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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 505 records · Page 28
All sourcesNASA NTRSDOE OSTI
DOE OSTI2016

11-BM CMS Beamline Radiation Shielding Analysis

Beamlines are required to shield against two primary sources of radiation, the primary gas bremsstrahlung (GB) and the synchrotron beam, as well as the secondary radiation resulting from the scattering of these two primary beams by the beamline components and/or air. The shielding requirements for the First Optical Enclosure (FOE) are dominated by the scattering of the primary bremsstrahlung and not the synchrotron beam.

36 MATERIALS SCIENCE↗
DOE OSTI2019

Strong SUSY at ATLAS and CMS [PowerPoint]

Introduction points: LHC performed very well, delivering > 150 fb -1 ; Huge challenge to quickly process this amount of data; Understand detector & object performance; pT miss tails very important for SUSY searches; Most results on full Run 2 data set will come in Summer; SUSY searches are expanding; Big inclusive searches complemented by dedicated searches to close gaps in coverage; Machine learning for H, b, c, top,… tagging; and Improved analysis techniques

43 PARTICLE ACCELERATORS↗
DOE OSTI2019

Heavy-Flavor Spectroscopy in ATLAS and CMS [PowerPoint]

The slide presentation covers: B→K*μμ angular analysis and prospects, CP Violation in the B s →J/ψϕ decay, Angular analysis of the B→J/ψΛp decay; Spectroscopy of excited B s and B c mesons, and Conclusions.

43 PARTICLE ACCELERATORS↗
DOE OSTI2019

Characterization of Silicon Sensors for HGCal in CMS

The High-granularity Calorimeter silicon sensors suffer from leakage currents. Measurements of the leakage current as a function of temperature and reverse bias voltage were carried out using a temperature chamber and digital source-meter. In addition to analysis of the sensors, a redesigned data acquisition software was written and utilized to simplify the setup. It was determined that the sensors do follow expected behavior for the leakage current as a function of both reverse bias voltage and temperature, but there is some slight deviation at lower temperatures.

43 PARTICLE ACCELERATORS↗
DOE OSTI2019

Characterization of CMS High Granularity Calorimeter Silicon Sensors

This poster seeks to characterize the quality of silicon sensors that will potentially be used in the High Granularity Calorimeter at the Compact Muon Solenoid detector. The silicon sensors used in this analysis were provided by the companies Hammatsu and NHanced. The silicon sensors were characterized by measuring the capacitance of the MOS and diode structures on the sensor's test structures both before and after irradiation.

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND ↗