project plans to measure the leading hadronic corrections to the muon g-2 by scattering high energy ([Formula presented]150 GeV) muons off the atomic electrons of a low-Z target through the elastic process [Formula presented]+e [Formula presented]+e. The angles of the incoming muons and the outcoming muons and electrons have to be measured precisely, to exploit the kinematical correlation of the [Formula presented]-e collision. To reach this goal a modular target is foreseen, consisting of 60 low-Z (Be or C) elements, 1 cm thick, each sandwiched in layers of Si-microstrip detectors, organized in XY, XU and VY planes ([Formula presented]45 ° to disentangle double tracks). In 2018, a feasibility test at the CERN North Area is foreseen, running parasitically on the beamline behind COMPASS. The setup consist of 16 layers with an area of 9.5[Formula presented]9.5 cm 2 , [Formula presented] thick, single side AGILE silicon detectors, which have a readout pitch of [Formula presented] and a floating strip scheme, resulting in a position resolution of the order of [Formula presented]. The DAQ rate is of the order of a few kHz. The contribution will describe the setup, the DAQ system and the first data collected during the commissioning phase in April/May.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
