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

Prototype finline-coupled TES bolometers for CLOVER

Audley, Michael D., Barker, Robert W., Crane, Michael, Dace, Roger, Glowacka, Dorota, Goldie, David J., Lasenby, Anthony N., Stevenson, Howard M., Tsaneva, Vassilka, Withington, Stafford, Grimes, Paul, Johnson, Bradley, Yassin, Ghassan, Piccirillo, Lucio, Pisano, Giampaolo, Duncan, William D., Hilton, Gene C., Irwin, Kent D., Reintsema, Carl D. and Halpern, Mark 2007. Prototype finline-coupled TES bolometers for CLOVER. Presented at: 17th International Symposium on Space Terahertz Technology, Paris, 10-12 May 2006. 17th International Symposium on Space Terahertz Technology 2006 ( Proceedings). Curran Associates, pp. 85-88.

Full text not available from this repository.

Abstract

CLOVER is an experiment which aims to detect the signature of gravitational waves from inflation by measuring the B-mode polarization of the cosmic microwave background. CLOVER consists of three telescopes operating at 97, 150, and 220 GHz. The 97-GHz telescope has 160 feedhorns in its focal plane while the 150 and 220-GHz telescopes have 256 horns each. The horns are arranged in a hexagonal array and feed a polarimeter which uses finline-coupled TES bolometers as detectors. To detect the two polarizations the 97-GHz telescope has 320 detectors while the 150 and 220-GHz telescopes have 512 detectors each. To achieve the target NEPs (1.5, 2.5, and 4.5x10^-17 W/rtHz) the detectors are cooled to 100 mK for the 97 and 150-GHz polarimeters and 230 mK for the 220-GHz polarimeter. Each detector is fabricated as a single chip to ensure a 100% operational focal plane. The detectors are contained in linear modules made of copper which form split-block waveguides. The detector modules contain 16 or 20 detectors each for compatibility with the hexagonal arrays of horns in the telescopes' focal planes. Each detector module contains a time-division SQUID multiplexer to read out the detectors. Further amplification of the multiplexed signals is provided by SQUID series arrays. The first prototype detectors for CLOVER operate with a bath temperature of 230 mK and are used to validate the detector design as well as the polarimeter technology. We describe the design of the CLOVER detectors, detector blocks, and readout, and present preliminary measurements of the prototype detectors performance.

Item Type: Conference or Workshop Item (Lecture)
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Uncontrolled Keywords: Submillimeter wave detectors, Finline transitions, Superconducting radiation detectors
Additional Information: Oral session n°2: Direct detection Information from the following - http://arxiv.org/abs/astro-ph/0608285 http://www.nrao.edu/meetings/isstt/tocfiles/2006toc.pdf
Publisher: Curran Associates
ISBN: 9781604239751
Related URLs:
Last Modified: 04 Jun 2017 06:57
URI: http://orca-mwe.cf.ac.uk/id/eprint/66392

Citation Data

Cited 3 times in Google Scholar. View in Google Scholar

Actions (repository staff only)

Edit Item Edit Item