RuPAC2016 - List of Keywords (cathode)

Paper	Title	Other Keywords	Page
TUCAMH02	CW 100 mA Electron RF Gun for Novosibirsk ERL FEL	gun, cavity, radiation, electron	24
	V. Volkov, V.S. Arbuzov, E. Kenzhebulatov, E.I. Kolobanov, A.A. Kondakov, E.V. Kozyrev, S.A. Krutikhin, I.V. Kuptsov, G.Y. Kurkin, S.V. Motygin, A.A. Murasev, V.K. Ovchar, V.M. Petrov, A.M. Pilan, A.V. Repkov, M.A. Scheglov, I.K. Sedlyarov, S.S. Serednyakov, O.A. Shevchenko, S.V. Tararyshkin, A.G. Tribendis, N.A. Vinokurov BINP SB RAS, Novosibirsk, Russia N.A. Vinokurov NSU, Novosibirsk, Russia
	Funding: Grant 14-50-00080 of the Russian Science Foundation Continuous wave (CW) 100 mA electron RF gun for injecting the high-quality 300-400 keV electron beam in Novosibirsk microtron recuperator (ERL) and driving Free Electron Laser (FEL) was developed, built, and commissioned at BINP SB RAS. The RF gun consists of normal conducting 90 MHz RF cavity with a gridded thermionic cathode unit. Bench tests of rf gun is confirmed good results in strict accordance with the calculations. The gun was tested up to the design specifications at a test bench that includes a diagnostics beam line. The rf gun stand testing showed reliable work, unpretentious for vacuum conditions and stable in long-term operation. The design features of different components of the gun are presented. Preparation and commissioning experience is discussed. The beam test results are summarized.
	Slides TUCAMH02 [2.764 MB]
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TUPSA037	Powerfull RF Triode as Anode Modulator Vacuum Tube	vacuum, operation, impedance, DTL	294
	A.I. Kvasha, V.L. Serov RAS/INR, Moscow, Russia
	For 20 years modulator vacuum tube GMI-44A successfully operated in DTL RF system of INR Linac. The vacuum tube had been designed and manufactured at OKB "Swetlana" in the 70s-80s of the last century. The quantity of manufactured tubes - about 80, had allowed the accelerator operating till now. Manufacture of the tubes was stopped In the mid 80s. Attempts of the GMI-44A manufacture restoration or repair were unsuccessful ones. As it turned out, the only decision in the circumstances was using of 200 MHz powerful pulse triode GI-71A as modulator tube. The vacuum tubes GI-71A were installed for the last ten years in all output RF power amplifiers (PA) of INR Linac instead of RF pulse triode GI-54A. In the paper some problems appearing after modulator vacuum tube replacement are discussed.
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TUPSA062	Modeling of Triode Source of Intense Radial Converging Electron Beam	electron, target, plasma, simulation	336
	V.V. Altsybeyev, V.I. Engelko, A.D. Ovsyannikov, D.A. Ovsyannikov, V.A. Ponomarev Saint Petersburg State University, Saint Petersburg, Russia R. Fetzer, G. Müller KIT, Karlsruhe, Germany
	The considered source of triode type produces intense radial converging electron beam for irradiation of cylindrical targets. As an electron emitter an explosive plasma cathode is used. The role of initial transverse velocities of electrons, defocusing effect of the controlling grid, the beam self-magnetic field, electron and ion emission from the controlling grid, backscattering of electrons and ion flow from the target is analyzed. Conditions for achieving required electron beam parameters (the electron kinetic energy - 120 keV, the beam energy density on the target 40 J/cm² on a maximum possible length of the target surface) were determined.
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TUPSA063	The Electron Trajectories Construction in the System With a "Real" Geometry of the Field Cathode	electron, controls, synchrotron, neutron	339
	A.Yu. Antonov St. Petersburg State University, St. Petersburg, Russia M.I. Varajun LETI, Saint-Petersburg, Russia
	The problems of the trajectories constructing for field electrons and emission images simulation are considered. As an approximation of the emitter shape an explicitly and implicitly defined surfaces are selected. Hyperboloidal, ellipsoidal and paraboloidal models are studied. Also an equipotential surface of the charged sphere-on-orthogonal-cone system is used. A simple solution of the field distribution problem is allowed to formulate the Cauchy problem for the motion equations. The shape of the anode (the projector microscope screen) can be selected in any desired form. Achieving a screen by electrons is performed with dense output technique in numerical approach to the solution. The distribution of the work function on the cathode surface is obtained. The trajectories for the projection of the field emission activity as the image are used.
