Journal of Low Temperature Physics最新文献

筛选
英文 中文
Signatures of Thermal and Electrical Crosstalk in a Microwave Multiplexed Hard X-ray Transition Edge Sensor Array 微波多路硬 X 射线过渡边缘传感器阵列中的热串扰和电串扰特征
IF 2 3区 物理与天体物理
Journal of Low Temperature Physics Pub Date : 2024-05-09 DOI: 10.1007/s10909-024-03109-x
Panthita Triamkitsawat, Tejas Guruswamy, Orlando Quaranta, Lisa Gades, Umeshkumar Patel, Antonino Miceli
{"title":"Signatures of Thermal and Electrical Crosstalk in a Microwave Multiplexed Hard X-ray Transition Edge Sensor Array","authors":"Panthita Triamkitsawat, Tejas Guruswamy, Orlando Quaranta, Lisa Gades, Umeshkumar Patel, Antonino Miceli","doi":"10.1007/s10909-024-03109-x","DOIUrl":"https://doi.org/10.1007/s10909-024-03109-x","url":null,"abstract":"<p>We investigate the crosstalk between Transition-Edge Sensor (TES) pixels in a 24-pixel hard X-ray spectrometer array fabricated at the Advanced Photon Source, Argonne National Laboratory. Analysis shows thermal cross talk, possibly associated with insufficient thermalization, and rare but larger in magnitude electrical crosstalk between specific perpetrator-victim pixel combinations, potentially due to defects in the bias wiring or microwave multiplexing circuit. We use a method based on group-triggering and averaging to isolate the crosstalk response despite only having access to X-ray photon illumination uniform across the entire array. This allows us to identify thermal and electrical crosstalk between pixel pairs in repeated measurements to the level of 1 part in 1000 or better. In the array under study, the magnitude of observed crosstalk is small but comparable to the resolving power of this pixel design (<span>(E/Delta {}E sim)</span> 1000 at 20 keV) and so potentially responsible for a degradation in energy resolution of the array at high incident photon rates. Having proven the methods to identify and quantify crosstalk in our setup, we can now consider mitigations.</p>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140926101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of the Half-Scaled Reflector of the LiteBIRD Low-Frequency Telescope 开发 LiteBIRD 低频望远镜的半比例反射镜
IF 2 3区 物理与天体物理
Journal of Low Temperature Physics Pub Date : 2024-05-09 DOI: 10.1007/s10909-024-03113-1
Shugo Oguri, Toru Kaga, Frederick Matsuda, Kazufusa Noda, Yasutaka Satou, Yutaro Sekimoto, Yuichi Togashi
{"title":"Development of the Half-Scaled Reflector of the LiteBIRD Low-Frequency Telescope","authors":"Shugo Oguri, Toru Kaga, Frederick Matsuda, Kazufusa Noda, Yasutaka Satou, Yutaro Sekimoto, Yuichi Togashi","doi":"10.1007/s10909-024-03113-1","DOIUrl":"https://doi.org/10.1007/s10909-024-03113-1","url":null,"abstract":"<p>LiteBIRD is a space mission aimed to measure the polarization signal of the cosmic microwave background (CMB). One of the telescopes of LiteBIRD is the low-frequency telescope which has two aluminum reflectors. The reflectors are designed with thin surfaces to minimize the weight of the reflectors. Due to the thinness of the surfaces, there is a potential risk of deformation due to machining and thermal stresses. We need to establish the fabrication methodology to achieve the required surface accuracy and maintain it throughout the operation period. This paper describes the fabrication and prototyping of the half-scaled reflector and the evaluation of the surface accuracy as a demonstration. We confirmed that we can achieve an accuracy of the reflector surface of less than 10 <span>(upmu)</span>m RMS. Additionally, the deformation after the thermal cycle test was less than 2 <span>(upmu)</span>m RMS. These meet our requirements for CMB observation.</p>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140926099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dispersion Law for a One-Dimensional Weakly Interacting Bose Gas with Zero Boundary Conditions 具有零边界条件的一维弱相互作用玻色气体的弥散定律
IF 2 3区 物理与天体物理
Journal of Low Temperature Physics Pub Date : 2024-05-08 DOI: 10.1007/s10909-024-03136-8
Maksim Tomchenko
{"title":"Dispersion Law for a One-Dimensional Weakly Interacting Bose Gas with Zero Boundary Conditions","authors":"Maksim Tomchenko","doi":"10.1007/s10909-024-03136-8","DOIUrl":"https://doi.org/10.1007/s10909-024-03136-8","url":null,"abstract":"<p>From the time-dependent Gross equation, we find the quasiparticle dispersion law for a one-dimensional weakly interacting Bose gas with a non-point interatomic potential and zero boundary conditions (BCs). The result coincides with the dispersion law for periodic BCs, i.e., the Bogoliubov law <span>(E_{B}(k) = sqrt{left( frac{hbar ^{2} k^2}{2,m}right) ^{2} + n_{0}nu (k)frac{hbar ^2 k^2}{m}})</span>. In the case of periodic BCs, the dispersion law can be easily derived from Gross’ equation. However, for zero BCs, the analysis is not so simple.</p>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140926094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Design Method of an Ultra-Wideband and Easy-to-Array Magic-T: A 6-14 GHz Scaled Model for a mm/submm Camera 超宽带、易阵列 Magic-T 的设计方法:用于毫米/亚毫米相机的 6-14 GHz 比例模型
