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Multiple scattering and particle identification in the Muon Ionisation Cooling Experiment.
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Pidcott, Celeste (2017) Multiple scattering and particle identification in the Muon Ionisation Cooling Experiment. PhD thesis, University of Warwick.
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WRAP_Theses_Pidcott_2017.pdf - Submitted Version - Requires a PDF viewer. Download (10Mb) | Preview |
Official URL: http://webcat.warwick.ac.uk/record=b3073327~S15
Abstract
The Muon Ionisation Cooling experiment aims to measure the effect of passing through low Z materials on the emittance of muons. This process is dependent on energy loss and multiple scattering through the material, which is currently not well understood for muons, and so it is necessary to study these effects. These studies require muon samples with high purity, greater than 99.9% upstream of the MICE cooling channel, for which strong particle identification is required.
A Global Particle Identification software framework has been developed, its performance assessed, and then applied to both Monte Carlo and MICE data. Monte Carlo studies have shown that the software can achieve the required purity. An analysis of multiple scattering of muons through Lithium Hydride has also been presented, using a method designed for the presence of magnetic fields in the cooling channel. This has been applied for Monte Carlo input in both the presence and absence of fields, and for data taken in the absence of fields, which is all of the scattering data taken thus far in MICE. The results of these studies have been compared with both the Wentzel-VI model of scattering implemented in Geant4 and with the PDG approximation for multiple scattering, which has shown that Wentzel-VI underestimates the widths of the scattering distributions, while the PDG approximation overestimates their widths, in particular the width of the distributions of the 3D space angle.
| Item Type: | Thesis (PhD) | ||||
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| Subjects: | Q Science > QC Physics | ||||
| Library of Congress Subject Headings (LCSH): | Multiple scattering (Physics), Muons, Beam emittance (Nuclear physics), Neutrinos | ||||
| Official Date: | July 2017 | ||||
| Dates: |
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| Institution: | University of Warwick | ||||
| Theses Department: | Department of Physics | ||||
| Thesis Type: | PhD | ||||
| Publication Status: | Unpublished | ||||
| Supervisor(s)/Advisor: | Boyd, Steve B. | ||||
| Format of File: | |||||
| Extent: | xxvii, 215 leaves : illustrations, charts | ||||
| Language: | eng |
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