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TUPSA064	The Infinitely Thin Field Emitter Mathematical Modeling	electron, vacuum, electronics	342
	E.M. Vinogradova Saint-Petersburg State University, Saint-Petersburg, Russia N.V. Egorov St. Petersburg State University, St. Petersburg, Russia E.V. Kalaturskaja Saint Petersburg State University, Saint Petersburg, Russia
	In this work an axisymmetric diode electron-optical system based on a field emitter is simulated. The field emitter in the form of a thin filament of finite length is located on the flat substrate with the dielectric layer. The anode is a plane. The electrostatic potential distribution was found in an analytical form - in the form of Fourier-Bessel series in the whole area of the system under investigation. The coefficients of Fourier-Bessel series are the solution of the system of linear equations with constant coefficients.
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TUPSA068	Simulation of S-Band RF Gun with RF Beam Control	cavity, gun, controls, electron	345
	A.M. Barnyakov, A.E. Levichev, D.A. Nikiforov BINP SB RAS, Novosibirsk, Russia M.V. Maltseva NSU, Novosibirsk, Russia
	The design and operation of electron RF gun with RF beam control are described. Results of numerical simulation of electromagnetic fields and beam dynamics are presented. RF gun consists of two resonators operating at E010 mode with 180 degrees phase shift at frequency of 2856 MHz. RF control is carried out via coaxial resonator with grid-cathode capacity. Accordint to result of the simulation, RF gun with RF control allows producing electron bunches with duration of 50 ps, energy of about 3 MeV and the energy spread of about 5%.
	Poster TUPSA068 [0.996 MB]
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WEPSB009	The Behavior of Powerful Relativistic Electron Beam With Elliptical Cross-Section in Longitudinal Magnetic Field	emittance, electron, quadrupole	373
	A.S. Chikhachev Allrussian Electrotechnical Institute, Moskow, Russia H.Y. Barminova MEPhI, Moscow, Russia
	The behavior of relativistic intense electron beam with elliptical cross-section moving in a longitudinal magnetic field is investigated with the help of self-consistent model. The solutions for the beam envelopes are obtained in the case of the beam current differed from Alfven limit and the beam charge neutralized. The conditions of stationary beam propagation are determined, however it is discovered that for the case of non-zero self-consistent magnetic field the stationary beam propagation is violated, the partial emittance oscillations being observed. The found time- dependence of the partial emittances and the beam envelopes illustrates the effect of emittance transfer caused by the coupled particle motion in magnetic field.
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WEPSB040	Commissioning of the 60 keV Electron Cooler for the NICA Booster	electron, vacuum, ion, booster	452
	A.V. Bubley, M.I. Bryzgunov, A.P. Denisov, A.D. Goncharov, V.M. Panasyuk, V.V. Parkhomchuk, V.B. Reva BINP SB RAS, Novosibirsk, Russia
	The 60 keV electron cooler for the NICA booster was designed and constructed at BINP SB RAS. The article describes results of various measurements obtained during its commissioning. Also some details of design and construction of the cooler are discussed.
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WEPSB074	High Current Pulsing Deuteron Accelerator with Energy of 500 keV	laser, neutron, plasma, experiment	527
	A.A. Isaev, K.I. Kozlovskiy, A.E. Shikanov, E.D. Vovchenko MEPhI, Moscow, Russia
	It is reported on the development of a compact experimental model of the deuteron accelerator with energies up to 400 KeV. The ion current is about 1 kA and the current density is greater than 20 A/cm² in pulses with a duration of 0.5 mks and a repetition rate of 1 Hz. In this accelerator, we applied the effective ion source of laser-plasma and the optimized method of magnetic insulation of the electrons in the accelerating gap.
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THPSC001	The Multipole Lens Mathematical Modeling	multipole, electron, vacuum, controls	535
	E.M. Vinogradova Saint-Petersburg State University, Saint-Petersburg, Russia A.V. Starikova Saint Petersburg State University, Saint Petersburg, Russia
	In the present work the mathematical model of the multipole system is presented. The multipole system is composed of arbitrary even number of the uniform electrodes. Each of the electrodes is a part of the plane. The potentials of the electrodes are the same modulus and opposite sign for neighboring electrodes. The variable separation method is used to solve the electrostatic problem. The potential distribution is represented as the eigen functions expansions. The boundary conditions and the normal derivative continuity conditions lead to the linear algebraic equations system relative to the series coefficients.
