New progress of high current gasdynamic ion source (invited)
Skalyga, V., Izotov, I., Golubev, S., Sidorov, A., Razin, S., Vodopyanov, A., Tarvainen, O., Koivisto, H., & Kalvas, T. (2016). New progress of high current gasdynamic ion source (invited). Review of Scientific Instruments, 87(2), Article 02A716. https://doi.org/10.1063/1.4934213
Julkaistu sarjassa
Review of Scientific InstrumentsTekijät
Päivämäärä
2016Tekijänoikeudet
© 2015 AIP Publishing LLC. Published in this repository with the kind permission of the publisher.
The experimental and theoretical research carried out at the Institute of Applied Physics resulted in
development of a new type of electron cyclotron resonance ion sources (ECRISs)—the gasdynamic
ECRIS. The gasdynamic ECRIS features a confinement mechanism in a magnetic trap that is different
from Geller’s ECRIS confinement, i.e., the quasi-gasdynamic one similar to that in fusion mirror
traps. Experimental studies of gasdynamic ECRIS were performed at Simple Mirror Ion Source
(SMIS) 37 facility. The plasma was created by 37.5 and 75 GHz gyrotron radiation with power
up to 100 kW. High frequency microwaves allowed to create and sustain plasma with significant
density (up to 8 × 1013 cm−3
) and to maintain the main advantages of conventional ECRIS such
as high ionization degree and low ion energy. Reaching such high plasma density relies on the
fact that the critical density grows with the microwave frequency squared. High microwave power
provided the average electron energy on a level of 50-300 eV enough for efficient ionization even
at neutral gas pressure range of 10−4–10−3 mbar. Gasdynamic ECRIS has demonstrated a good
performance producing high current (100-300 mA) multi-charged ion beams with moderate average
charge (Z = 4-5 for argon). Gasdynamic ECRIS has appeared to be especially effective in low
emittance hydrogen and deuterium beams formation. Proton beams with current up to 500 emA and
RMS emittance below 0.07 π·mm·mrad have been demonstrated in recent experiments.
...
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American Institute of PhysicsISSN Hae Julkaisufoorumista
0034-6748Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/25287927
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High yield neutron generator based on a high-current gasdynamic electron cyclotron resonance ion source
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Ropponen, Tommi (University of Jyväskylä, 2010)This thesis is a study of Electron Cyclotron Resonance Ion Source (ECRIS) plasmas and their properties. The focus has been on time evolution studies of bremsstrahlung emission, ion beam current production and numerical ... -
Periodic Beam Current Oscillations Driven by Electron Cyclotron Instabilities in ECRIS Plasmas
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