Nonlinear H∞ synthesis is developed to solve the tracking control problem restricted to a two degrees-of-freedom (DOF) underactuated mechanical manipulator where position measurements are the only available information for feedback. A review is then given of the main non-perturbative methods which have been used to perform theoretical studies of multiphoton processes. Thirdly, laser-assisted electron-atom collisions. Secondly, the emission by atoms of high-order harmonics of the frequency of the driving laser and their use to generate laser pulses having durations in the attosecond range. Firstly, the multiphoton ionization of atoms and the phenomenon of "above-threshold ionization". An outline is given of the basic properties found in the study of three important multiphoton processes. As a result, new phenomena, known as multiphoton processes, can occur. The peak intensities of these laser pulses are so high that the corresponding laser fields can compete with, or even dominate, the Coulomb field in governing the dynamics of atomic systems. The exclusion limits set for the D5 operators mass suppression scale at 14 TeV and 1000 fb-1are 2-3 times better than previous results at 8 TeV and 10 fb-1.įor the first time limits have been set on which vector mediator mass models can be excluded at 14 TeV.įollowing a historical introduction on the nature of light and its interaction with matter, a survey is given of the development of lasers capable of delivering short pulses of very intense radiation. The signal models which are in focus are those which try to explain dark matter without adding new theories to the standard model or QFT, such as the effective theory D5 operator and light vector mediator models. This thesis focuses on how a mono-jet analysis looking for different wimp models of dark matter will be affected by this increase in pile-up rate.
This thesis instead uses data from Monte Carlo simulations for the particle collisions and then uses so called smearing functions to emulate the detector responses.
One disadvantage of the upgrade is that it will be harder for the atlas detector to isolate unique particle collisions since more and more collisions will occur simultaneously, so called pile-up.įor 14 TeV there does not exist a full simulation of the atlas detector. After the upgrade the LHC will be able to accelerate proton beams to such a velocity thateach proton has a center of mass energy of 14 TeV. The focus of this thesis lies on the so called phase II upgrade which will preliminarily be completed in 2023. The LHC at CERN is now undergoing a set of upgrades to increase the center of mass energy for the colliding particles to be able to explore new physical processes.
0 kommentar(er)