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THPSC018	Achievement of Necessary Vacuum Conditions in the NICA Accelerator Complex	vacuum, booster, collider, ion	575
	A.V. Smirnov, A.M. Bazanov, A.V. Butenko, A.R. Galimov, H.G. Khodzhibagiyan, A. Nesterov, A.N. Svidetelev, A. Tikhomirov JINR, Dubna, Moscow Region, Russia
	NICA is a new accelerator collider complex under construction at the Joint Institute for Nuclear Research in Dubna. The facility is aimed at providing collider experiments with heavy ions up to Gold in a center of mass energy range from 4 to 11 GeV/u and an average luminosity up to 10²⁷ cm^-2 s^-1. The collisions of polarized deuterons are also foreseen. The facility includes two injector chains, a new superconducting booster synchrotron, the existing superconducting synchrotron Nuclotron, and a new superconducting collider consisting of two rings, each of about 500 m in circumference. Vacuum volumes of the accelerator booster and Nuclotron and the superconducting collider are divided into volumes of superconducting elements thermal enclosure and beam chambers. The beam chambers consist regular cold periods, which are at a temperature of 4.2K to 80K, and warm irregular gaps at room temperature. Operating pressure in the thermal enclosure vacuum volumes have to maintained in the range of 10^-7 to 10^-4 mbar, in the beam chamber cold and warm areas - not more than 2·10^-11 mbar. The requirements for materials, surface preparation conditions and the level of leakage in the vacuum volume are set out. The description of way to achievement and maintenance of the working vacuum in the NICA project are presented.
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THPSC025	Generator of High-Voltage Pulse for High-Current Accelerator of Deuteron With Laser Starts	laser, plasma, high-voltage, electron	594
	E.D. Vovchenko, A.A. Isaev, K.I. Kozlovskiy, A.E. Shikanov MEPhI, Moscow, Russia
	The report deals with the source of pulsed high voltage, and simultaneously, source of the pulsed current for the magnetic insulation of electrons near the cathode that was developed for a high-current accelerator of deuterons with laser-plasma anode. The accelerating voltage up to 400 kV and ion current about 1 kA have been achieved. The current in the spiral inductor has reached 4 kA and it excludes breakdown between the cathode and anode for 0.5 mks. For synchronization of physical processes in accelerator of deuterons with pulsed power, the laser control is applied.
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THPSC072	Digital-to-Analog Beam Energy and Current Stabilization of ELV Accelerators	controls, electron, feedback, software	700
	D.S. Vorobev, E.V. Domarov, S. Fadeev, N.K. Kuksanov, A. Lavrukhin, P.I. Nemytov BINP SB RAS, Novosibirsk, Russia
	Funding: Budker Institute of Nuclear Physics, Novosibirsk, Russia. 1.Previous systems of energy and current stabilization are based on analog PID-controllers. They provide good stability at sufficient speed-work. 2.Increased requirements of technological lines to the speed of the accelerator injection to set-up parameters and introduction of technological lines, in which the accelerator is a slave device and should within the shortest possible time to respond onto the changes of operation input parameters, forced us to find the way of stabilization systems improvement. 3.New stabilization system is able to provide current output speed up to 5mA/sec, at required energy stability. 4.Digital-to-analog stabilization is produced as a superstructure on the existing system and is made as a source code added into the basic accelerator control program. This approach enables to modernize simply the existing accelerators. The code itself is two independent parts. The first part is the current beam corrector, which calculate the derivate (current speed) at a time and aims to hold it in set-up range, taking into account the difference of the tasks and the necessity of cathode warm up. The second part is a energy compensator. It adds the current derivate into accelerator energy channel, reducing the energy settlements at once. 5.Present system passed through the testing and it is already installed onto ELV-0.5(0.5MeV, 100mA) accelerator in Qingzhou (a/m tyre production) and onto ELV-8(2.5MeV, 40mA) accelerators in China for cable insulation treatment.
	Poster THPSC072 [3.958 MB]
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Paper

