Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X最新文献_第5页

ASTE BAND10 commissioning and science verification ASTE BAND10的调试和科学验证

Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X Pub Date : 2020-12-13 DOI: 10.1117/12.2561968

T. Kamazaki, S. Ishii, Andrea Silva, S. Asayama

引用次数: 0

Simulations of athermal phonon propagation in a cryogenic semiconducting bolometer 低温半导体热计中非热声子传播的模拟

Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X Pub Date : 2020-12-13 DOI: 10.1117/12.2561969

S. Stever, F. Couchot, B. Maffei

{"title":"Simulations of athermal phonon propagation in a cryogenic semiconducting bolometer","authors":"S. Stever, F. Couchot, B. Maffei","doi":"10.1117/12.2561969","DOIUrl":"https://doi.org/10.1117/12.2561969","url":null,"abstract":"We present three Monte Carlo models for the propagation of athermal phonons in the diamond absorber of a composite semiconducting bolometer `Bolo 184'. Previous measurements of the response of this bolometer to impacts by $alpha$ particles show a strong dependence on the location of particle incidence, and the shape of the response function is determined by the propagation and thermalisation of athermal phonons. The specific mechanisms of athermal phonon propagation at this time were undetermined, and hence we have developed three models for probing this behaviour by attempting to reproduce the statistical features seen in the experimental data. The first two models assume a phonon thermalisation length determined by a mean free path $lambda$, where the first model assumes that phonons thermalise at the borders of the disc (with a small $lambda$) and the second assumes that they reflect (with a $lambda$ larger than the size of the disc). The third model allows athermal photons to propagate along their geometrical line of sight (similar to ray optics), gradually losing energy. We find that both the reflective model and the geometrical model reproduce the features seen in experimental data, whilst the model assuming phonon thermalisation at the disc border produces unrealistic results. There is no significant dependence on directionality of energy absorption in the geometrical model, and in the schema of this thin crystalline diamond, a reflective absorber law and a geometrical law both produce consistent results.","PeriodicalId":393026,"journal":{"name":"Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124516215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Q-band receiver system design for the Canadian DVA-2 radio telescope 加拿大DVA-2射电望远镜q波段接收系统设计

Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X Pub Date : 2020-12-13 DOI: 10.1117/12.2562751

Sara Salem Hesari, D. Henke, V. Reshetov, F. Jiang, A. Seyfollahi, L. Knee, L. Baker, J. Bornemann, D. Chalmers

{"title":"Q-band receiver system design for the Canadian DVA-2 radio telescope","authors":"Sara Salem Hesari, D. Henke, V. Reshetov, F. Jiang, A. Seyfollahi, L. Knee, L. Baker, J. Bornemann, D. Chalmers","doi":"10.1117/12.2562751","DOIUrl":"https://doi.org/10.1117/12.2562751","url":null,"abstract":"A compact front-end system is presented for a dual-linear polarization cryogenic Q-band receiver. This receiver will be used to demonstrate the high frequency performance of the Dish Verification Antenna 2 (DVA-2) composite reflector telescope between 35–50 GHz and is a technology demonstrator with possible application to the National Radio Astronomy Observatory’s Next Generation Very Large Array (ngVLA). A vacuum vessel and a two-stage Gifford-McMahon cryopump system are used for the cryogenic environment. The second stage of the cryostat is cooled to 16 K and includes a small choke ring feed horn, a low-loss noise calibration module (NCM) integrated with orthogonal mode transducer (OMT), and two cryogenically cooled mHEMT MMIC low-noise amplifiers (LNAs). Using a noise diode as the noise source on the 300 K stage inside the cryostat helps to protect the cooled components from signals outside of the cryostat, and also lessen the heat on the second stage since a noise diode normally produce a power dissipation of several hundred mW. The OMT design is an optimized version of the design used in the ALMA Band 1 cartridge with two integrated directional couplers and excellent performance. The cascaded noise analysis of the receiver shows a receiver noise temperature of 19.4 K.","PeriodicalId":393026,"journal":{"name":"Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122565382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Comparing complex impedance and bias step measurements of Simons Observatory transition edge sensors 比较Simons天文台过渡边缘传感器的复杂阻抗和偏置阶跃测量

Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X Pub Date : 2020-12-13 DOI: 10.1117/12.2575912

N. Cothard, Aamir Ali, J. Austermann, Steve K. Choi, K. Crowley, B. Dober, C. Duell, S. Duff, P. Gallardo, G. Hilton, S. Ho, J. Hubmayr, M. Niemack, Rita F. Sonka, S. Staggs, E. Vavagiakis, Edward J. Wollack, Zhilei Xu

