MUSCAT focal plane verification
MUSCAT focal plane verification
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马斯喀特焦平面验证
DOI:
10.1117/12.2576219
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
S. Doyle
中科院分区:
文献类型:
--
作者:
M. Tapia;P. Ade;P. Barry;T. Brien;E. Castillo;D. Ferrusca;V. G'omez;P. Hargrave;J. Rebollar;A. Hornsby;D. Hughes;J. M. J'auregui;P. Mauskopf;D. Murias;A. Papageorgiou;E. Pascale;A. P'erez;S. Rowe;M. Smith;C. Tucker;M. Vel'azquez;S. Ventura;S. Doyle
The Mexico-UK Submillimetre Camera for Astronomy (MUSCAT) is the second-generation large-format continuum camera operating in the 1.1 mm band to be installed on the 50-m diameter Large Millimeter Telescope (LMT) in Mexico. The focal plane of the instrument is made up of 1458 horn coupled lumped-element kinetic inductance detectors (LEKID) divided equally into six channels deposited on three silicon wafers. Here we present the preliminary results of the complete characterisation in the laboratory of the MUSCAT focal plane. Through the instrument's readout system, we perform frequency sweeps of the array to identify the resonance frequencies, and continuous timestream acquisitions to measure and characterise the intrinsic noise and 1/f knee of the detectors. Subsequently, with a re-imaging lens and a blackbody point source, the beams of every detector are mapped, obtaining a mean FWHM size of ~3.27 mm, close to the expected 3.1 mm. Then, by varying the intensity of a beam filling blackbody source, we measure the responsivity and noise power spectral density (PSD) for each detector under an optical load of 300 K, obtaining the noise equivalent power (NEP), with which we verify that the majority of the detectors are photon noise limited. Finally, using a Fourier Transform Spectrometer (FTS), we measure the spectral response of the instrument, which indicate a bandwidth of 1.0-1.2 mm centred on 1.1 mm, as expected.
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影响因子:
2
作者:
Castillo-Dominguez E
通讯作者:
Castillo-Dominguez E
DOI:
--
发表时间:
2018
期刊:
ArXiv e-prints
影响因子:
--
作者:
Brien T. L. R.
通讯作者:
Brien T. L. R.
DOI:
10.1117/12.2313697
发表时间:
2018
期刊:
--
影响因子:
--
作者:
Ventura González S
通讯作者:
Ventura González S
DOI:
10.1117/12.2561305
发表时间:
2020
期刊:
--
影响因子:
--
作者:
Brien T
通讯作者:
Brien T