Advanced muon-spin spectroscopy with high lateral resolution using Si-pixel detectors

Abstract

Muon-spin spectroscopy at continuous sources has stagnated at a stopped muons rate of ~40 kHz for the last few decades. The major limiting factor is the requirement of a single muon in the sample during the typical 10 μs data gate window. To overcome this limit and to be able to perform muon-spin relaxation (μSR) measurements on millimeter-sized samples, one can use vertex reconstruction methods to construct μSR spectra. This is now possible thanks to the availability of very thin monolithic Si-pixel chips, which offer minimal particle scattering and high count rate. Here we present results from a Si-pixel based spectrometer that utilizes vertex reconstruction schemes for the incoming muons and emitted positrons. With this spectrometer we were able to obtain a first vertex reconstructed μSR (VR-μSR) spectrum. The unique capabilities and benefits of such a spectrometer are discussed.

6 pages, 6 figures

References in corpus (9)

• Technical design of the phase I Mu3e experiment
• The new versatile general purpose surface-muon instrument (GPS) based on silicon photomultipliers for $\mu$SR measurements on a continuous-wave beam
• Corryvreckan: A Modular 4D Track Reconstruction and Analysis Software for Test Beam Data
• The MuPix System-on-Chip for the Mu3e Experiment
• Performance of the large scale HV-CMOS pixel sensor MuPix8
• MuPix7 - A fast monolithic HV-CMOS pixel chip for Mu3e
• The Mu3e Data Acquisition
• Efficiency and timing performance of the MuPix7 high-voltage monolithic active pixel sensor
• Data Flow in the Mu3e DAQ

Cited by in corpus (1)

• High-Resolution Timing for Vertex-Reconstructed Muon-Spin Spectroscopy Using Plastic Scintillators and MuTRiG