Title

Other Keywords

Page

TUCAMH02

CW 100 mA Electron RF Gun for Novosibirsk ERL FEL

gun, cavity, radiation, electron

24

V. Volkov, V.S. Arbuzov, E. Kenzhebulatov, E.I. Kolobanov, A.A. Kondakov, E.V. Kozyrev, S.A. Krutikhin, I.V. Kuptsov, G.Y. Kurkin, S.V. Motygin, A.A. Murasev, V.K. Ovchar, V.M. Petrov, A.M. Pilan, A.V. Repkov, M.A. Scheglov, I.K. Sedlyarov, S.S. Serednyakov, O.A. Shevchenko, S.V. Tararyshkin, A.G. Tribendis, N.A. Vinokurov
BINP SB RAS, Novosibirsk, Russia
N.A. Vinokurov
NSU, Novosibirsk, Russia

Funding: Grant 14-50-00080 of the Russian Science Foundation
Continuous wave (CW) 100 mA electron RF gun for injecting the high-quality 300-400 keV electron beam in Novosibirsk microtron recuperator (ERL) and driving Free Electron Laser (FEL) was developed, built, and commissioned at BINP SB RAS. The RF gun consists of normal conducting 90 MHz RF cavity with a gridded thermionic cathode unit. Bench tests of rf gun is confirmed good results in strict accordance with the calculations. The gun was tested up to the design specifications at a test bench that includes a diagnostics beam line. The rf gun stand testing showed reliable work, unpretentious for vacuum conditions and stable in long-term operation. The design features of different components of the gun are presented. Preparation and commissioning experience is discussed. The beam test results are summarized.

Slides TUCAMH02 [2.764 MB]

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TUPSA037

Powerfull RF Triode as Anode Modulator Vacuum Tube

vacuum, operation, impedance, DTL

294

A.I. Kvasha, V.L. Serov
RAS/INR, Moscow, Russia

For 20 years modulator vacuum tube GMI-44A successfully operated in DTL RF system of INR Linac. The vacuum tube had been designed and manufactured at OKB "Swetlana" in the 70s-80s of the last century. The quantity of manufactured tubes - about 80, had allowed the accelerator operating till now. Manufacture of the tubes was stopped In the mid 80s. Attempts of the GMI-44A manufacture restoration or repair were unsuccessful ones. As it turned out, the only decision in the circumstances was using of 200 MHz powerful pulse triode GI-71A as modulator tube. The vacuum tubes GI-71A were installed for the last ten years in all output RF power amplifiers (PA) of INR Linac instead of RF pulse triode GI-54A. In the paper some problems appearing after modulator vacuum tube replacement are discussed.

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TUPSA062

Modeling of Triode Source of Intense Radial Converging Electron Beam

electron, target, plasma, simulation

336

V.V. Altsybeyev, V.I. Engelko, A.D. Ovsyannikov, D.A. Ovsyannikov, V.A. Ponomarev
Saint Petersburg State University, Saint Petersburg, Russia
R. Fetzer, G. Müller
KIT, Karlsruhe, Germany

The considered source of triode type produces intense radial converging electron beam for irradiation of cylindrical targets. As an electron emitter an explosive plasma cathode is used. The role of initial transverse velocities of electrons, defocusing effect of the controlling grid, the beam self-magnetic field, electron and ion emission from the controlling grid, backscattering of electrons and ion flow from the target is analyzed. Conditions for achieving required electron beam parameters (the electron kinetic energy - 120 keV, the beam energy density on the target 40 J/cm² on a maximum possible length of the target surface) were determined.

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TUPSA063

The Electron Trajectories Construction in the System With a "Real" Geometry of the Field Cathode

electron, controls, synchrotron, neutron

339

A.Yu. Antonov
St. Petersburg State University, St. Petersburg, Russia
M.I. Varajun
LETI, Saint-Petersburg, Russia

The problems of the trajectories constructing for field electrons and emission images simulation are considered. As an approximation of the emitter shape an explicitly and implicitly defined surfaces are selected. Hyperboloidal, ellipsoidal and paraboloidal models are studied. Also an equipotential surface of the charged sphere-on-orthogonal-cone system is used. A simple solution of the field distribution problem is allowed to formulate the Cauchy problem for the motion equations. The shape of the anode (the projector microscope screen) can be selected in any desired form. Achieving a screen by electrons is performed with dense output technique in numerical approach to the solution. The distribution of the work function on the cathode surface is obtained. The trajectories for the projection of the field emission activity as the image are used.

