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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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At least 361 records · Page 20
All sourcesNASA NTRSDOE OSTI
DOE OSTI2016

Breakup of loosely bound nuclei at intermediate energies for nuclear astrophysics and the development of a position sensitive microstrip detector system and its readout electronics using ASICs technologies

The work performed under this grant has led to the development of a detection system that will be used to measure reaction rates for proton or neutron capture reactions at stellar energies on radioactive ions far from stability. The reaction rates are needed to better understand the physics of nucleosynthesis in explosive stellar processes such as supernovae and x-ray burst events. The radioactive ions will be produced at the Radioactive Ion Beam Facility (RIBF) at RIKEN near Tokyo, Japan. During the course of this work, the group involved in this project has expanded by several institutions in Europe and Japan and now involves collaborators from the U.S., Japan, Hungary, Romania, Germany, Spain, Italy, China, and South Korea. As part of the project, a novel design based on large-area silicon detectors has been built and tested. The work has involved mechanical construction of a special purpose vacuum chamber, with a precision mounting system for the silicon detectors, development of a new ASICs readout system that has applications with a wide variety of silicon detector systems, and the development of a data acquisition system that is integrated into the computer system being used at RIBF. The parts noted above that are needed to carry out the research program are completed and ready for installation. Several approved experiments that will use this system will be carried out in the near future. The experimental work has been delayed due to a large increase in the cost and availability of electrical power for RIBF that occurred following the massive earthquake and tsunami that hit Japan in the spring of 2011. Another component of the research carried out with this grant involved developing the theoretical tools that are required to extract the information from the experiments that is needed to determine the stellar reaction rates. The tools developed through this part of the work will be made freely available for general use.

73 NUCLEAR PHYSICS AND RADIATION PHYSICS↗
DOE OSTI2017

Test of New Readout Electronics for the BONuS12 Experiment

For decades, electron-proton scattering experiments have been providing a large amount of data on the proton structure function. However, because of the instability of free neutrons, fewer experiments have been able to study the neutron structure function. The BONuS collaboration at Jefferson Laboratory addresses this challenge by scattering electrons off a deuterium target, using a RTPC capable of detecting the low-momentum spectator protons near the target. Events of electrons scattering on almost free neutrons are selected by constraining the spectator protons to very low momenta and very backward scattering angles. In 2005, BONuS successfully measured the neutron structure with scattering electrons of up to 5.3 GeV energy. An extension of this measurement has been approved using the newly upgraded 12 GeV electron beam and CLAS12 (CEBAF Large Acceptance Spectrometer). For this new set of measurements, a new RTPC detector using GEM trackers is being developed to allow measurements of spectator protons with momenta as low as 70 MeV/c. The new RTPC will use a new readout electronic system, which is also used by other trackers in CLAS12. This thesis will present the first tests of this electronics using a previously built RTPC of similar design.

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS↗
DOE OSTI2018

Quest for a Top Quark Partner and Upgrade of the Pixel Detector Readout Chain at the CMS

After the observation of a new particle at CERN experiments, which is consistent with being the Higgs boson, the partner of the top quark is the most anticipated candidate to be discovered next. In many extensions of the standard model of particle physics the principle of naturalness dictates that the top quark partner should exist and be relatively light, at or below the TeV scale. It is hence expected to be accessible at energies and luminosities provided by the LHC machine within the next years of running. This proposal calls for supporting the effort targeting the searches for the top quark partner at the CMS experiment. We focus on scenarios and techniques that have not yet been fully explored at CMS, and that carry a large potential for new physics discovery in the immediate future. The second part of the proposal focuses on the R&D effort aiming for continuing high-quality physics program at the CMS at the high instantaneous luminosities. We propose to take one of the leading roles in the forthcoming upgrade of the Pixel detector at the CMS, and upgrade the data acquisition readout chain that would increase the data volume throughput for the new detector.