{"title":"Comparing complex impedance and bias step measurements of Simons Observatory transition edge sensors","authors":"N. Cothard, Aamir Ali, J. Austermann, Steve K. Choi, K. Crowley, B. Dober, C. Duell, S. Duff, P. Gallardo, G. Hilton, S. Ho, J. Hubmayr, M. Niemack, Rita F. Sonka, S. Staggs, E. Vavagiakis, Edward J. Wollack, Zhilei Xu","doi":"10.1117/12.2575912","DOIUrl":"https://doi.org/10.1117/12.2575912","url":null,"abstract":"The Simons Observatory (SO) will perform ground-based observations of the cosmic microwave background (CMB) with several small and large aperture telescopes, each outfitted with thousands to tens of thousands of superconducting aluminum manganese (AlMn) transition-edge sensor bolometers (TESs). In-situ characterization of TES responsivities and effective time constants will be required multiple times each observing-day for calibrating time-streams during CMB map-making. Effective time constants are typically estimated in the field by briefly applying small amplitude square-waves on top of the TES DC biases, and fitting exponential decays in the bolometer response. These so-called \"bias step\" measurements can be rapidly implemented across entire arrays and therefore are attractive because they take up little observing time. However, individual detector complex impedance measurements, while too slow to implement during observations, can provide a fuller picture of the TES model and a better understanding of its temporal response. Here, we present the results of dark TES characterization of many prototype SO bolometers and compare the effective thermal time constants measured via bias steps to those derived from complex impedance data.","PeriodicalId":393026,"journal":{"name":"Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126086516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

The Tenerife Microwave Spectrometer (TMS) experiment: studying the absolute spectrum of the sky emission in the 10-20GHz range 特内里费微波光谱仪(TMS)实验:研究10-20GHz波段天射绝对光谱

Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X Pub Date : 2020-12-13 DOI: 10.1117/12.2561309

Jose Alberto Rubino Martin, P. Arias, R. Hoyland, M. Aguiar-González, Javier De Miguel Hernandez, R. Génova-Santos, M. F. Gómez-Reñasco, F. Guidi, Patricia Fernández-Izquierdo, M. Fernández-Torreiro, Pablo A. Fuerte Rodriguez, C. Hernandez-Monteagudo, C. López-Caraballo, A. P. D. Taoro, M. Peel, R. Rebolo, Antonio Zamora-Jimenez, Eduardo D. González Carretero, C. Colodro-Conde, Cristina Pérez-Lemus, R. Toledo-Moreo, David Pérez-Lizán, F. Cuttaia, L. Terenzi, C. Franceschet, S. Realini, J. Chluba, Gaizka Murga-Llano, Ruben Sanquirce Garcia

引用次数: 3

µ-spec spectrometers for the EXCLAIM instrument µ-spec光谱仪用于EXCLAIM仪器

Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X Pub Date : 2020-12-13 DOI: 10.1117/12.2562446

Mona Mirzaei, E. Barrentine, B. Bulcha, G. Cataldo, J. Connors, N. Ehsan, T. Essinger-Hileman, L. Hess, S. Moseley, J. Mugge-Durum, O. Noroozian, S. Rodriguez, T. Stevenson, E. Switzer, C. Volpert, Edward J. Wollack

引用次数: 10

Optical design of the 1.85-m mm-submm telescope in 210–375 GHz band 210-375 GHz波段1.85 m mm-submm望远镜光学设计

Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X Pub Date : 2020-12-13 DOI: 10.1117/12.2561955

Y. Yamasaki, S. Masui, Masanari Okawa, Koki Yokoyama, Taisei Minami, Shota Ueda, Yutaka Hasegawa, A. Nishimura, T. Onishi, H. Ogawa, N. Okada, K. Kimura, Álvaro González, T. Kojima, K. Kaneko, R. Sakai

