Journal of Low Temperature Physics最新文献_第7页

Microcalorimeter Absorber Optimization for ATHENA and LEM 用于 ATHENA 和 LEM 的微量热计吸收器优化

IF 1.1 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2024-06-18 DOI: 10.1007/s10909-024-03173-3

Edward Wassell, Joseph Adams, Simon Bandler, James Chervenak, Renata Cumbee, Fred Finkbeiner, Joshua Fuhrman, Samuel Hull, Richard Kelley, Caroline Kilbourne, Jennette Mateo, Haruka Muramatsu, Frederick Porter, Asha Rani, Kazuhiro Sakai, Stephen Smith, Nicholas Wakeham, Sang Yoon

{"title":"Microcalorimeter Absorber Optimization for ATHENA and LEM","authors":"Edward Wassell, Joseph Adams, Simon Bandler, James Chervenak, Renata Cumbee, Fred Finkbeiner, Joshua Fuhrman, Samuel Hull, Richard Kelley, Caroline Kilbourne, Jennette Mateo, Haruka Muramatsu, Frederick Porter, Asha Rani, Kazuhiro Sakai, Stephen Smith, Nicholas Wakeham, Sang Yoon","doi":"10.1007/s10909-024-03173-3","DOIUrl":"10.1007/s10909-024-03173-3","url":null,"abstract":"<div><p>High quantum efficiency (QE) X-ray absorbers are needed for future X-ray astrophysics telescopes. The Advanced Telescope for High ENergy Astrophysics (ATHENA) mission requirements for the X-ray Integral Field Unit (X-IFU) instrument dictate, at their most stringent, that the absorber achieve vertical QE > 90.6% at 7 keV and low total heat capacity, 0.731 pJ/K. The absorber we have designed is 313 µm square composed of 1.05 μm Au and 5.51 μm electroplated Bi films (Barret et al. in Exp Astron 55:373–426, 2023). Overhanging the TES, the absorber is mechanically supported by 6 small legs whose 5 μm diameter is tuned to the target thermal conductance for the device. Further requirements for the absorber for X-IFU include a > 40% reflectance at wavelengths from 1 to 20 μm to reduce shot noise from infrared radiation from higher temperature stages in the cryostat. We meet this requirement by capping our absorbers with an evaporated Ti/Au thin film. Additionally, narrow gaps between absorbers are required for high fill fraction, as well as low levels of fine particulate remaining on the substrate and zero shorts between absorbers that may cause thermal crosstalk. The Light Element Mapper (LEM) is an X-ray probe concept optimized to explore the soft X-ray emission from 0.2 to 2.0 keV. These pixels for LEM require high residual resistance ratio (RRR) thin 0.5 µm Au absorbers to thermalize uniformly and narrow < 2 μm gaps between pixels for high areal fill fraction. This paper reports upon technology developments required to successfully yield arrays of pixels for both mission concepts and presents first testing results of devices with these new absorber recipes.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10909-024-03173-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141522838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hierarchical Phased-Array Antennas Coupled to Al KIDs: A Scalable Architecture for Multi-band Millimeter/Submillimeter Focal Planes 与 Al KID 相耦合的分层相控阵天线：多波段毫米波/亚毫米波焦平面的可扩展架构

IF 1.1 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2024-06-17 DOI: 10.1007/s10909-024-03110-4

Jean-Marc Martin, Junhan Kim, Fabien Defrance, Shibo Shu, Andrew D. Beyer, Peter K. Day, Jack Sayers, Sunil R. Golwala

{"title":"Hierarchical Phased-Array Antennas Coupled to Al KIDs: A Scalable Architecture for Multi-band Millimeter/Submillimeter Focal Planes","authors":"Jean-Marc Martin, Junhan Kim, Fabien Defrance, Shibo Shu, Andrew D. Beyer, Peter K. Day, Jack Sayers, Sunil R. Golwala","doi":"10.1007/s10909-024-03110-4","DOIUrl":"10.1007/s10909-024-03110-4","url":null,"abstract":"<div><p>We present the optical characterization of two-scale hierarchical phased-array antenna kinetic inductance detectors (KIDs) for millimeter/submillimeter wavelengths. Our KIDs have a lumped-element architecture with parallel plate capacitors and aluminum inductors. The incoming light is received with a hierarchical phased array of slot dipole antennas, split into 4 frequency bands (between 125 GHz and 365 GHz) with on-chip lumped-element band-pass filters, and routed to different KIDs using microstriplines. Individual pixels detect light for the 3 higher-frequency bands (190–365 GHz), and the signals from four individual pixels are coherently summed to create a larger pixel detecting light for the lowest frequency band (125–175 GHz). The spectral response of the band-pass filters was measured using Fourier transform spectroscopy (FTS), the far-field beam pattern of the phased-array antennas was obtained using an infrared source mounted on a 2-axis translating stage, and the optical efficiency of the KIDs was characterized by observing loads at 294 K and 77 K. We report on the results of these three measurements.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10909-024-03110-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141522840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Majorana Modes and Fano Resonances in Aharonov–Bohm Ring with Topologically Nontrivial Superconducting Bridge 具有拓扑非琐碎超导桥的阿哈诺夫-玻姆环中的马约拉纳模式和法诺共振

