Kelly, Paul
(2014)
Analysis of Quasi-Optical Components
for Far-Infrared Astronomy.
Masters thesis, National University of Ireland Maynooth.
Abstract
This thesis is concerned with the development and analysis of quasi-optical
components used in experiments to measure of the CMB in the terahertz and
submillimetre wavebands. I have concentrated on corrugated horn structures in
the Planck and QUBIC experiments. A precise analysis of the electromagnetic and
optical performance of such instruments is required if they are to reach the
sensitivity goals required.
The analysis of these components was done through computer simulations
and experimentation. There were a number of techniques used to model the horns.
These techniques were implemented in NUI Maynooth's in-house simulation code
'Scatter' and a commercial software package known as CST. They were used to
predict the beam pattern of corrugated horns including the effects of likely
manufacturing errors. NUI Maynooth's Vector Network Analyser was used to
confirm the results obtained by the simulations.
The results in this thesis show that variations in corrugated horn made with
the efectroforming technique could result in significant degraded performance but
that small gaps between the metal sheets in platelet arrays are acceptable.
| Item Type: |
Thesis
(Masters)
|
| Keywords: |
Quasi-Optical Components; Far-Infrared Astronomy; |
| Academic Unit: |
Faculty of Science and Engineering > Experimental Physics |
| Item ID: |
5387 |
| Depositing User: |
IR eTheses
|
| Date Deposited: |
10 Sep 2014 08:58 |
| URI: |
|
| Use Licence: |
This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available
here |
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