Abstract
The results of experimental studies of the current and charge balance in the diode unit of the ∈Cyrillic capital letter EpU-500 high-current pulsed electron accelerator (an accelerating voltage of 350-500 keV, a half-height pulse duration of 60 ns, and a total kinetic electron energy of 250 J/pulse) during generation of an electron beam are presented. Planar diodes with multipointed cathodes having diameters of 43-60 mm and manufactured from graphite, copper, and carbon felt were studied. It is shown that the electron-beam divergence in the anode-cathode gap caused by a distortion in the electric field at the periphery of the cathode is the main source of parasitic losses in planar diodes. The half-angle of divergence is 68° at small anode-cathode gaps and decreases to 60° with an increase in the gap. When the diode impedance is matched to the generator's output impedance (at a gap of 10-12 mm), the charge loss is within 12%.
| Original language | English |
|---|---|
| Pages (from-to) | 687-694 |
| Number of pages | 8 |
| Journal | Instruments and Experimental Techniques |
| Volume | 50 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 1 Sep 2007 |
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ASJC Scopus subject areas
- Engineering (miscellaneous)
- Instrumentation
Cite this
Losses in a pulsed electron beam during its formation and extraction from the diode chamber of an accelerator. / Pushkarev, A. I.; Novoselov, Yu N.; Sazonov, R. V.
In: Instruments and Experimental Techniques, Vol. 50, No. 5, 01.09.2007, p. 687-694.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Losses in a pulsed electron beam during its formation and extraction from the diode chamber of an accelerator
AU - Pushkarev, A. I.
AU - Novoselov, Yu N.
AU - Sazonov, R. V.
PY - 2007/9/1
Y1 - 2007/9/1
N2 - The results of experimental studies of the current and charge balance in the diode unit of the ∈Cyrillic capital letter EpU-500 high-current pulsed electron accelerator (an accelerating voltage of 350-500 keV, a half-height pulse duration of 60 ns, and a total kinetic electron energy of 250 J/pulse) during generation of an electron beam are presented. Planar diodes with multipointed cathodes having diameters of 43-60 mm and manufactured from graphite, copper, and carbon felt were studied. It is shown that the electron-beam divergence in the anode-cathode gap caused by a distortion in the electric field at the periphery of the cathode is the main source of parasitic losses in planar diodes. The half-angle of divergence is 68° at small anode-cathode gaps and decreases to 60° with an increase in the gap. When the diode impedance is matched to the generator's output impedance (at a gap of 10-12 mm), the charge loss is within 12%.
AB - The results of experimental studies of the current and charge balance in the diode unit of the ∈Cyrillic capital letter EpU-500 high-current pulsed electron accelerator (an accelerating voltage of 350-500 keV, a half-height pulse duration of 60 ns, and a total kinetic electron energy of 250 J/pulse) during generation of an electron beam are presented. Planar diodes with multipointed cathodes having diameters of 43-60 mm and manufactured from graphite, copper, and carbon felt were studied. It is shown that the electron-beam divergence in the anode-cathode gap caused by a distortion in the electric field at the periphery of the cathode is the main source of parasitic losses in planar diodes. The half-angle of divergence is 68° at small anode-cathode gaps and decreases to 60° with an increase in the gap. When the diode impedance is matched to the generator's output impedance (at a gap of 10-12 mm), the charge loss is within 12%.
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U2 - 10.1134/S0020441207050089
DO - 10.1134/S0020441207050089
M3 - Article
VL - 50
SP - 687
EP - 694
JO - Instruments and Experimental Techniques
JF - Instruments and Experimental Techniques
SN - 0020-4412
IS - 5
ER -