Hadronic jets play a vital role in the search for physics beyond the Standard Model at particle colliders. Jets are the most commonly produced collision products at hadron colliders like the LHC, and thus represent an extremely promising avenue for discovery. While this prevalence allows for Standard Model processes to be measured to extreme precision and exciting new physics to be searched for, analysis using jets comes with many challenges. The high rate of collision events that produce jets naturally leads to a large background that must be sorted through so that the most interesting events may be identified and recorded. This requires robust jet reconstruction, calibration, and triggering in order to maximize the amount of interesting jet events that can be analyzed for potential new discoveries. In this thesis, an analysis of the performance of the ATLAS jet trigger system during CERN LHC Run 2 is presented. Jet Trigger efficiency curves are analyzed for the full suite of HLT triggers from each year of Run 2 data collection, with differences in run conditions from year to year reviewed and their impacts on jet trigger efficiency analyzed. The effects of an improved jet calibration scheme implemented midway through Run 2 on jet trigger efficiencies and the fraction of recorded fully efficient data that is most useful for further physics analysis are investigated. Additionally, a search for new physics using dijet events at the trigger level is presented. Results of a partial Run 2 analysis using data collected through 2016 are presented and contributions to an upcoming full Run 2 analysis are discussed.

This second open access volume of the handbook series deals with detectors, large experimental facilities and data handling, both for accelerator and non-accelerator based experiments. It also covers applications in medicine and life sciences. A joint CERN-Springer initiative, the "Particle Physics Reference Library" provides revised and updated contributions based on previously published material in the well-known Landolt-Boernstein series on particle physics, accelerators and detectors (volumes 21A, B1,B2,C), which took stock of the field approximately one decade ago. Central to this new initiative is publication under full open access

The exploration of the subnuclear world is done through increasingly complex experiments covering a wide range of energy and performed in a large variety of environments ranging from particle accelerators, underground detectors to satellites and the space laboratory. The achievement of these research programs calls for novel techniques, new materials and instrumentation to be used in detectors, often of large scale. Therefore, fundamental physics is at the forefront of technological advance and also leads to many applications. Among these, are the progresses from space experiments whose results allow the understanding of the cosmic environment, of the origin and evolution of the universe after the Big Bang.