IF 1.1 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2024-06-15 DOI: 10.1007/s10909-024-03171-5

S. V. Aksenov, M. Yu. Kagan

引用次数: 0

Drag on Cylinders Moving in Superfluid (^3)He-B as the Dimension Spans the Coherence Length 在超流体 $$^3$He-B 中移动的圆柱体受到的阻力随着维度跨越相干长度而变化

IF 1.1 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2024-06-15 DOI: 10.1007/s10909-024-03165-3

S. Autti, R. P. Haley, A. Jennings, G. R. Pickett, E. V. Surovtsev, V. Tsepelin, D. E. Zmeev

{"title":"Drag on Cylinders Moving in Superfluid (^3)He-B as the Dimension Spans the Coherence Length","authors":"S. Autti, R. P. Haley, A. Jennings, G. R. Pickett, E. V. Surovtsev, V. Tsepelin, D. E. Zmeev","doi":"10.1007/s10909-024-03165-3","DOIUrl":"10.1007/s10909-024-03165-3","url":null,"abstract":"<div><p>Vibrating probes when immersed in a fluid can provide powerful tools for characterising the surrounding medium. In superfluid <span>(^3)</span>He-B, a condensate of Cooper pairs, the dissipation arising from the scattering of quasiparticle excitations from a mechanical oscillator provides the basis of extremely sensitive thermometry and bolometry at sub-millikelvin temperatures. The unique properties of the Andreev reflection process in this condensate also assist by providing a significantly enhanced dissipation. While existing models for such damping on an oscillating cylinder have been verified experimentally, they are valid only for flows with scales much greater than the coherence length of <span>(^3)</span>He, which is of the order of a hundred nanometres. With our increasing proficiency in fabricating nanosized oscillators, which can be readily used in this superfluid, there is a pressing need for the development of new models that account for the modification of the flow around these smaller oscillators. Here we report preliminary results on measurements of the damping in superfluid <span>(^3)</span>He-B of a range of cylindrical nanosized oscillators with radii comparable to the coherence length and outline a model for calculating the associated drag.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10909-024-03165-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141337504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Square-well Model for Superconducting Pair Potential 超导对电位的方形阱模型

IF 1.1 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2024-06-14 DOI: 10.1007/s10909-024-03169-z

Erkki Thuneberg

引用次数: 0

Design and Simulation of TiN-Based Suspended Meander Kinetic Inductance Detectors (KIDs) for Visible and Near-Infrared Astronomy Applications 设计和模拟用于可见光和近红外天文应用的 TiN 基悬浮蜿蜒动感探测器 (KID)

IF 1.1 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2024-06-12 DOI: 10.1007/s10909-024-03138-6

Maria Appavou, Lucas Ribeiro, Paul Nicaise, Jie Hu, Jean-Marc Martin, Josiane Firminy, Christine Chaumont, Piercarlo Bonifacio, Faouzi Boussaha

引用次数: 0

Exploring the Dielectric Response of Borophene Core–Shell Structure through Monte Carlo Simulations 通过蒙特卡罗模拟探索硼吩核壳结构的介电响应

IF 1.1 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2024-06-11 DOI: 10.1007/s10909-024-03168-0

Hussein Sabbah, D. Kabouchi, Z. Fadil, R. El Fdil, A. Mhirech, E. Salmani, Mohamed A. Habila, P. Rosaiah, Chaitany Jayprakash Raorane

引用次数: 0

Use of Superfluid Helium to Observe Directionality of Galactic Dark Matter 利用超流体氦观测银河暗物质的方向性

IF 1.1 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2024-06-09 DOI: 10.1007/s10909-024-03170-6

G. M. Seidel, C. Enss

引用次数: 0

Thermal Annealing of AlMn Transition Edge Sensors for Optimization in Cosmic Microwave Background Experiments 为优化宇宙微波背景实验而对铝锰过渡边缘传感器进行热退火处理

IF 1.1 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2024-06-08 DOI: 10.1007/s10909-024-03130-0

Benjamin Westbrook, Bhoomija Prasad, Christopher R. Raum, Adrian T. Lee, Aritoki Suzuki, Johannes Hubmayr, Shannon M. Duff, Micheal J. Link, Tammy J. Lucas

