A. Paiella , F. Cacciotti , G. Isopi , E. Barbavara , E.S. Battistelli , P. de Bernardis , V. Capalbo , A. Carbone , E. Carretti , D. Ciccalotti , F. Columbro , A. Coppolecchia , A. Cruciani , G. D’Alessandro , M. De Petris , F. Govoni , L. Lamagna , P. Marongiu , A. Mascia , S. Masi , G.P. Vargiu
{"title":"The kinetic inductance detectors for the MISTRAL instrument: Installation and characterization at the Sardinia Radio Telescope","authors":"A. Paiella , F. Cacciotti , G. Isopi , E. Barbavara , E.S. Battistelli , P. de Bernardis , V. Capalbo , A. Carbone , E. Carretti , D. Ciccalotti , F. Columbro , A. Coppolecchia , A. Cruciani , G. D’Alessandro , M. De Petris , F. Govoni , L. Lamagna , P. Marongiu , A. Mascia , S. Masi , G.P. Vargiu","doi":"10.1016/j.nima.2025.170373","DOIUrl":null,"url":null,"abstract":"<div><div>The MISTRAL instrument, a cryogenic W-band camera equipped with 415 lumped element kinetic inductance detectors, achieved a significant milestone in May 2023 with its successful installation at the Gregorian focus of the Sardinia Radio Telescope, a 64<!--> <!-->m aperture telescope in Italy. MISTRAL features a focal plane of approximately 94.4<!--> <!-->mm in diameter, providing an instantaneous field of view of about 4<!--> <!-->arcmin. To maintain the telescope’s angular resolution of <span><math><mrow><mo>∼</mo><mtext>12</mtext><mspace></mspace><mtext>arcsec</mtext></mrow></math></span>, the focal plane has been over-sampled with pixels separated by 4.2 mm, meaning a pixel separation of approximately 10.6<!--> <!-->arcsec. The lumped element kinetic inductance detectors in MISTRAL are made of a titanium–aluminum bilayer, <span><math><mrow><mn>10</mn><mo>+</mo><mtext>30</mtext><mspace></mspace><mtext>nm</mtext></mrow></math></span> thick, on a 100<!--> <!-->mm-diameter Silicon wafer, 235<!--> <!-->µm thick. The detectors are designed to have 415 resonances over a <span><math><mrow><mo>∼</mo><mtext>500</mtext><mspace></mspace><mtext>MHz</mtext></mrow></math></span> bandwidth, to work in a temperature range of 200 to 240<!--> <!-->mK, and to be sensitive in the W-band. In this contribution, we present the preliminary characterization of the MISTRAL detectors at the Sardinia Radio Telescope, comparing their performance to measurements conducted in the laboratory.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1075 ","pages":"Article 170373"},"PeriodicalIF":1.5000,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0168900225001743","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"INSTRUMENTS & INSTRUMENTATION","Score":null,"Total":0}
引用次数: 0
Abstract
The MISTRAL instrument, a cryogenic W-band camera equipped with 415 lumped element kinetic inductance detectors, achieved a significant milestone in May 2023 with its successful installation at the Gregorian focus of the Sardinia Radio Telescope, a 64 m aperture telescope in Italy. MISTRAL features a focal plane of approximately 94.4 mm in diameter, providing an instantaneous field of view of about 4 arcmin. To maintain the telescope’s angular resolution of , the focal plane has been over-sampled with pixels separated by 4.2 mm, meaning a pixel separation of approximately 10.6 arcsec. The lumped element kinetic inductance detectors in MISTRAL are made of a titanium–aluminum bilayer, thick, on a 100 mm-diameter Silicon wafer, 235 µm thick. The detectors are designed to have 415 resonances over a bandwidth, to work in a temperature range of 200 to 240 mK, and to be sensitive in the W-band. In this contribution, we present the preliminary characterization of the MISTRAL detectors at the Sardinia Radio Telescope, comparing their performance to measurements conducted in the laboratory.
期刊介绍:
Section A of Nuclear Instruments and Methods in Physics Research publishes papers on design, manufacturing and performance of scientific instruments with an emphasis on large scale facilities. This includes the development of particle accelerators, ion sources, beam transport systems and target arrangements as well as the use of secondary phenomena such as synchrotron radiation and free electron lasers. It also includes all types of instrumentation for the detection and spectrometry of radiations from high energy processes and nuclear decays, as well as instrumentation for experiments at nuclear reactors. Specialized electronics for nuclear and other types of spectrometry as well as computerization of measurements and control systems in this area also find their place in the A section.
Theoretical as well as experimental papers are accepted.