IF 2 3区 物理与天体物理
Journal of Low Temperature Physics Pub Date : 2024-05-07 DOI: 10.1007/s10909-024-03150-w
Shuhei Inoue, Kah Wuy Chin, Shinsuke Uno, Kotaro Kohno, Yuka Niwa, Toyo Naganuma, Ryosuke Yamamura, Kazuki Watanabe, T. Takekoshi, Tai Oshima
{"title":"A Design Method of an Ultra-Wideband and Easy-to-Array Magic-T: A 6-14 GHz Scaled Model for a mm/submm Camera","authors":"Shuhei Inoue, Kah Wuy Chin, Shinsuke Uno, Kotaro Kohno, Yuka Niwa, Toyo Naganuma, Ryosuke Yamamura, Kazuki Watanabe, T. Takekoshi, Tai Oshima","doi":"10.1007/s10909-024-03150-w","DOIUrl":"https://doi.org/10.1007/s10909-024-03150-w","url":null,"abstract":"","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141129357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Directional Filter Design and Simulation for Superconducting On-Chip Filter-Banks 超导片上滤波器组的定向滤波器设计与仿真
IF 2 3区 物理与天体物理
Journal of Low Temperature Physics Pub Date : 2024-05-04 DOI: 10.1007/s10909-024-03118-w
Louis H. Marting, Kenichi Karatsu, Akira Endo, Jochem J. A. Baselmans, Alejandro Pascual Laguna
{"title":"Directional Filter Design and Simulation for Superconducting On-Chip Filter-Banks","authors":"Louis H. Marting, Kenichi Karatsu, Akira Endo, Jochem J. A. Baselmans, Alejandro Pascual Laguna","doi":"10.1007/s10909-024-03118-w","DOIUrl":"https://doi.org/10.1007/s10909-024-03118-w","url":null,"abstract":"<p>Many superconducting on-chip filter-banks suffer from poor coupling to the detectors behind each filter. This is a problem intrinsic to the commonly used half-wavelength filter, which has a maximum theoretical coupling of 50 %. In this paper, we introduce a phase-coherent filter, called a directional filter, which has a theoretical coupling of 100 %. In order to study and compare different types of filter-banks, we first analyze the measured filter frequency scatter, losses, and spectral resolution of a DESHIMA 2.0 filter-bank chip. Based on measured fabrication tolerances and losses, we adapt the input parameters for our circuit simulations, quantitatively reproducing the measurements. We find that the frequency scatter is caused by nanometer-scale line width variations and that variances in the spectral resolution is caused by losses in the dielectric only. Finally, we include these realistic parameters in a full filter-bank model and simulate a wide range of spectral resolutions and oversampling values. For all cases, the directional filter-bank has significantly higher coupling to the detectors than the half-wave resonator filter-bank. The directional filter eliminates the need to use oversampling as a method to improve the total efficiency, instead capturing nearly all the power remaining after dielectric losses.</p>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140887362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Simons Observatory: Production-Level Fabrication of the Mid- and Ultra-High-Frequency Wafers 西蒙斯天文台:中频和超高频晶圆的生产级制造
IF 2 3区 物理与天体物理
Journal of Low Temperature Physics Pub Date : 2024-05-04 DOI: 10.1007/s10909-024-03117-x
Shannon M. Duff, Jason Austermann, James A. Beall, David P. Daniel, Johannes Hubmayr, Greg C. Jaehnig, Bradley R. Johnson, Dante Jones, Michael J. Link, Tammy J. Lucas, Rita F. Sonka, Suzanne T. Staggs, Joel Ullom, Yuhan Wang
{"title":"The Simons Observatory: Production-Level Fabrication of the Mid- and Ultra-High-Frequency Wafers","authors":"Shannon M. Duff, Jason Austermann, James A. Beall, David P. Daniel, Johannes Hubmayr, Greg C. Jaehnig, Bradley R. Johnson, Dante Jones, Michael J. Link, Tammy J. Lucas, Rita F. Sonka, Suzanne T. Staggs, Joel Ullom, Yuhan Wang","doi":"10.1007/s10909-024-03117-x","DOIUrl":"https://doi.org/10.1007/s10909-024-03117-x","url":null,"abstract":"<p>The Simons Observatory (SO) is a cosmic microwave background instrumentation suite in the Atacama Desert of Chile. More than 65,000 polarization-sensitive transition-edge sensor (TES) bolometers will be fielded in the frequency range spanning 27 to 280 GHz, with three separate dichroic designs. The mid-frequency 90/150 GHz and ultra-high-frequency 