{"title":"Thermal Annealing of AlMn Transition Edge Sensors for Optimization in Cosmic Microwave Background Experiments","authors":"Benjamin Westbrook, Bhoomija Prasad, Christopher R. Raum, Adrian T. Lee, Aritoki Suzuki, Johannes Hubmayr, Shannon M. Duff, Micheal J. Link, Tammy J. Lucas","doi":"10.1007/s10909-024-03130-0","DOIUrl":"10.1007/s10909-024-03130-0","url":null,"abstract":"<div><p>The 2020 decadal review recognized the measurement of the polarization of the cosmic microwave background (CMB) to be a top priority for the decade. CMB experiments including POLARBEAR2/Simons Array, Atacama Cosmology Telescope/Advanced-ACT, SPT-3G, the Simons Observatory, and CMB-S4 have or will use transition edge sensor (TES) bolometer fabricated with Aluminum doped with Manganese (AlMn). AlMn is a popular material choice as the superconducting transition temperature (<span>(T_c)</span>) and normal resistance (<span>(R_n)</span>) of the TES can be tuned with Mn concentration, geometric patterning, film thickness, and thermal annealing. In addition the conductivity is appropriate for both time division multiplexing and frequency division multiplexing that require 10 m<span>(Omega)</span> and 1 <span>(Omega)</span> sensors respectively. In this paper we present work on the ability to tune the <span>(T_c)</span> of a film based on its time and temperature thermal tuning profile combined with room temperature monitoring of film resistivity. Such control allows for the fabrication of a wide range of TES parameters from a single AlMn concentration. Scanning electron microscope (SEM) imaging shows that the AlMn film’s grain boundaries are changed by thermal annealing making the film more conductive and raising its superconducting transition temperatures, and that at high enough temperatures will eventually recover the <span>(T_c)</span> of bulk Al. We find that baking films at <span>(sim)</span>200 <span>(^circtext{C})</span> for tens of minutes yields a <span>(T_c)</span> that is suitable for 100 mK base temperature experiments and we present on the thermal tune profiles of several different thicknesses of AlMn.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141368034","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-B Transition in Superfluid (^3)He and Cosmological Phase Transitions 超流体 $$^3$He 中的 A-B 转变与宇宙学相变

IF 1.1 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2024-06-08 DOI: 10.1007/s10909-024-03151-9

Mark Hindmarsh, J. A. Sauls, Kuang Zhang, S. Autti, Richard P. Haley, Petri J. Heikkinen, Stephan J. Huber, Lev V. Levitin, Asier Lopez-Eiguren, Adam J. Mayer, Kari Rummukainen, John Saunders, Dmitry Zmeev

{"title":"A-B Transition in Superfluid (^3)He and Cosmological Phase Transitions","authors":"Mark Hindmarsh, J. A. Sauls, Kuang Zhang, S. Autti, Richard P. Haley, Petri J. Heikkinen, Stephan J. Huber, Lev V. Levitin, Asier Lopez-Eiguren, Adam J. Mayer, Kari Rummukainen, John Saunders, Dmitry Zmeev","doi":"10.1007/s10909-024-03151-9","DOIUrl":"10.1007/s10909-024-03151-9","url":null,"abstract":"<div><p>First-order phase transitions in the very early universe are a prediction of many extensions of the Standard Model of particle physics and could provide the departure from equilibrium needed for a dynamical explanation of the baryon asymmetry of the Universe. They could also produce gravitational waves of a frequency observable by future space-based detectors such as the Laser Interferometer Space Antenna. All calculations of the gravitational wave power spectrum rely on a relativistic version of the classical nucleation theory of Cahn-Hilliard and Langer, due to Coleman and Linde. The high purity and precise control of pressure and temperature achievable in the laboratory made the first-order A to B transition of superfluid <span>(^3)</span>He ideal for test of classical nucleation theory. As Leggett and others have noted, the theory fails dramatically. The lifetime of the metastable A phase is measurable, typically of order minutes to hours, far faster than classical nucleation theory predicts. If the nucleation of B phase from the supercooled A phase is due to a new, rapid intrinsic mechanism that would have implications for first-order cosmological phase transitions as well as predictions for gravitational wave production in the early universe. Here we discuss studies of the A-B phase transition dynamics in <span>(^3)</span>He, both experimental and theoretical, and show how the computational technology for cosmological phase transition can be used to simulate the dynamics of the A-B transition, support the experimental investigations of the A-B transition in the QUEST-DMC collaboration with the goal of identifying and quantifying the mechanism(s) responsible for nucleation of stable phases in ultra-pure metastable quantum phases.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10909-024-03151-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141369811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0