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17th International Conference on Ion Sources

15–20 Oct 2017
CERN
Europe/Zurich timezone

Session

4th Session

Tue01
17 Oct 2017, 08:30
CERN

CERN

Centre international de Conférence Genève (CICG). http://www.cicg.ch/

Conveners

4th Session: Tuesday AM1

  • Ursel Fantz (MAx-Planck-Institut fuer Plasmaphysik)

Presentation materials

There are no materials yet.

  1. 54. Plasma-Surface Interaction in Negative Hydrogen Ion Sources
    Prof. Motoi Wada (Doshisha University)
    17/10/2017, 08:30
    Fundamental processes
    Oral presentaion

    Fundamental data are indispensable to set up a numerical simulation model to predict the amount of current extracted from an ion source. Surface recombination process plays a decisive role for determining the proton ratio in hydrogen plasma ion species, and the data on recombination coefficients have been accumulated for elements used for ion source wall materials [1]. The surface conditions...

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  2. 255. Flow Patterns of H$^-$ Ions Measured with Directional Photodetachment Langmuir Probe
    Dr Katsuyoshi Tsumori (National Institute for Fusion Science, The Graduate University for Advanced Studies)
    17/10/2017, 09:00
    Fundamental processes
    Oral presentaion

    Tiny amounts of caesium (Cs) injection into negative ion sources enhances the density of hydrogen/deuterium negative ions (H$^-$/ D$^-$ ions) drastically. Sequential processes through the production to extraction of negative ion is essential to understand the negative-ion dynamics from physics point of view and to improve the performance of negative ion source from engineering point of view. ...

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  3. 214. Plasma Diagnostics Update and Consequences on the Upgrade of Existing Sources
    Giuseppe Castro
    17/10/2017, 09:30
    Fundamental processes
    Oral presentaion

    The development and upgrade of ion sources for accelerators depends more and more on the optimization of the microwave-to-plasma coupling. Proton sources require to optimize the electron energy distribution function (EEDF) in the range of a few tens of eV. Multicharged ions sources require the optimization of EEDF in the keV scale depending on the needed charge state. The energy tail of EEDF...

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  4. 188. Photoelectron Emission Induced by Low Temperature Hydrogen Plasmas
    Janne Laulainen (University of Jyväskylä, Department of Physics)
    17/10/2017, 09:50
    Fundamental processes
    Oral presentaion

    Low temperature hydrogen plasmas of positive (H$^{+}$, H$^{2+}$, D$^{+}$) and negative (H$^{-}$, D$^{-}$) ion sources are strong sources of vacuum ultraviolet (VUV) radiation. Theoretical calculations based on fundamental conservation laws and reaction cross sections show that at least $10$ % of the applied plasma heating power is dissipated via photon emission. The theoretical result is...

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  5. 107. 45 GHz Microwave Power Transmission and Coupling Scheme Study with Superconducting ECR Ion Source at IMP
    Mr Junwei Guo (Institute of Modern Physics, Chinese Academy of Sciences)
    17/10/2017, 10:10
    Applications and related technologies
    Oral presentaion

    A versatile platform for basic researches LEAF or Low Energy Accelerator Facility has been launched at IMP. In order to meet the beam intensity requirements of highly charged heavy ions, a 45 GHz superconducting ECR ion source FECR (a Fourth generation ECR ion source) is under intense R&D at IMP. Therefore, we introduced a 45 GHz gyrotron system which is capable of providing output power up to...

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  6. 366. Announcement
    17/10/2017, 10:30
Building timetable...