'Ion motion' diaporamas de présentation

Effects Limiting High-Gradient Operation of Metallic Accelerating Structures

Effects Limiting High-Gradient Operation of Metallic Accelerating Structures. G. S. Nusinovich , D. G. Kashyn , A. C. Keser , O. V. Sinitsyn, T. M. Antonsen, Jr., and K. Jensen (NRL). US High Gradient Research Collaboration Workshop, February 9-10, 2011, SLAC, Menlo Park, CA.

422 views • 30 slides

Proposed injection of polarized He3+ ions into EBIS trap with slanted electrostatic mirror*

Proposed injection of polarized He3+ ions into EBIS trap with slanted electrostatic mirror*. Pikin, A. Zelenski, A. Kponou, J. Alessi, E. Beebe, K. Prelec, D. Raparia Brookhaven National Laboratory. *Work supported under the auspices of the U.S. Department of Energy.

407 views • 27 slides

C. Benedetti, T.J. Mehrling, C.B. Schroeder, C.G.R. Geddes, and E. Esarey BELLA Center, LBNL

Ion motion and hosing suppression in plasma-based accelerators. C. Benedetti, T.J. Mehrling, C.B. Schroeder, C.G.R. Geddes, and E. Esarey BELLA Center, LBNL. EAAC 2019, Isola d'Elba (Italy) September 15-21, 2019 Work supported by Office of Science, US DOE, Contract No. DE-AC02-05CH11231.

395 views • 24 slides

What are helicons?

What are helicons?. Helicons are partially ionized RF discharges in a magnetic field. They are basically whistler modes confined to a cylinder. They are much different than in free space; they have E-fields. OLD. NEW. Long cylinder. Permanent magnet. Helicons pose unending problems.

289 views • 22 slides

What are helicons?

What are helicons?. Helicons are partially ionized RF discharges in a magnetic field. They are basically whistler modes confined to a cylinder. They are much different than in free space; they have E-fields. OLD. NEW. Long cylinder. Permanent magnet. Helicons pose unending problems.

285 views • 22 slides

DB long transfer line - a first pass -

315 views • 18 slides

Density Functional Theory for Electrons in Materials Richard M. Martin

Density Functional Theory for Electrons in Materials Richard M. Martin. Prediction of Phase Diagram of Carbon at High P,T. Bands in GaAs. Outline. Pseudopotentials Ab Initio -- Empirical Bloch theorem and bands in crystals

313 views • 17 slides

Ion Back-Bombardment in RF Guns

Ion Back-Bombardment in RF Guns. Eduard Pozdeyev BNL with contributions from D. Kayran, V. Litvinenko, I. Ben-Zvi. RF Photoguns with NEA Cathode. NEA GaAs photocahtodes: High QE (unpolarized) Polarization (lower QE) RF Photoguns: Good beam quality at high charge/bunch

290 views • 16 slides

Point Paul trap : Fiber integration and height variation

320 views • 13 slides

WITCH: Physics goals and Present Status

235 views • 13 slides

Quantum Theory of Solids

Quantum Theory of Solids. Mervyn Roy (S6 ) www2.le.ac.uk/departments/physics/people/mervynroy. Course Outline. Introduction and background The many-electron wavefunction - Introduction to quantum chemistry ( Hartree , HF, and CI methods) Introduction to density functional theory (DFT)

285 views • 13 slides

Electron Beam Oscillations Excited by Trapped Ions

Electron Beam Oscillations Excited by Trapped Ions. Undisturbed vertical electron motion. Ion oscillation in the beam field. Vertical electron motion disturbed by the ion motion.

110 views • 4 slides