Photon-Induced Physics with Heavy-Ion Beams in ALICE
نویسنده
چکیده
Photon-induced interactions have traditionally been studied with lepton beams in fixed target experiments and at colliders. But two–photon and photon–hadron interactions can occur also when the lepton beams are replaced by high energy protons or heavy ions[1,2]. The electromagnetic interactions can be studied in ultra-peripheral collisions where the impact parameters are larger than the sum of the projectile radii and no hadronic interactions occur. This paper will discuss the possibilities for studying ultra-peripheral collisions in the ALICE experiment.
منابع مشابه
Effective Point of Measurement in Cylindrical Ion Chamber for Megavoltage Photon Beams
Introduction For dose measurement in Megavoltage (MV) photon beams with ion chambers, the effect of volume occupied by the air cavity is not negligible. Therefore, the result of measurement should be corrected with a displacement perturbation correction factor (Pdis) or using an effective point of measurement (EPOM). The aim of this study is to calculate the EPOM for cylindrical ion chamber and...
متن کاملInvestigation of surface and buildup region doses for 6 MV high energy photon beams in the presence of a thermoplastic mask
Background: The accuracy and the reproducibility of radiotherapy can be provided by using immobilization devices such as thermoplastic masks. In head and neck cancer radiotherapy, the patients are mostly immobilized by using thermoplastic masks. In this study, the effect of the thermoplastic mask to the surface and buildup region doses was investigated by using Markus parallel plate ion chamber...
متن کاملThe Muon Spectrometer of the ALICE experiment
Heavy ion collisions at relativistic energies are a unique tool for creating very hot and dense matter in a laboratory. In particular, lattice chromodynamics (lQCD) predicts a cross-over toward a new state of matter called Quark Gluon Plasma (QGP) at T∼ 170 MeV for μB ∼ 0. (where T is the temperature and μB the baryonic chemical potential) [ 1]. Heavy ion collisions allow us to experimentally s...
متن کاملHeavy ion Physics with ALICE
ALICE will study the physics of the strongly interacting matter produced in nucleus-nucleus collisions at the LHC where the formation of the Quark Gluon Plasma is expected. The experimental setup, the capabilities of the detector, and a few selected heavy-ion topics will be presented and discussed. Quantum Chromodynamics (QCD) predicts a transition from a stable state of matter formed by hadron...
متن کاملMedical physics aspects of particle therapy.
Charged particle beams offer an improved dose conformation to the target volume when compared with photon radiotherapy, with better sparing of normal tissue structures close to the target. In addition, beams of heavier ions exhibit a strong increase of the linear energy transfer in the Bragg peak when compared with the entrance region. These physical and biological properties make ion beams mor...
متن کامل