Beam-Beam Effect :: essays research papers

Beam-beam effect, or beam-beam interaction, is a recent research being conducted over many areas throughout the world, from European laboratories to American Institutes. Basically the issue involves the passing through of proton bunches which results in many different types of effect, sometimes including the unexpected. Aside from the shooting of particles across one another, usually the collision rate of the protons generates a certain amount of energy. Today, the issue is to focus on modifying new colliders to enhance the effectiveness of the machines. The study of the beam-beam effect involves particle colliders which determines the collision rate of protons. One of the commonly used collider is the LHC, which stands for Large Hadron Collider. The LHC is an accelerator which brings protons and ions into collisions at higher energies than ever achieved before. This will allow scientists to penetrate still further into the structure of matter and recreate the conditions prevailing in the early universe, just after the "big bang". It is represented by a thick gaussian lens, and the ring is described by a 9th-order Taylor map. At the single-particle level we compare the dynamic aperture with and without the beam-beam effect. At the multiparticle level, using a "strong-strong" description of the beam-beam interaction, we compare the collision rate with a linear lattice map and with the full nonlinear map. The LHC is being used at CERN, the world's largest physics center for particle physics exploring what matter is made of, and what forces hold it together. Many different models for this effect have been conducted before, but most of them often ignored longitudinal motions of the particles, meaning that they only look for steady-state solutions, or assumed one beam contained a larger number of particles. These are usually known as "weak-strong" simulations. The LHC being developed is a "strong-strong" simulation in that it treats both beams equally and allows them to have arbitrary relative strengths. It is dynamic in that it models the motion on a turn-by-turn basis looking for coherent oscillations in the beam shape. It uses a variety of methods for computing the electric fields so that it can run as quickly as possible in each situation it encounters. Inside the LHC, usually there is a storage ring acting as accelerator that collide the bunches of particles repeatedly by storing the bunches in the collider throughout a certain amount of time. When shooting out the particles, the collider aims for a very high collision rate, or luminosity.