Model Validation of Falling Particle Receivers with On-sun Experiments.
Abstract not provided.
Mills, Brantley↗
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Results for “Receivers”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Evaluating the Thermal Efficiency of Multistage Falling Particle Receivers Subject to Wind.
Abstract not provided.
Lee, Samuel↗
Design of a 140 GHz waveguide notch filter for millimeter-wave receiver module protection in fusion plasma diagnostics
A carefully designed waveguide-based millimeter-wave notch filter, operating at 140 GHz, safeguards plasma diagnostic instruments from gyrotron leakage. Here, utilizing cylindrical cavity resonators with aperture coupling, the filter efficiently resonates 140 GHz wave-power into the TE 11p mode, optimizing various geometrical parameters for practical fabrication and high-yield production. Thorough thermal analysis ensures its ability to handle power. The filter achieves outstanding performance with over 90 dB rejection at 140 GHz while providing low insertion loss over the passband (110–138 GHz), which is ideally suited for system-on-chip approach F-band diagnostic system applications.
70 PLASMA PHYSICS AND FUSION TECHNOLOGY↗
Structure of the Acinetobacter baumannii PmrA receiver domain and insights into clinical mutants aff
Explore the source record for details and available documents.
Palethorpe, Samantha↗
Search for Postinflationary QCD Axions with a Quantum-Limited Tunable Microwave Receiver
A search for cosmological axions has been performed by scanning a frequency region of 38 MHz centered at about 10.2 GHz, corresponding to an axion mass 𝑚 𝑎 ≃ 42 μ eV. The QUAX experimental apparatus, a haloscope comprised of a 1-liter volume tunable cavity immersed in an 8 T magnetic field and a quantum-limited detection chain, set limits on the axion-photon coupling at the 10 −14 GeV −1 level. As no signal candidate has been observed, viable hadronic axion models are ruled out in a currently preferred postinflationary region 𝑚 𝑎 > 40 μ eV.
Sardo Infirri, Giosue [INFN, Sezione di Padova; Un↗
Backaction-evading receivers with magnetomechanical and electromechanical sensors
Today's mechanical sensors are capable of detecting extremely weak perturbations while operating near the standard quantum limit. However, further improvements can be made in both sensitivity and bandwidth when we reduce the noise originating from the process of measurement itself—the quantum-mechanical backaction of measurement—and go below this ‘standard’ limit, possibly approaching the Heisenberg limit. One of the ways to eliminate this noise is by measuring a quantum nondemolition variable such as the momentum in a free-particle system. Here, we propose and characterize theoretical models for direct velocity measurement that utilize traditional electric and magnetic transducer designs to generate a signal while enabling this backaction evasion. We consider the general readout of this signal via electric or magnetic field sensing by creating toy models analogous to the standard optomechanical position-sensing problem, thereby facilitating the assessment of measurement-added noise. Using simple models that characterize a wide range of transducers, we find that the choice of readout scheme—voltage or current—for each mechanical detector configuration implies access to either the position or velocity of the mechanical subsystem. This in turn suggests a path forward for key fundamental physics experiments such as the direct detection of dark matter particles. Published by the American Physical Society 2024
74 ATOMIC AND MOLECULAR PHYSICS↗
Modular Design of Receiver Side Power Electronics for 200 kW High Power Dynamic Wireless Charging System
Dynamic wireless power transfer (DWPT) can provide energy to EVs in motion and extend the drive range. By upscaling the charging power to 200 kW (High Power DWPT), the percentage of electrified roadway reduces and the solution becomes cost-effective. However, coil coupling-coefficient variation during vehicle movement fluctuates the transferred power which is unfavorable for vehicle battery. Secondary regulation design can smooth the power but the converter design becomes very challenging due to requirement in high power, high efficiency, fast control, as well as high power density since the unit will be onboard. This paper provides the modular design approach of a 200 kW secondary side unit to achieve high performance and scalability. The DC/DC converter using SiC devices demonstrated 98.3% efficiency.
Xue, Lincoln↗
A Monolithic O-Band Coherent Optical Receiver for Energy-Efficient Links
Not Available
Movaghar, Ghazal↗
110–140-GHz Wide-IF-Band 65-nm CMOS Receiver Design for Fusion Plasma Diagnostics
Not provided.
