Measurement of the Normal Polarisation Variable, Py0, in a 2H(e, e'n) Experiment

Scott, Andrew M (2002) Measurement of the Normal Polarisation Variable, Py0, in a 2H(e, e'n) Experiment. PhD thesis, University of Glasgow.

Abstract

The High Acceptance Recoil Polarimeter (HARP) is a new polarimeter detector which is based on the recoil principle, using liquid hydrogen as an analyser. With the analysing power, Ay well known for n-p and p-p scattering, the asymmetry from the incoming nucleon flux and the normal polarisation variable, Py0 can be determined in a 2H(e,e'n) reaction. The 2H(e,e'n) experiment which was performed at NIKHEF, Amsterdam which utilised HARP as means to detect the polarisation of the neutron took place late in 1997. This thesis documents my involvement in the building and testing of this new detector system, my participation in the development of the data-acquisition software and in a commissioning experiment which took place at NIKHEF in November 1996 involving HARP. My work at ISN Grenoble on the analysis of the wire chamber information from the commissioning experiment is also documented. An overview of the HARP detector and its components are described and their performance under experimental conditions are documented. In addition, the experimental hall at NIKHEF, Emin, is also described. This thesis also describes the running of the 2H(e,e'n) experiment, the set-up at the experimental hall at NIKHEF and the problems encountered during this experiment involving the failure of the electron beam and the wire chambers of the HARP detector. A novel analysis method to extract as much information as possible in the absence of wire chamber data and with the reduced beam time of the experiment is presented where a value of 0.03 for Py0 is found.

• Item Type: Thesis (PhD)
• Qualification Level: Doctoral
• Additional Information: Adviser: David Ireland
• Keywords: High energy physics, Nuclear physics and radiation
• Date of Award: 2002
• Depositing User: Enlighten Team
• Unique ID: glathesis:2002-76216
• Copyright: Copyright of this thesis is held by the author.
• Date Deposited: 19 Nov 2019 16:27
• Last Modified: 19 Nov 2019 16:27
• URI: https://theses.gla.ac.uk/id/eprint/76216