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TUPSA064

The Infinitely Thin Field Emitter Mathematical Modeling

electron, vacuum, electronics

342

E.M. Vinogradova
Saint-Petersburg State University, Saint-Petersburg, Russia
N.V. Egorov
St. Petersburg State University, St. Petersburg, Russia
E.V. Kalaturskaja
Saint Petersburg State University, Saint Petersburg, Russia

In this work an axisymmetric diode electron-optical system based on a field emitter is simulated. The field emitter in the form of a thin filament of finite length is located on the flat substrate with the dielectric layer. The anode is a plane. The electrostatic potential distribution was found in an analytical form - in the form of Fourier-Bessel series in the whole area of the system under investigation. The coefficients of Fourier-Bessel series are the solution of the system of linear equations with constant coefficients.

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TUPSA068

Simulation of S-Band RF Gun with RF Beam Control

cavity, gun, controls, electron

345

A.M. Barnyakov, A.E. Levichev, D.A. Nikiforov
BINP SB RAS, Novosibirsk, Russia
M.V. Maltseva
NSU, Novosibirsk, Russia

The design and operation of electron RF gun with RF beam control are described. Results of numerical simulation of electromagnetic fields and beam dynamics are presented. RF gun consists of two resonators operating at E010 mode with 180 degrees phase shift at frequency of 2856 MHz. RF control is carried out via coaxial resonator with grid-cathode capacity. Accordint to result of the simulation, RF gun with RF control allows producing electron bunches with duration of 50 ps, energy of about 3 MeV and the energy spread of about 5%.

Poster TUPSA068 [0.996 MB]

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WEPSB009

The Behavior of Powerful Relativistic Electron Beam With Elliptical Cross-Section in Longitudinal Magnetic Field

emittance, electron, quadrupole

373

A.S. Chikhachev
Allrussian Electrotechnical Institute, Moskow, Russia
H.Y. Barminova
MEPhI, Moscow, Russia

The behavior of relativistic intense electron beam with elliptical cross-section moving in a longitudinal magnetic field is investigated with the help of self-consistent model. The solutions for the beam envelopes are obtained in the case of the beam current differed from Alfven limit and the beam charge neutralized. The conditions of stationary beam propagation are determined, however it is discovered that for the case of non-zero self-consistent magnetic field the stationary beam propagation is violated, the partial emittance oscillations being observed. The found time- dependence of the partial emittances and the beam envelopes illustrates the effect of emittance transfer caused by the coupled particle motion in magnetic field.

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WEPSB040

Commissioning of the 60 keV Electron Cooler for the NICA Booster

electron, vacuum, ion, booster

452

A.V. Bubley, M.I. Bryzgunov, A.P. Denisov, A.D. Goncharov, V.M. Panasyuk, V.V. Parkhomchuk, V.B. Reva
BINP SB RAS, Novosibirsk, Russia

The 60 keV electron cooler for the NICA booster was designed and constructed at BINP SB RAS. The article describes results of various measurements obtained during its commissioning. Also some details of design and construction of the cooler are discussed.

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WEPSB074

High Current Pulsing Deuteron Accelerator with Energy of 500 keV

laser, neutron, plasma, experiment

527

A.A. Isaev, K.I. Kozlovskiy, A.E. Shikanov, E.D. Vovchenko
MEPhI, Moscow, Russia

It is reported on the development of a compact experimental model of the deuteron accelerator with energies up to 400 KeV. The ion current is about 1 kA and the current density is greater than 20 A/cm² in pulses with a duration of 0.5 mks and a repetition rate of 1 Hz. In this accelerator, we applied the effective ion source of laser-plasma and the optimized method of magnetic insulation of the electrons in the accelerating gap.

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THPSC001

The Multipole Lens Mathematical Modeling

multipole, electron, vacuum, controls

535

E.M. Vinogradova
Saint-Petersburg State University, Saint-Petersburg, Russia
A.V. Starikova
Saint Petersburg State University, Saint Petersburg, Russia

In the present work the mathematical model of the multipole system is presented. The multipole system is composed of arbitrary even number of the uniform electrodes. Each of the electrodes is a part of the plane. The potentials of the electrodes are the same modulus and opposite sign for neighboring electrodes. The variable separation method is used to solve the electrostatic problem. The potential distribution is represented as the eigen functions expansions. The boundary conditions and the normal derivative continuity conditions lead to the linear algebraic equations system relative to the series coefficients.