Engineering↗
A 50-GBaud QPSK Optical Receiver With a Phase/Frequency Detector for Energy-Efficient Intra-Data Center Interconnects
Not Available
Valenzuela, Luis A.↗
Comparison of Nb 3 Sn Insulation Systems With as Received and De-Sized Glass
Epoxy cracking has been the main suspected contributor to training in Nb 3 Sn magnets for some time, as it leads to energy release and magnet quenching. Cracking in a superconducting composite can occur from several modes, and the likelihood of these modes is not well understood. Failure has been observed between insulation systems and the superconducting cable itself rather than within the cable or insulation. To target the behavior at the interface, samples have been fabricated and tested for Mode I fracture toughness in an adapted version of ASTM D5528. This work seeks to better characterize the fracture toughness of this interface to better understand how to model and design insulation systems.
Krave, Steven T. [Fermilab] (ORCID:000000021752145↗
On-sun testing of a high temperature bladed solar receiver and transient efficiency evaluation using Air.
Abstract not provided.
Ortega, Jesus↗
CCAT-prime: Designs and status of the first light 280 GHz MKID array and mod-cam receiver
The CCAT-prime project's first light array will be deployed in Mod-Cam, a single-module testbed and first light cryostat, on the Fred Young Submillimeter Telescope (FYST) in Chile's high Atacama desert in late 2022. FYST is a six-meter aperture telescope being built on Cerro Chajnantor at an elevation of 5600 meters to observe at millimeter and submillimeter wavelengths. 1 Mod-Cam will pave the way for Prime-Cam, the primary first generation instrument, which will house up to seven instrument modules to simultaneously observe the sky and study a diverse set of science goals from monitoring protostars to probing distant galaxy clusters and characterizing the cosmic microwave background (CMB). At least one feedhorn-coupled array of microwave kinetic inductance detectors (MKIDs) centered on 280 GHz will be included in Mod-Cam at first light, with additional instrument modules to be deployed along with Prime-Cam in stages. The first 280 GHz detector array was fabricated by the Quantum Sensors Group at NIST in Boulder, CO and includes 3,456 polarization- sensitive MKIDs. Current mechanical designs allow for up to three hexagonal arrays to be placed in each single instrument module. We present details on this first light detector array, including mechanical designs and cold readout plans, as well as introducing Mod-Cam as both a testbed and predecessor to Prime-Cam.
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND ↗
Measuring the Distance between an Emitter and a Receiver in the Wireless Communication Channel by Ultrawideband Chaotic Radio Pulses
The possibility of wireless distance measurement using ultrawideband chaotic radio pulses on the basis of the statistical signal analysis is discussed. The results of experimental verification of the proposed approach are reported.
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSIC↗
Completion of Level 2 Milestone – M2AT 19IN030401044, Complete construction of the gas and moisture supply systems and receive the custom-designed tube furnace from the vendor
The Advanced Gas Reactor (AGR) program has designed and is now constructing the Air/Moisture Ingress Experiment (AMIX) facility to test irradiated tristructural isotropic (TRISO) fuels under air or moisture-ingress accidents postulated for high-temperature gas-cooled reactors. AMIX will ultimately be installed in the Fuel Conditioning Facility at the Materials and Fuels Complex (MFC) at Idaho National Laboratory. AMIX consists of a gas supply (capable of supplying mixtures of air/helium and steam/helium), a tube furnace capable of accepting samples up to 6 cm in diameter and heating them to 1650°C, gamma detectors for measuring the release of condensable, gamma-emitting fission products, and cold traps with gamma detectors for measuring the release of fission gases. Data obtained from AMIX experiments will be used to qualify this new generation of TRISO fuels with the U.S. Nuclear Regulatory Commission, and inform models and simulations of TRISO fuel accident performance and source term.
42 ENGINEERING↗
Outgassing analysis on materials received resin bleed and lay-up
The purpose of the process was to identify the out-gassing species on resin and lay-up materials.
36 MATERIALS SCIENCE↗
Autonomous Acoustic Receiver System for 3D Tracking and Monitoring Real-Time Fish Survival (CRADA 448)
Develop technologies that reduce the delay between changing hydropower operations and the acquisition of knowledge regarding fish behavior and survival and to reduce the cost and effort to obtain behavioral information of fish that is both accurate and detailed. The technologies being proposed would allow hydropower operators to quickly understand the impact of operational changes on fish and allow fisheries researchers to study fish behavior in high resolution at locations that previously would have been unfeasible.
13 HYDRO ENERGY↗