220/280 GHz detector arrays, fabricated at NIST, account for 39 of 49 total detector modules and implement the feedhorn-fed orthomode transducer-coupled TES bolometer architecture. A robust production-level fabrication framework for these detector arrays and the monolithic DC/RF routing wafers has been developed, which includes single device prototyping, process monitoring techniques, in-process metrology, and cryogenic measurements of critical film properties. Application of this framework has resulted in timely delivery of nearly 100 total superconducting focal plane components to SO with <span>(88%)</span> of detector wafers meeting nominal criteria for integration into a detector module: a channel yield <span>(&gt;95%)</span> and <span>(T_{textrm{c}})</span> in the targeted range.</p>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140887365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Crosstalk Effects in Microwave SQUID Multiplexed TES Bolometer Readout 微波 SQUID 多路复用 TES 波长计读数中的串扰效应
IF 2 3区 物理与天体物理
Journal of Low Temperature Physics Pub Date : 2024-05-04 DOI: 10.1007/s10909-024-03126-w
John C. Groh, Zeeshan Ahmed, Shawn W. Henderson, Johannes Hubmayr, John A. B. Mates, Maximiliano Silva-Feaver, Joel Ullom, Cyndia Yu
{"title":"Crosstalk Effects in Microwave SQUID Multiplexed TES Bolometer Readout","authors":"John C. Groh, Zeeshan Ahmed, Shawn W. Henderson, Johannes Hubmayr, John A. B. Mates, Maximiliano Silva-Feaver, Joel Ullom, Cyndia Yu","doi":"10.1007/s10909-024-03126-w","DOIUrl":"https://doi.org/10.1007/s10909-024-03126-w","url":null,"abstract":"<p>Transition-edge sensor (TES) bolometers are broadly used for background-limited astrophysical measurements from the far-infrared to mm-waves. Many planned future instruments require increasingly large detector arrays, but their scalability is limited by their cryogenic readout electronics. Microwave SQUID multiplexing offers a highly capable scaling solution through the use of inherently broadband circuitry, enabling readout of hundreds to thousands of channels per microwave line. As with any multiplexing technique, the channelization mechanism gives rise to electrical crosstalk which must be understood and controlled so as to not degrade the instrument sensitivity. Here, we explore implications relevant for TES bolometer array applications, focusing in particular on upcoming mm-wave observatories such as the Simons Observatory and AliCPT. We model the relative contributions of the various underlying crosstalk mechanisms, evaluate the difference between fixed tone and tone-tracking readout systems, and discuss ways in which crosstalk nonlinearity will complicate on-sky measurements.</p>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140887618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fabrication Process Control to Realize High Yield, Uniform, Repeatable Low-Frequency Detector Arrays for the LiteBIRD CMB Experiment 为 LiteBIRD CMB 实验实现高产、均匀、可重复的低频探测器阵列的制造工艺控制
IF 2 3区 物理与天体物理
Journal of Low Temperature Physics Pub Date : 2024-05-04 DOI: 10.1007/s10909-024-03129-7
Christopher Raum, Benjamin Westbrook, Shawn Beckman, Tucker Elleflot, Nicole Farias, Tommaso Ghigna, Nils Halverson, Johannes Hubmayr, Masashi Hazumi, Greg Jaehnig, Adrian Lee, Aritoki Suzuki
{"title":"Fabrication Process Control to Realize High Yield, Uniform, Repeatable Low-Frequency Detector Arrays for the LiteBIRD CMB Experiment","authors":"Christopher Raum, Benjamin Westbrook, Shawn Beckman, Tucker Elleflot, Nicole Farias, Tommaso Ghigna, Nils Halverson, Johannes Hubmayr, Masashi Hazumi, Greg Jaehnig, Adrian Lee, Aritoki Suzuki","doi":"10.1007/s10909-024-03129-7","DOIUrl":"https://doi.org/10.1007/s10909-024-03129-7","url":null,"abstract":"<p>The LiteBIRD experiment is an international spaceborne mission, led by JAXA, the Japan Aerospace Exploration Agency, to observe cosmic microwave background (CMB) radiation. The satellite will be deployed to measure and characterize the signature of the primordial gravitational waves from cosmic inflation in the <i>B</i>-mode polarization of the CMB radiation. LiteBIRD will also explore the nature of quantum gravity as well as attempt to detect the recombination peak and reionization peak with greater than 5<i>σ</i> significance for a tensor-to-scalar value of <i>r</i> = 0.01. These observations and measurements will take place over 15 separate frequency bands in the range of 34–448 GHz. The 15 frequency channels are separated into three telescopes—low, medium, and high frequency. This paper will describe the process flow developed to fabricate the low frequency detectors, covering bands from 34 to 161 GHz. The detector wafer itself has a device side and a sky side. The device side contains the trichroic polarization sensitive sinuous antennae coupled to transition-edge sensor detectors. The skyside contains the cosmic ray mitigation structure.</p>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140887368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preliminary Design of Detector Assembly for DIXE DIXE 探测器组件的初步设计