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS↗
DOE OSTI2017

The development, testing and characterisation of a straw tracking detector and readout system for the Fermilab muon g-2 experiment

The anomalous magnetic moments of leptons can be both measured and theoretically predicted with high precision, and as such provide stringent tests of the Standard Model (SM) of particle physics. The anomalous magnetic moment of the muon, $a_\mu$, in particular offers sensitivity to new physics within the reach of current experiments. The current world’s best measurement of aμ made at the Brookhaven National Laboratory (BNL) deviates from the SM prediction by over 3σ, providing a tantalising but inconclusive hint that contributions from new physics may be present. A new $a_\mu$ experiment is currently under construction at the Fermi National Accelerator Laboratory (Fermilab), known as the Fermilab muon g-2 experiment. Due to commence in 2017, this new experiment is expected to improve the experimental measurement precision of $a_\mu$ by a factor of 4, and is seeking to confirm or reject the current discrepancy. The experiment, like its BNL predecessor, will measure the precession of the $\mu^{+}$ spin in a magnetic storage-ring. This new experiment has three straw tracking detectors used to measure the beam profile of the stored $\mu^{+}$, as well as other dynamic properties of the beam. This thesis describes the design of these detectors, and the data acquisition system and subsequent data processing systems that have been developed to read them out and make their data available for physics analysis. The performance of the straw trackers and the readout systems at a number of beam tests and test stands is presented, in addition to Monte-Carlo simulations of the trackers in the final experiment.

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS↗
DOE OSTI2019

First Beam Test of UT Sensors with the SALT 3.0 Readout ASIC

This note presents the results of a beam test conducted at the Fermilab test beam facility in March 2019. The beam test represents the first such test of the UT readout ASIC, SALT 3.0, in a beam with production UT sensors. Two sensors were tested, one an unirradiated p-in-n sensor, and the second a n-in-p sensor irradiated to twice the maximum expected uence. The beam test demonstrates that the SALT 3.0 ASIC meets our specifications, and can be used for the production. Due to specific issues with the data acquisition system that will not be present in the system in LHCb, a higher threshold was used in the beam test, corresponding to about $6 \sigma$ on the noise. With this higher threshold, the signal-to-noise ratio (S/N) and efficiency are measured. For the unirradiated sensor, a S/N of about 12 is achieved, with a single-hit effciency of at least 99.5%. For the irradiated sensor, a S/N of about 11 is obtained, with a single-hit effciency of about 94%. In the final system in LHCb with a proper threshold of about $3-4 \sigma$ of the noise, we expect to achieve a single-hit effciency of at least 99.5%.

43 PARTICLE ACCELERATORS↗
DOE OSTI2020

Evaluation & Development of Algorithms & Techniques for Streaming Detector Readout

The advancement in microelectronics capabilities, computing, and data science in the last decade has been remarkable. With the start of the 12 GeV Science Program at Jefferson Lab (JLab) and the conceptual detector design for the upcoming Ion Collider (EIC) in mind, we have evaluated and developed the possibility of evolving and improving the existing nuclear science research workflow based on these advances. Specifically, we have prototyped components of streaming readout.

43 PARTICLE ACCELERATORS↗
DOE OSTI2014

Sens-Tech XDAS Readout System

In December 2010, the old British Phototube manufacture, EMI, called about their new product -after the company changed its name. The system they are marketing is very suitable for our use, digitizing charge from the detector in the beam line. Their system was capable of a large number of channels. Initially, we were offered a system based on integration with CCD readout. It is called the HE system. After many exchanges we bought a 64-channel system. It came pre assembled.

43 PARTICLE ACCELERATORS↗
DOE OSTI2021

A multi-channel cryogenic low-noise skipper-CCD readout ASIC

• Skipper CCDs provide exceptionally low noise useful for dark matter detection• MIDNA ASIC enables scaled cryogenic Skipper CCD readout• Noise performance proven to specification at room temperature with CCD• Liquid nitrogen measurements show functionality with more to come• Future development will integrate more sensitive signals and averaging capability

England, Troy↗
DOE OSTI2023

Developing Advanced Charge Readout Techniques for nEXO and Future Liquid Xenon OVBB Detectors (Final Report)

This award supported the Yale group’s efforts on nEXO, which included the following: 1) Developed techniques for measuring the outgassing of materials into liquid xenon (LXe) and a model for predicting the electron lifetime in nEXO and future LXe TPCs 2) Work to develop the conceptual design for the nEXO Photon Detector subsystem and TPC subsystem interconnections 3) Developed simulation of charge and light propagation and readout in nEXO.

