1. S. V. Vasiliev, A. S. Kasaev, D. E. Berkaev, V. V. Balakin
XII International scientific workshop on problems of
charged particle accelerators in memory of professor V. P. Sarantsev
Alushta, 3-8 September 2017
Development kicker feeding high voltage squared pulses generator based on SOS-diodes for Injection Complex VEPP-5
S. V. Vasiliev, A. S. Kasaev,
D. E. Berkaev, V. V. Balakin
Budker Institute of Nuclear Physics
Russian Federation, , Novosibirsk, Lavrentev ave. 11

2. Injection Complex (IC) VEPP-5
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3. Injection\Extraction system of the IC VEPP-5
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4. Kickers of the IC VEPP-5 Plate length: 110 cm
Wave resistance of each plate: Ohm
Working aperture: horizontal cm; vertical cm
Kick direction: radial
Plate feeding scheme: paraphase
Field nonuniformity in working aperture ≤ ± 10 %
Kick rise/fall time ≤ 80 ns
Kick instability ≤ ± 1 %
Injection frequency 50 Hz
Extraction frequency < 2 Hz
Voltage on the kicker plates: ± 43 kV
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5. Scheme of the power pulse kicker’s supply
Energy storage - 2 double pulse forming network
Switches - tyratrones TGI1-2500\50
Quasi-traveling wave mode
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6. Main disadvantages Tyratrones: Difficult to access Expensiveness
Short life time
Time rise and time fall of the pulses reach the turns period of the beam in the ring, which is 92 ns
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7. Modernization’s direction of the Injection\Extraction system of the IC VEPP-5
The realization of a full-turnover extraction’s mode of a storaged beam
Liquidation of the generator’s scheme disadvantages
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8. Operational principle of a SOS-diode
tp = 50 ns
Jmax = 10 kA\sm2
Umax = 1 MV
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9. Kicker feeding high voltage squared pulses generator based on SOS-diodes
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10. Results of the simulation
t+ = 388 ns
t- = 135 ns
Icmax = -4 kA
Uload_max = 50 kV
tp = 89.4 ns
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11. High-voltage generator for inflectors of the Nestor
t+ = 480 ns
t- = 200 ns
Uload_max = kV
tp = 50 ns
t1-9 = 20 ns
Tyratrones – TPI1-1k35
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12. Summary In the process of this work was carried out:
simulation generator of high-voltage squared pulses of nanosecond duration, based on the use of a transmission lines as an intermediate inductive energy storage and an SOS-diode as a current breaker;
development kicker feeding high voltage squared pulses generator based on SOS-diodes for Injection Complex VEPP-5;
the assembly of the generator was started
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13. Thank you for your attention!