IF 2 3区 物理与天体物理
Journal of Low Temperature Physics Pub Date : 2024-05-04 DOI: 10.1007/s10909-024-03131-z
Jiejia Liu, Sifan Wang, Hai Jin, Qian Wang, Wei Cui
{"title":"Preliminary Design of Detector Assembly for DIXE","authors":"Jiejia Liu, Sifan Wang, Hai Jin, Qian Wang, Wei Cui","doi":"10.1007/s10909-024-03131-z","DOIUrl":"https://doi.org/10.1007/s10909-024-03131-z","url":null,"abstract":"<p>Diffuse X-ray Explorer is a proposed X-ray spectroscopic survey experiment for the China Space Station. Its detector assembly contains the transition edge sensor (TES) microcalorimeter and readout electronics based on the superconducting quantum interference device (SQUID) on the cold stage. The cold stage is thermally connected to the ADR stage, and a Kevlar suspension is used to stabilize and isolate it from the 4 K environment. TES and SQUID are both sensitive to the magnetic field, so a hybrid shielding structure consisting of an outer Cryoperm shield and an inner niobium shield is used to attenuate the magnetic field. In addition, IR/optical/UV photons can produce shot noise and thus degrade the energy resolution of the TES microcalorimeter. A blocking filter assembly is designed to minimize the effects. In it, five filters are mounted at different temperature stages, reducing the probability of IR/optical/UV photons reaching the detector through multiple reflections between filters and absorption. This paper will describe the preliminary design of the detector assembly and its optimization.</p>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140887356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The SQUID Controller Unit for the LiteBIRD Space Mission: Description, Functional Tests and Early Performance Assessment 用于 LiteBIRD 太空任务的 SQUID 控制装置:说明、功能测试和早期性能评估
IF 2 3区 物理与天体物理
Journal of Low Temperature Physics Pub Date : 2024-05-03 DOI: 10.1007/s10909-024-03124-y
Giulia Conenna, Andrea Tartari, Giovanni Signorelli, Andrea Passerini, Andrea Limonta, Mario Zannoni, Paolo Dal Bo, Eugenia Di Giorgi, Jean-François Cliche, Stefano Della Torre, Matt Dobbs, Luca Galli, Massimo Gervasi, Maurizio Massa, Andrea Moggi, Joshua Montgomery, Donato Nicolò, Michele Pinchera, Graeme Smecher, Franco Spinella
{"title":"The SQUID Controller Unit for the LiteBIRD Space Mission: Description, Functional Tests and Early Performance Assessment","authors":"Giulia Conenna, Andrea Tartari, Giovanni Signorelli, Andrea Passerini, Andrea Limonta, Mario Zannoni, Paolo Dal Bo, Eugenia Di Giorgi, Jean-François Cliche, Stefano Della Torre, Matt Dobbs, Luca Galli, Massimo Gervasi, Maurizio Massa, Andrea Moggi, Joshua Montgomery, Donato Nicolò, Michele Pinchera, Graeme Smecher, Franco Spinella","doi":"10.1007/s10909-024-03124-y","DOIUrl":"https://doi.org/10.1007/s10909-024-03124-y","url":null,"abstract":"<p>LiteBIRD is a satellite mission to be launched by JAXA in the early 2030s. It will measure the Cosmic Microwave Background (CMB) primordial B-modes with an unprecedented sensitivity. Microwave radiation will be detected by Transition Edge Sensors (TESs) arrays multiplexed in frequency domain and read by Superconducting QUantum Interference Devices (SQUIDs). The LiteBIRD SQUID Controller Unit (SCU), based on the heritage of the successful design used for the ground-based SPT3G experiment, presents some novel elements that make it suitable for a space-borne application. We compare our first breadboard model with the ground-based, Off-The-Shelf Components (COTS) version, by driving the same SQUID Array Amplifier (SAA) at 4 K, measuring relevant quantities such as noise, gain and bandwidth. We demonstrate that the noise added by our first prototype (including a switching part for redundancy purposes) never exceeds the noise added by the COTS-based electronics board, representing our benchmark. We also present the first noise estimates with the SAA cooled below 1 K, going closer to the conditions expected for LiteBIRD operation.</p>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140887364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信