73 NUCLEAR PHYSICS AND RADIATION PHYSICS↗
DOE OSTI2023

Streaming Readout and Remote Compute

Streaming Readout Data Acquisition systems coupled with distributed resources spread over vast geographic distances present new challenges to the next generation of experiments. High bandwidth modern network connectivity opens the possibility to utilize large, general-use, HTC systems that are not necessarily located close to the experiment. Near real-time response rates and workflow colocation can provide high reliability solutions to ensure efficient use of beam time. This talk will focus on a few technologies currently being developed at Jefferson Lab and in collaboration with ESnet to support fully streaming DAQ systems.

Lawrence, David↗
DOE OSTI2024

RTDP: Streaming Readout Real-Time Development and Testing Platform

The Thomas Jefferson National Accelerator Facility (JLab) has created and is currently working on various tools to facilitate streaming readout (SRO) for upcoming experiments. These include reconstruction frameworks with support for Artificial Intelligence/Machine Learning, distributed High Throughput Computing (HTC), and heterogeneous computing which all contribute significantly to swift data processing and analysis. Designing SRO systems that combine such components for new experiments would benefit from a platform that would combine both simulation and execution components for simulation, testing, and validation before large investments are made. The Real-Time Development Platform (RTDP) is being developed as part of an LDRD funded project at JLab. RTDP aims to establish a seamless connection between algorithms, facilitating the seamless processing of data from SRO to analysis, as well as enabling the execution of these algorithms in various configurations on compute and data centers. Individual software components simulating specific hardware can be replaced with actual hardware when it is available.

Gyurjyan, Vardan↗
DOE OSTI2024

Beam test results for the Endcap Timing ReadOut Chip (ETROC2) for the CMS ETL upgrade

The Endcap Timing ReadOut Chip (ETROC) for the Compact Muon Solenoid (CMS) Minimum ionizing particle Timing Detector (MTD) is designed to process Low Gain Avalanche Diode (LGAD) signals with a time resolution of 40-50ps per hit, with 30-35 ps per charged particle using two layer detector. The ETROC2, is the first full size (16x16 pixels) and full functionally design that has been tested in hadron and electron beams at CERN and DESY (Sep 2023 - June 2024). Precision timing studies at these test beams are done using a self-referential beam telescope composed of up to 4 layers/chips. This talk describes the ETROC2 beam telescope and summarizes the performance of the ETROC2 chips bump-bonded to (16x16) Fondazione Bruno Kessler (FBK) and Hamamatsu Photonics K.K. (HPK) LGAD sensors using results from recent test beams. The experiences and lessons learned during the course of these test beams are also detailed in this talk.

Safdari, Murtaza↗
NASA NTRS1964

Compact cartridge drives coded tape at constant readout speed

To facilitate storage and repetitive reading of short-program coded tape, a cartridge case, containing mechanical drive and readout assemblies, has been fabricated. The drive transports the tape past a conventional pickup device during the reading function.

Austin, D. C.↗
NASA NTRS1967

Numerical data frame readout system used in testing telemetry systems

Digital telemetry systems are treated by a display system that offers direct readout as high data rates. The rates appear in numerical format and are adaptable to photographic recording techniques. The system can show bit dropouts at a memory output or locate a malfunction in a system.

Cote, C. E.↗
NASA NTRS1968

Amplitude and frequency readout overlay

Amplitude and frequency readout overlay simplifies the interpretation of oscillograph traces for full scale deflections of one inch. The overlay increases accuracy in data interpretation and saves time in analyzing oscillograph records.

Fitch, A. E.↗