Federica Bradascio DESY-Zeuthen

Study of the impact of magnetic field uncertainties on the physics parameters of the Mu2e experiment(pdf)

The Mu2e experiment will measure the coherent neutrinoless muon decay rate in the field of a nucleus with a single event sensitivity of 10^-17. Such an observation would be an unambiguous signal of New Physics. Superconducting solenoids play a central role in Mu2e. In particular, the Transport Solenoid (or TS) delivers the muon beam to the aluminum target and detector area, eliminates most of the beam induced backgrounds and selects the appropriate momentum range. For a solenoid, most important is the alignment. The coils experience mechanical and magnetic forces after cooling and powering, which can produce TS misalignments. This work examines how these misalignments could affect the design functions of TS and the physics of the experiment. Additionally, a possible test of TS alignment with low momentum electrons is examined, as an alternative option to measure its field with conventional probes, which is technically difficult due to mechanical interference.