CAMELS - The Cambridge Emission Line Surveyor for the Greenland Telescope
CAMELS - 格陵兰望远镜的剑桥发射线测量员
基本信息
- 批准号:ST/L002221/1
- 负责人:
- 金额:$ 39.71万
- 依托单位:
- 依托单位国家:英国
- 项目类别:Research Grant
- 财政年份:2014
- 资助国家:英国
- 起止时间:2014 至 无数据
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
It is widely recognised that the development of a mature chip spectrometer technology, where each pixel in a focal-plane array is intrinsically capable of yielding detailed spectroscopic information, would revolutionise far-infrared and submm-wave(4 mm to 300 um) astronomy. Low spectral-resolution channels (R = 5-20) could be used for CMB and SZ astronomy, and for determining dust temperatures through simultaneous multicolour observations of continuum sources; medium spectral-resolution channels (R = 500-1000) could be used for wide-field blind surveys of high-redshift spectral-lines; and high spectral-resolution channels (R = 2000-4000) could be used for multiline mapping of molecular gas in star-forming regions and extended nearby galaxies. Once the core technology is available, a large number of pixels could be packed into arrays for mapping and surveys, or a small number of pixels could be positioned sparsely over a wide field of view to enable multi-object spectroscopy. Although a number of organisations are working on chip spectrometers, the international community is falling short of demonstrating science-grade observations. To some extent this situation has occurred because a significant amount time is needed on a submm-wave telescope to understand behaviour and refine designs. To address this situation, we propose to demonstrate a high-resolution (R = 3000) superconducting filter-bank spectrometer for the 70-115 GHz (4.3-2.6 mm) atmospheric window. The Cambridge Emission Line Surveyor (CAMELS) is a collaborative project between the Cavendish Laboratory and the Harvard Smithsonian Center for Astrophysics (CFA). CAMELS will be installed on the Greenland Telescope (GLT) and used to map isotopic abundances in low-z galaxies by measuring 12CO (vr = 115.271 GHz) and 13CO (vr =110.201 GHz) line strengths simultaneously. We will assess two slightly different designs: One will map bright lines from extended galaxies (z = 0.005 - 0.05) against high backgrounds (NEP = 2 x 10-17 WHz-1/2), and the other will detect faint lines from point sources (z = 0.05 - 0.12) against low backgrounds (NEP = 4 x 10-18 WHz-1/2). As well as being scientifically important, operation in the 70-115 GHz window will allow us to explore performance, without worrying about scheduling limitations imposed by the atmosphere.The elements of a chip spectrometer are easy to understand in principle, but the realisation of a complete instrument that is capable of making science-grade observations requires detailed knowledge. Our pixels will comprise a single-mode antenna, a bank of superconducting RF filters, coupling terminations to an array of Kinetic Inductance Detectors (KIDs), and a single superconducting readout line. All of these will be realised on a single wafer using multi-layer superconducting microcircuit technology. The chip will be read out using fast digital electronics and Software Defined Radio (SDR) techniques. The Cambridge Group runs a state of the art facility for manufacturing superconducting quantum sensors, and has considerable expertise in fabricating multi-layer microcircuits using bcc-Ta, beta-Ta, NbN, Nb, Al, Mo, Hf, Ir, Au, Cu, SiO, SiO2 films on Si substrates and SiN membranes. This facility will be used to realize the spectrometer modules.The outlook for the technology is considerable, and our programme contributes strongly to STFC's vision. All existing and planned ground-based and space-borne far-infrared observatories are completely reliant on superconducting imaging arrays and receivers. Superconducting device processing technology is now well established, and the next step is to produce microcircuits having complex on-chip functionality. For example, the ability to realise hyperspectral imaging where each pixel is capable of measuring the temperature of the continuum background and the strengths of certain widely space lines simultaneously would have a major impact on the design of future space telescopes.
