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The Effect of Magnetic Fields on Vertex Reconstructed Muon-Spin Spectroscopy

Not scheduled
20m
Poster Presentation Beamlines and instruments Poster Session 1

Speaker

Pascal Isenring (Paul Scherrer Institute)

Description

The use of a Si pixel-based particle tracking scheme in μSR will, among others, allow measurements using a ten-fold increased stopped muons rate and samples ten times smaller than currently possible at continuous muon source facilities. In this contribution we present simulation results to assess the effects of magnetic fields on two spectrometer configurations using a two-layered tracking scheme for the incoming and outgoing particles (see Figure). At a low magnetic field of up to ~50 mT, the tracking and vertex reconstruction accuracy is only minimally influenced. For magnetic fields larger than 80 mT the tracking capabilities diminish significantly. Operating a two-layered scheme using small magnetic fields hence does not require adaptations. Only at large magnetic fields, a tracking scheme that makes use of an accurate field map or at least three tracking layers must be employed to achieve reliable particle tracking.

Depiction of the simulated μSR spectrometer configurations. (a) Linear arrangement. (b) Cuboid arrangement. The sample (red disk) sits between the upstream and downstream detector pairs. The gray disk serves as a non interacting (void) reference detector. Typical particle tracks are shown in an applied field of 0.75 T, with μ$^+$ in magenta, e$^+$ in blue, e$^-$ in red and neutrinos in green.

Email pascal.isenring@psi.ch
Funding Agency Swiss National Science Foundation, SNSF 215167
Supervisors Name Zaher Salman
Supervisors Email zaher.salman@psi.ch
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Primary author

Pascal Isenring (Paul Scherrer Institute)

Co-author

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