{"title":"Optical design of the 1.85-m mm-submm telescope in 210–375 GHz band","authors":"Y. Yamasaki, S. Masui, Masanari Okawa, Koki Yokoyama, Taisei Minami, Shota Ueda, Yutaka Hasegawa, A. Nishimura, T. Onishi, H. Ogawa, N. Okada, K. Kimura, Álvaro González, T. Kojima, K. Kaneko, R. Sakai","doi":"10.1117/12.2561955","DOIUrl":"https://doi.org/10.1117/12.2561955","url":null,"abstract":"Currently, we are performing a large-scale survey of molecular clouds toward the Galactic Plane in 12CO, 13CO, and C18O(J = 2–1) with the 1.85-m mm-submm telescope from Nobeyama Radio Observatory. In addition, we are proceeding with the preparation of a new project to observe several additional molecular lines including higher transitions of CO isotopes, such as 12CO, 13CO, and C18O(J = 2–1, 3–2) simultaneously with a wideband receiver (210–375 GHz). The optics has a Cassegrain reflector antenna with Nasmyth beam-waveguide feed and is composed of Main-reflector, Sub-reflector, ellipsoidal mirrors, and plane mirrors. New wideband optics will be required to achieve this goal. In order to accomplish the optics, we have designed a corrugated horn with a fractional bandwidth of ∼56 %, and frequency independent optics to couple the beam from the telescope onto the horn. The corrugated horn has a conical profile and the variable corrugation depth. It has been optimized by using CHAMP, our targeting return loss of better than −20 dB, cross-polarization loss of better than −25 dB, and far-field good radiation pattern. The simulation of the corrugated horn results in low return loss, low crosspolarization, and symmetric beam pattern in that frequency band. The simulated aperture efficiency of the designed receiver optics on the 1.85-m telescope is above 0.76 at all frequencies by using GRASP. Recently, we have succeeded in simultaneous observation of 12CO, 13CO, and C18O(J = 2–1 and 3–2) toward Orion KL with the optics for the first time.","PeriodicalId":393026,"journal":{"name":"Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130885274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Development of a wideband waveguide diplexer for simultaneous observation at 210-375 GHz 用于210-375 GHz同步观测的宽带波导双工器的研制

Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X Pub Date : 2020-12-13 DOI: 10.1117/12.2561355

S. Masui, Taisei Minami, Masanari Okawa, Y. Yamasaki, Koki Yokoyama, Shota Ueda, Yutaka Hasegawa, A. Nishimura, T. Onishi, H. Ogawa, T. Kojima, Álvaro González

引用次数: 3

Broadband quasi-optical system for on-chip filter-bank spectrometer operating at sub-mm wavelengths 片上滤波组光谱仪的亚毫米波段宽带准光学系统

Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X Pub Date : 2020-12-13 DOI: 10.1117/12.2562383

S. Dabironezare, K. Karatsu, S. Yates, A. P. Laguna, V. Murugesan, D. Thoen, A. Endo, J. Baselmans, N. Llombart

引用次数: 0

Multi-beam local oscillator for a 100-pixel heterodyne array receiver at THz 太赫兹波段100像素外差阵列接收机的多波束本振

Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X Pub Date : 2020-12-13 DOI: 10.1117/12.2560939

Y. Gan, B. Mirzaei, Jose R. G. Silva, A. Khalatpour, Q. Hu, C. Groppi, J. Siles, F. V. D. Tak, Jiansong Gao

{"title":"Multi-beam local oscillator for a 100-pixel heterodyne array receiver at THz","authors":"Y. Gan, B. Mirzaei, Jose R. G. Silva, A. Khalatpour, Q. Hu, C. Groppi, J. Siles, F. V. D. Tak, Jiansong Gao","doi":"10.1117/12.2560939","DOIUrl":"https://doi.org/10.1117/12.2560939","url":null,"abstract":"Generating multiple local oscillator beams is one challenge to develop large heterodyne receiver arrays (~100 pixels), which allow astronomical instrumentations mapping more area within limited space mission lifetime. Here, We combine a reflective Fourier grating with an unidirectional antenna coupled 3rd-order distributed feedback (DFB) quantum cascade laser (QCL) to generate 81 beams at 3.86 THz. We have measured the beam pattern of the diffracted 81 beams, which agrees well with a simulated result from COMSOL Multiphysics with respect to the angular distribution and power distribution among the 81 beams. The diffraction efficiency of the Fourier grating is derived to be 94±3%, which is very close to the simulated result of 97%. For an array of equal superconducting hot electron bolometer mixers, 64 out of 81 beams can pump the HEB mixers with similar power, resulting in receiver sensitivities within 10%. Such a combination of a Fourier grating and a QCL can create an LO with 100 beams or more, enabling a new generation of large heterodyne arrays for astronomical instrumentation. This paper is essentially a copy of our paper in Optics Express.","PeriodicalId":393026,"journal":{"name":"Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129310724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0