人们普遍认为,一个成熟的芯片光谱仪技术的发展,其中焦平面阵列中的每个像素本质上能够产生详细的光谱信息,将彻底改变远红外和亚毫米波(4毫米至300微米)天文学。低光谱分辨率通道(R = 5-20)可用于CMB和SZ天文学,并通过连续光源的同时多色观测来确定尘埃温度;中等光谱分辨率通道(R = 500-1000)可用于高红移谱线的宽视场盲测;高光谱分辨率通道(R = 2000-4000)可用于恒星形成区和扩展的邻近星系的分子气体的多线测绘。一旦核心技术可用,大量的像素可以打包成阵列用于测绘和调查,或者少量的像素可以稀疏地放置在宽视场上,以实现多目标光谱学。尽管许多组织正在研究芯片光谱仪,但国际社会还没有展示出科学级的观测结果。在某种程度上,这种情况的发生是因为亚毫米波望远镜需要大量的时间来了解行为和改进设计。为了解决这种情况,我们建议演示一个高分辨率(R = 3000)超导滤波器组光谱仪的70-115 GHz(4.3-2.6 mm)的大气窗口。剑桥发射谱线测量仪(CAMELS)是卡文迪什实验室和哈佛史密森天体物理中心(CFA)之间的合作项目。CAMELS将安装在格陵兰望远镜(GLT)上,通过同时测量12 CO(vr = 115.271 GHz)和13 CO(vr =110.201 GHz)线强度,用于绘制低z星系的同位素丰度图。我们将评估两个略有不同的设计:一个将映射来自扩展星系(z = 0.005 - 0.05)的亮线与高背景(NEP = 2 x 10-17 WHz-1/2),另一个将检测来自点源(z = 0.05 - 0.12)的微弱线与低背景(NEP = 4 x 10-18 WHz-1/2)。在70-115 GHz频段工作,不仅具有重要的科学意义,还可以让我们探索性能,而不必担心大气层对时间安排的限制。芯片光谱仪的原理很容易理解,但要实现能够进行科学级观测的完整仪器,需要详细的知识。我们的像素将包括一个单模天线,一组超导RF滤波器,耦合终端的动态电感探测器(KID)阵列,和一个单一的超导读出线。所有这些都将在使用多层超导微电路技术的单个晶片上实现。芯片将使用快速数字电子和软件定义无线电(SDR)技术读出。剑桥集团拥有制造超导量子传感器的最先进设备,在使用bcc-Ta、beta-Ta、NbN、Nb、Al、Mo、Hf、Ir、Au、Cu、SiO、SiO2薄膜在Si衬底和SiN膜上制造多层微电路方面拥有相当丰富的专业知识。该设备将用于实现光谱仪模块。该技术的前景是可观的,我们的计划对STFC的愿景做出了强有力的贡献。所有现有的和计划中的地基和星载远红外观测站都完全依赖于超导成像阵列和接收器。超导器件加工技术现在已经很成熟,下一步是生产具有复杂片上功能的微电路。例如,实现高光谱成像的能力,其中每个像素能够同时测量连续背景的温度和某些广泛空间线的强度,这将对未来空间望远镜的设计产生重大影响。
项目成果
期刊论文数量(1)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Electrothermal model of kinetic inductance detectors
- DOI:10.1088/0953-2048/28/4/045012
- 发表时间:2014-11
- 期刊:
- 影响因子:3.6
- 作者:C. N. Thomas;S. Withington;D. Goldie
- 通讯作者:C. N. Thomas;S. Withington;D. Goldie
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Stafford Withington其他文献
Investigation of microwave propagation in high-temperature superconducting waveguides
高温超导波导中微波传播的研究
- DOI:
10.1109/7260.959313 - 发表时间:
2001 - 期刊:
- 影响因子:3
- 作者:
G. Yassin;Grzegorz Jung;V. Dikovsky;I. Barboy;Makoto Kambara;D. Cardwell;Stafford Withington - 通讯作者:
Stafford Withington
Modal Analysis of the Quasi-Optical Performance of Phase Gratings
- DOI:
10.1023/a:1021752502434 - 发表时间:
1999-08-01 - 期刊:
- 影响因子:2.500
- 作者:
J. Anthony Murphy;Créidhe O'Sullivan;Neil Trappe;William Lanigan;Ruth Colgan;Stafford Withington - 通讯作者:
Stafford Withington
Far-Infrared Optics Design & Verification
- DOI:
10.1023/a:1019679102893 - 发表时间:
2002-07-01 - 期刊:
- 影响因子:2.500
- 作者:
Créidhe O'Sullivan;Eli Atad-Ettedgui;William Duncan;David Henry;Willem Jellema;J. Anthony Murphy;Neil Trappe;Herman van de Stadt;Stafford Withington;Ghassan Yassin - 通讯作者:
Ghassan Yassin
Stafford Withington的其他文献
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{{ truncateString('Stafford Withington', 18)}}的其他基金
Quantum Sensors for the Hidden Sector
隐藏领域的量子传感器
- 批准号:
ST/T006625/2 - 财政年份:2022
- 资助金额:
$ 39.71万 - 项目类别:
Research Grant
Ultra-low-noise Superconducting Spectrometer Technology for Astrophysics
天体物理学超低噪声超导光谱仪技术
- 批准号:
ST/V000837/2 - 财政年份:2022
- 资助金额:
$ 39.71万 - 项目类别:
Research Grant
Determination of Absolute Neutrino Mass Using Quantum Technologies
使用量子技术测定中微子绝对质量
- 批准号:
ST/T006307/2 - 财政年份:2022
- 资助金额:
$ 39.71万 - 项目类别:
Research Grant
Determination of Absolute Neutrino Mass Using Quantum Technologies
使用量子技术测定中微子绝对质量
- 批准号:
ST/T006307/1 - 财政年份:2021
- 资助金额:
$ 39.71万 - 项目类别:
Research Grant
Quantum Sensors for the Hidden Sector
隐藏领域的量子传感器
- 批准号:
ST/T006625/1 - 财政年份:2021
- 资助金额:
$ 39.71万 - 项目类别:
Research Grant
Ultra-low-noise Superconducting Spectrometer Technology for Astrophysics
天体物理学超低噪声超导光谱仪技术
- 批准号:
ST/V000837/1 - 财政年份:2021
- 资助金额:
$ 39.71万 - 项目类别:
Research Grant
Photometric and Spectroscopic Superconducting Imaging Technology for Astrophysics
天体物理学光度和光谱超导成像技术
- 批准号:
ST/R00062X/1 - 财政年份:2018
- 资助金额:
$ 39.71万 - 项目类别:
Research Grant
Photometric and Spectroscopic Superconducting Imaging Technology for Astrophysics
天体物理学光度和光谱超导成像技术
- 批准号:
ST/M000818/1 - 财政年份:2015
- 资助金额:
$ 39.71万 - 项目类别:
Research Grant
Additional techncal support for Ultra-Low0Noise Photometric, Spectroscopic and Interferometric Imaging Technology for Astrophysics.
对天体物理学超低噪声光度、光谱和干涉成像技术的额外技术支持。
- 批准号:
ST/K001833/1 - 财政年份:2012
- 资助金额:
$ 39.71万 - 项目类别:
Research Grant
Ultra-Low-Noise Photometric, Spectroscopic and Interferometric Imaging Technology for Astrophysics
天体物理学超低噪声光度、光谱和干涉成像技术
- 批准号:
ST/J001554/1 - 财政年份:2012
- 资助金额:
$ 39.71万 - 项目类别:
Research Grant
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