Leakage Testing Handbook

Leakage testing handbook giving fundamentals, theory, methods, detector equipment, and test medi

Research and technology, 1986

The mission of the NASA Langley Research Center is to increase the knowledge and capability of the United States in a full range of aeronautics disciplines and in selected space disciplines. This mission will be accomplished by: performing innovative research relevant to national needs and Agency goals; transferring technology to users in a timely manner; and providing development support to other United States Government agencies, industry, and the NASA centers. This report contains highlights of the major accomplishments and applications made during the past year. The highlights illustrate both the broad range of the research and technology activities at the NASA Langley Research Center and the contributions of this work toward maintaining United States leadership in aeronautics and space research

Electromagnetic Measurements with the KATRIN Pre-Spectrometer

The KArlsruhe TRItium Neutrino (KATRIN) Experiment will investigate the `electron antineutrino` mass with a sensitivity of 200meV/c2. A key to reach this sensititvity is a significant improvement of the MAC-E filter (Magnetic Adiabatic Collimation with Electrostatic filter) technology for the energy analysis of beta decay electrons. This thesis details the commissioning of the KATRIN pre-spectrometer, featuring a novel MAC-E filter design with regard to vacuum and electrostatic filtering

Cumulative index to NASA Tech Briefs, 1963-1967

Cumulative index to NASA survey on technology utilization of aerospace research outpu

Characterisation of the KATRIN tritium source and evaluation of systematic effects

The Karlsruhe Tritium Neutrino (KATRIN) Experiment aims to measure the effective electron antineutrino mass with a sensitivity of 200 meV (90 % C. L.) by analysing the kinematic endpoint of the tritium beta-electron spectrum. In this thesis, the systematic effects of KATRIN are evaluated. Since most of them are linked to the tritium source, the source cryostat performance is fully characterised in this work. With a dedicated measurement campaign performed with krypton-83m, energy scale-related systematic effects are investigated and the great capabilities of KATRIN in high-resolution spectroscopy of keV-scale electrons are demonstrated

A Dark Matter Search Using the Final SuperCDMS Soudan Dataset and the Development of a Large-Format, Highly-Multiplexed, Athermal-Phonon-Mediated Particle Detector

Over the past eighty years, numerous complementary observations of our universe have indicated that our current description of physics is far from complete. The "ordinary matter", such as electrons, protons, photons and neutrons, that constitutes the bulk of all human physical experiences is actually only a minority (about 16%) of the total mass of the universe. The remaining 84% is very poorly understood, but has profound effects on the dynamics and evolution of our universe. Because it does not interact with light, and is not observable in telescopes on earth, this extra mass is usually referred to as "dark matter". Although the dark matter is poorly understood, Weakly Interacting Massive Particles (WIMPs) are a well-motivated candidate that can be directly detected via a non-gravitational interaction with normal matter, potentially allowing for direct terrestrial detection and characterization of this dark matter. This dissertation is focused on this direct WIMP detection and will be broken into two main parts. The first part focuses on the blinded analysis of roughly three years of data collected from March 2012 to November 2015 by the SuperCDMS Soudan experiment. SuperCDMS Soudan consists of an array of 15, 0.6-kg, cryogenic, Ge iZIP particle detectors situated in a decommissioned iron mine in remote northern Minnesota. This analysis is optimized to be sensitive to theoretical WIMP masses above 10 GeV/c2. This result set the strongest limits for WIMP--germanium-nucleus interactions for WIMP masses greater than 12 Gev/c2. The second part focuses on the development new kind of particle detector in the style of a SuperCDMS iZIP, designed to simplify fabrication and readout, improve phonon-based position reconstruction, and help to scale to larger target arrays. These detectors replace the TES-based phonon sensors of the iZIP with Microwave Kinetic Inductance Detectors (MKIDs).</p

Argonne National Laboratory Reports

This report is a compilation of the formal Final Safety Analysis Addenda (FSAA's) to the EBR-II Hazard Summary Report and Addendum that have been prepared in support of certain modifications to the reactor-shutdown-system portion of the EBR-II plant protection system. Each major section is an edited version of the original FSAA for a particular modification and provides a description of the pre - and post -modification system, the rationale for the modification, and required supporting safety analysis

3rd International Workshop on Instrumentation for Planetary Missions : October 24–27, 2016, Pasadena, California

The purpose of this workshop is to provide a forum for collaboration, exchange of ideas and information, and discussions in the area of the instruments, subsystems, and other payload-related technologies needed to address planetary science questions. The agenda will compose a broad survey of the current state-of-the-art and emerging capabilities in instrumentation available for future planetary missions.Universities Space Research Association (USRA); Lunar and Planetary Institute (LPI); Jet Propulsion Laboratory (JPL)Conveners: Sabrina Feldman, Jet Propulsion Laboratory, David Beaty, Jet Propulsion Laboratory ; Science Organizing Committee: Carlton Allen, Johnson Space Center (retired) [and 12 others

Full Proceedings, 2018

Full conference proceedings for the 2018 International Building Physics Association Conference hosted at Syracuse University