Thesis (M. Sc.)--Carleton University, 2002. / Includes bibliographical references (p. 90-93). Also available in electronic format on the Internet.

Thesis (M.S.)--Worcester Polytechnic Institute. / Keywords: heat fluxes; fire testing; composites; instrumentation; material properties. Includes bibliographical references.

Dissertation (Ph.D.)-- Worcester Polytechnic Institute. / Keywords: temperature measurement; heat flux maps; Cone Calorimeter; three-dimensional heat conduction; fire growth models; retainer frame; ceramic fiberboard; edge effect; one-dimensional heat conduction; heat flux mapping procedure; infrared camera; specimen preparation; edge frame; one-dimensional heat conduction model; thermal properties. Includes bibliographical references (p.202-204).

Thesis (M.S.) -- Worcester Polytechnic Institute. / Keywords: measurement uncertainty; composite properties. Includes bibliographical references.

A thesis presented in fulfillment of the requirements for the degree of: Master of Science in Physics, University of the Witwatersrand, Johannesburg, 2017 / Tile Online software is a set of Trigger and Data Acquisition (TDAQ) required for the operation of Tile. It is built on top of ATLAS TDAQ software following AT LAS management tools and policies. The TDAQ software has been migrated from CMT to CMake, and from SVN to Git, in favor of modern software development tools and procedures. Since Tile Online software follows ATLAS TDAQ, there was a need of reorganization, simplification and clean-up of Tile Online software packages. Tile Online software packages have been migrated and reorganized to the newest ATLAS TDAQ release and the outcome is now used at Point-1 with success. The diagnostic and verification system (DVS) is part of the ATLAS TDAQ online software packages used for configuring and executing tests for TDAQ com ponents, and for advising recovery actions to the TDAQ operator/user. A wrapper way to start complex Tile DVS tests that required two separate programs to run on separate computers has been implemented and tests can now be run from a graphical user interface with detailed presentation of the results by non-experts. The upgrade of the Large Hadron Collider (LHC) to the High-Luminosity LHC will provide significant opportunities to explore new physics beyond the Standard Model. This however presents significant challenges to the detector and the TDAQ systems. The Tile Calorimeter will undergo upgrades whereby the current readout electronics will be completely redesigned and replaced in phase-II to cope with the increased luminosity imposed by the HL-LHC. / XL2018

Vita. / Digitized by Kansas State University Libraries

A Dissertation submitted to the Faculty of Science, University of the Witwatersrand, Johannesburg, in fulfilment of the requirements for the degree of Master of Science. Johannesburg, 2016. / Plastic scintillators play a key role in reconstructing the energy and tracks of hadronic particles that impinge the Tile Calorimeter of the ATLAS detector as a result of high energy particle collisions generated by the Large Hadron Collider of CERN. In the detector, plastic scintillators are exposed to harsh radiation environments and are therefore susceptible to radiation damage. The radiation damage effects to the optical properties and structural damage were studied for PVT based commercial scintillators EJ200, EJ208, EJ260 and BC408, as well as PS based UPS923A and scintillators manufactured for the Tile Calorimeter. Samples of dimensions 5x5x0.3 mm were subjected to irradiation using 6 MeV protons to doses of approximately 0.8 MGy, 8 MGy, 25 MGy and 25 MGy using the 6 MV tandem accelerator of iThemba LABS. Results show that damage leads to a reduced light output and loss in transmission character. Structural damage to the polymer base and the formation of free radicals occur for doses ≥ 8 MGy leading to reduced scintillation in the base and re-absorption of scintillation light respectively. Scintillators containing a larger Stokes shift, i.e. EJ260 and EJ208 exhibit the most radiation hardness. EJ208 is recommended as a candidate to be considered for the replacement of Gap scintillators in the TileCal for the 2018 upgrade. / LG2017

Following several terrorist attacks that have occurred during this decade, there is an urgent need to develop new technologies for the detection of highly energetic materials that can represent an explosive hazard. In an effort to contribute to the development of these new technologies, this work presents the design aspects of a chip-scale calorimeter that can be used to detect an explosive material by calorimetric methods. The aim of this work is to apply what has been done in the area of chip-scale calorimetry to the screening of highly energetic materials. The prototypes presented here were designed using computer assisted design and finite element analysis tools. The design parameters were set to satisfy the requirements of a sensor that can be integrated into a portable system (handheld) for field applications. The design approach consisted of developing a sensor with thick silicon membranes that can hold micro-size samples and that can operate at high temperatures, while keeping the cost of the sensor low. Contrary to other high resolution systems based on thin-film membranes, our prototypes exhibit a contribution from addenda that is comparable to that from the sample, and hence they have lower sensitivity. However, using thick membranes offers the advantage of producing sensors strong enough for this application and that have significantly lower cost. Once the prototypes were designed, the fabrication was performed using standard microfabrication techniques. Finally, the operation of our prototypes was demonstrated by conducting thermal analysis of different liquid and solid samples.

In preparations for the ATLAS experiment at the Large Hadron Collider at CERN, sections of the ATLAS Electromagnetic Endcap Calorimeter (EMEC) and Hadronic Endcap Calorimeter (HEC) were subjected to particle beams in the summer of 2002. The EMEC and HEC are non-compensating calorimeters with e/h > I: electromag¬netic showers will, on average; have a higher energy response than hadronic showers initiated by particles of the same energy. To reconstruct the energy of pions, the method of software compensation is investigated. Several beam energy dependent weighting schemes are studied, using calorimeter depth weights and cluster energy density weights. Finally, a beam energy independent cluster energy density weighting scheme is studied. Partial software compensation is achieved for pion energy recon¬struction, improving the energy resolution and response linearity of the calorimeters.

Thesis (Ph.D.). / Written for the Dept. of Physics. Title from title page of PDF (viewed 2008/01/11). Includes bibliographical references.