Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

On the development of SuperSpec: a fully integrated on-chip spectrometer for far-infrared astronomy

Barry, Peter 2014. On the development of SuperSpec: a fully integrated on-chip spectrometer for far-infrared astronomy. PhD Thesis, Cardiff University.
Item availability restricted.

[img]
Preview
PDF - Accepted Post-Print Version
Available under License Creative Commons Attribution Non-commercial No Derivatives.

Download (13MB) | Preview
[img] PDF - Supplemental Material
Restricted to Repository staff only

Download (117kB)

Abstract

SuperSpec is an innovative, fully planar, compact spectrograph for mm/sub-mm astronomy. Its very small size, wide spectral bandwidth, and highly multiplexed detector readout will enable construction of powerful multi-object spectrometers for observations of galaxies at high redshift. SuperSpec is based on a superconducting filterbank consisting of a series of planar half-wavelength filters to divide up the incoming, broadband radiation. The power in each filter is coupled into a titanium nitride (TiN) lumped element Kinetic Inductance Detector (KID), facilitating the read out of a large number of filter elements with minimal cryogenic electronics. We present electromagnetic simulations of the various components that make up the first generation prototype device. We then present a characterisation of the performance of the TiN detectors and compare these to the standard Mattis-Bardeen prediction. We then demonstrate the operation of the filterbank at 250 GHz through a spectral characterisation made using a Martin-Puplett interferometer measuring a minimum filter bandwidth that corresponds to a spectral resolution of R = 700. From blackbody measurements of the most responsive filter channels, we estimate a system noise equivalent power of 2X10 to power -15 WHz to power -1/2.

Item Type: Thesis (PhD)
Status: Unpublished
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Uncontrolled Keywords: Kinetic inductance detectors, Resonators, Millimeter/Submillimeter Spectroscopy
Funders: STFC
Date of First Compliant Deposit: 30 March 2016
Last Modified: 04 Jun 2017 08:00
URI: http://orca-mwe.cf.ac.uk/id/eprint/71562

Actions (repository staff only)

Edit Item Edit Item

Downloads

Downloads per month over past year

View more statistics