Experimental Studies of Electron and Gas Sources in a Heavy-ion Beam
نویسندگان
چکیده
We use the High Current Experiment (HCX) to study three mitigation measures: a rough surface to reduce electron emission and gas desorption from ions striking walls near grazing incidence, a suppressor electrode after the magnets to block beam-induced electrons off the end structures from drifting upstream, and clearing electrodes to remove electrons from drift regions between magnets. We find that each technique performs as intended.
منابع مشابه
Initial Experimental Studies of Electron Accumulation in a Heavy-ion Beam*
Accelerators for heavy-ion inertial fusion energy (HIF) have an economic incentive to fit beam tubes tightly to beams, putting them at risk from electron clouds produced by emission of electrons and gas from walls. Theory and PIC simulations suggest that the electrons will be radially trapped in the ≥1 kV ion-beam potential. We are beginning studies on the High-Current Experiment (HCX) with uni...
متن کاملImpact of Various Beam Parameters on Lateral Scattering in Proton and Carbon-ion Therapy
Background: In radiation therapy with ion beams, lateral distributions of absorbed dose in the tissue are important. Heavy ion therapy, such as carbon-ion therapy, is a novel technique of high-precision external radiotherapy which has advantages over proton therapy in terms of dose locality and biological effectiveness.Methods: In this study, we used Monte Carlo method-based Geant4 toolkit to s...
متن کاملElectron Cooling Possibilities for Hera
Electron Cooling of the hadron beam in HERA could be a way to upgrade the luminosity for electron-proton and electron-heavy ion collisions. Because of the necessary electron energy of 450 MeV for cooling protons and about 180 MeV for cooling heavy ions the conventional approach using electrostatic DC sources is not possible. Instead an electron storage ring could be used. For this ring there ar...
متن کاملA performance study of the conceptual implementation of the GEM-tracking detector in Monte Carlo simulation
PANDA experiment (antiProton ANnihilation at DArmstadt) is one of the key projects of the future FAIR facilities to investigate the reactions of antiprotons with protons and nuclear targets. experiment is designed to serve as a completely extraordinary physical potential due to exploiting the availability of cold and high-intensity beams of antiprotons. One of the significant parts of the ...
متن کاملLight emission from particle beam induced plasma: An overview
Experiments to study the light emission from plasma produced by particle beams are presented. Fundamental aspects in comparison with discharge plasma formation are discussed. It is shown that the formation of excimer molecules is an important process. This paper summarizes various studies of particle beam induced light emission and presents the first results of a direct comparison of light emis...
متن کامل