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THPSC018

Achievement of Necessary Vacuum Conditions in the NICA Accelerator Complex

vacuum, booster, collider, ion

575

A.V. Smirnov, A.M. Bazanov, A.V. Butenko, A.R. Galimov, H.G. Khodzhibagiyan, A. Nesterov, A.N. Svidetelev, A. Tikhomirov
JINR, Dubna, Moscow Region, Russia

NICA is a new accelerator collider complex under construction at the Joint Institute for Nuclear Research in Dubna. The facility is aimed at providing collider experiments with heavy ions up to Gold in a center of mass energy range from 4 to 11 GeV/u and an average luminosity up to 10²⁷ cm^-2 s^-1. The collisions of polarized deuterons are also foreseen. The facility includes two injector chains, a new superconducting booster synchrotron, the existing superconducting synchrotron Nuclotron, and a new superconducting collider consisting of two rings, each of about 500 m in circumference. Vacuum volumes of the accelerator booster and Nuclotron and the superconducting collider are divided into volumes of superconducting elements thermal enclosure and beam chambers. The beam chambers consist regular cold periods, which are at a temperature of 4.2K to 80K, and warm irregular gaps at room temperature. Operating pressure in the thermal enclosure vacuum volumes have to maintained in the range of 10^-7 to 10^-4 mbar, in the beam chamber cold and warm areas - not more than 2·10^-11 mbar. The requirements for materials, surface preparation conditions and the level of leakage in the vacuum volume are set out. The description of way to achievement and maintenance of the working vacuum in the NICA project are presented.

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THPSC025

Generator of High-Voltage Pulse for High-Current Accelerator of Deuteron With Laser Starts

laser, plasma, high-voltage, electron

594

E.D. Vovchenko, A.A. Isaev, K.I. Kozlovskiy, A.E. Shikanov
MEPhI, Moscow, Russia

The report deals with the source of pulsed high voltage, and simultaneously, source of the pulsed current for the magnetic insulation of electrons near the cathode that was developed for a high-current accelerator of deuterons with laser-plasma anode. The accelerating voltage up to 400 kV and ion current about 1 kA have been achieved. The current in the spiral inductor has reached 4 kA and it excludes breakdown between the cathode and anode for 0.5 mks. For synchronization of physical processes in accelerator of deuterons with pulsed power, the laser control is applied.

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPSC072

Digital-to-Analog Beam Energy and Current Stabilization of ELV Accelerators

controls, electron, feedback, software

700

D.S. Vorobev, E.V. Domarov, S. Fadeev, N.K. Kuksanov, A. Lavrukhin, P.I. Nemytov
BINP SB RAS, Novosibirsk, Russia

Funding: Budker Institute of Nuclear Physics, Novosibirsk, Russia.
1.Previous systems of energy and current stabilization are based on analog PID-controllers. They provide good stability at sufficient speed-work. 2.Increased requirements of technological lines to the speed of the accelerator injection to set-up parameters and introduction of technological lines, in which the accelerator is a slave device and should within the shortest possible time to respond onto the changes of operation input parameters, forced us to find the way of stabilization systems improvement. 3.New stabilization system is able to provide current output speed up to 5mA/sec, at required energy stability. 4.Digital-to-analog stabilization is produced as a superstructure on the existing system and is made as a source code added into the basic accelerator control program. This approach enables to modernize simply the existing accelerators. The code itself is two independent parts. The first part is the current beam corrector, which calculate the derivate (current speed) at a time and aims to hold it in set-up range, taking into account the difference of the tasks and the necessity of cathode warm up. The second part is a energy compensator. It adds the current derivate into accelerator energy channel, reducing the energy settlements at once. 5.Present system passed through the testing and it is already installed onto ELV-0.5(0.5MeV, 100mA) accelerator in Qingzhou (a/m tyre production) and onto ELV-8(2.5MeV, 40mA) accelerators in China for cable insulation treatment.

Poster THPSC072 [3.958 MB]

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