Projects per year
Abstract
We present the results of characterization measurements on a 1280 pixel superconducting bolometer array designed for operation at wavelengths around 450 pm. The array is a prototype for the sub-arrays which will form the focal plane for the SCUBA-2 sub-mm camera, being built for the James Clerk Maxwell Telescope (JCMT) in Hawaii. With over 10 000 pixels in total, it will provide a huge improvement in both sensitivity and mapping speed over existing instruments. The array consists of molybdenum-copper bi-layer TES (transition edge sensor) pixels, bonded to a multiplexer. The detectors operate at a temperature of approximately 175 mK, and require a heat sink at a temperature of approximately 60 mK. In contrast to previous TES arrays, the multiplexing elements are located beneath each pixel (an "in-focal plane" configuration). We present the results of electrical and optical measurements, and show that the optical NEP (noise equivalent power) is less than 1.4 x 10(-16) W Hz(-0.5), and thus within the requirement of 2.9 x 10(-16) W Hz(-0.5).
Original language | English |
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Title of host publication | Millimeter and Submillimeter Detectors and Instrumentation for Astronomy III |
Editors | J Zmuidzinas, WS Holland, S Withington, WD Duncan |
Place of Publication | BELLINGHAM |
Publisher | SPIE |
Pages | F2751-F2751 |
Number of pages | 11 |
ISBN (Print) | 0-8194-6340-X |
DOIs | |
Publication status | Published - 2006 |
Event | Conference on Millimeter and Submillimeter Detectors and Instrumentation for Astronomy III - Orlando Duration: 29 May 2006 → 31 May 2006 |
Conference
Conference | Conference on Millimeter and Submillimeter Detectors and Instrumentation for Astronomy III |
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City | Orlando |
Period | 29/05/06 → 31/05/06 |
Keywords
- TES
- superconducting detectors
- submillimetre astronomy
- large format
- imaging
- array
- SCUBA-2
- detectors
- characterization
- JCMT
- ASTRONOMY
- MULTIPLEXER
- DESIGN
- CAMERA