Magnetic field effects on particle trajectories in the muon-spin relaxation experiment: Towards a high-field spectrometer

• Published in: Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Vol. 580; no. 3; pp. 1578 - 1587
• Main Authors: Lancaster, T., Shiroka, T., Scheuermann, R., Stoykov, A., Salman, Z., Cottrell, S.P., King, P.J.C., Lord, J.S., Pratt, F.L.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 11.10.2007
• Subjects: Charged-particle motion in field; High magnetic fields; Numerical simulation; 76.75.+i; 41.85.−p; Numerical simulation; High magnetic fields; 07.05.Tp; Charged-particle motion in field
• ISSN: 0168-9002; 1872-9576
• DOI: 10.1016/j.nima.2007.07.014

As a step towards the design of a muon-spin relaxation ( μ + SR ) spectrometer with a high magnetic field capability, we have carried out an investigation into the effects of applying a large magnetic field on the trajectories of particles in a μ + SR experiment. We compare the results of measurements and G eant4 simulations of the influence of applied fields on the incoming muon beam and the outgoing decay positron ensemble. Good agreement between measurements and simulations is found and the limits of this agreement are discussed.