Transport and acceleration of the high-current ion beam in magneto-isolated gap
The possibility of transportation and acceleration of the high-current ion beam in the magneto-isolated gap has been demonstrated. Found the parameters of the system and beams (the magnetic field produced by the coils with opposing currents, the size of the system, and the parameters of the beams),...
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| Cite this: | Transport and acceleration of the high-current ion beam in magneto-isolated gap / V.I. Karas, E.A. Kornilov, O.V. Manuilenko, V.P. Tarakanov, O.V. Fedorovskaya // Вопросы атомной науки и техники. — 2015. — № 4. — С. 129-134. — Бібліогр.: 10 назв. — англ. |
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nasplib_isofts_kiev_ua-123456789-1121442025-02-09T23:34:38Z Transport and acceleration of the high-current ion beam in magneto-isolated gap Транспортування та прискорення потужнострумового іонного пучка в магнітоізольованому проміжку Транспортировка и ускорение сильноточного ионного пучка в магнитоизолированном промежутке Karas, V.I. Kornilov, E.A. Manuilenko, O.V. Tarakanov, V.P. Fedorovskaya, O.V. Термоядерный синтез (коллективные процессы) The possibility of transportation and acceleration of the high-current ion beam in the magneto-isolated gap has been demonstrated. Found the parameters of the system and beams (the magnetic field produced by the coils with opposing currents, the size of the system, and the parameters of the beams), under which the uniform acceleration of the high-current ion beam all along the gap length is realized. It is shown that the quality of the ion beam, during transport and acceleration, at the exit of the gap is acceptable for many technological applications. Продемонстровано можливість транспортування та прискорення потужнострумового іонного пучка в магнітоізольованому проміжку. Знайдено параметри системи та пучків (величина магнітного поля, яке створено котушками із зустрічними струмами, розміри системи, параметри пучків), при яких здійснюється рівномірне прискорення по довжині проміжку. Показано, що якість іонного пучка при його транспортуванні та прискоренні на виході з проміжку залишається прийнятною для багатьох технологічних застосувань. Продемонстрирована возможность транспортировки и ускорения сильноточного ионного пучка в магнитоизолированном промежутке. Найдены параметры системы и пучков (величина магнитного поля, созданного катушками со встречными токами, размеры системы, параметры пучков), при которых осуществляется равномерное ускорение по длине промежутка. Показано, что качество ионного пучка при его транспортировке и ускорении на выходе из промежутка остается приемлемым для многих технологических применений. 2015 Article Transport and acceleration of the high-current ion beam in magneto-isolated gap / V.I. Karas, E.A. Kornilov, O.V. Manuilenko, V.P. Tarakanov, O.V. Fedorovskaya // Вопросы атомной науки и техники. — 2015. — № 4. — С. 129-134. — Бібліогр.: 10 назв. — англ. 1562-6016 PACS: 41.75.-i, 52.40.Mj, 52.58.Hm, 52.59.-f, 52.65.Rr https://nasplib.isofts.kiev.ua/handle/123456789/112144 en Вопросы атомной науки и техники application/pdf Національний науковий центр «Харківський фізико-технічний інститут» НАН України |
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Термоядерный синтез (коллективные процессы) Термоядерный синтез (коллективные процессы) |
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Термоядерный синтез (коллективные процессы) Термоядерный синтез (коллективные процессы) Karas, V.I. Kornilov, E.A. Manuilenko, O.V. Tarakanov, V.P. Fedorovskaya, O.V. Transport and acceleration of the high-current ion beam in magneto-isolated gap Вопросы атомной науки и техники |
| description |
The possibility of transportation and acceleration of the high-current ion beam in the magneto-isolated gap has been demonstrated. Found the parameters of the system and beams (the magnetic field produced by the coils with opposing currents, the size of the system, and the parameters of the beams), under which the uniform acceleration of the high-current ion beam all along the gap length is realized. It is shown that the quality of the ion beam, during transport and acceleration, at the exit of the gap is acceptable for many technological applications. |
| format |
Article |
| author |
Karas, V.I. Kornilov, E.A. Manuilenko, O.V. Tarakanov, V.P. Fedorovskaya, O.V. |
| author_facet |
Karas, V.I. Kornilov, E.A. Manuilenko, O.V. Tarakanov, V.P. Fedorovskaya, O.V. |
| author_sort |
Karas, V.I. |
| title |
Transport and acceleration of the high-current ion beam in magneto-isolated gap |
| title_short |
Transport and acceleration of the high-current ion beam in magneto-isolated gap |
| title_full |
Transport and acceleration of the high-current ion beam in magneto-isolated gap |
| title_fullStr |
Transport and acceleration of the high-current ion beam in magneto-isolated gap |
| title_full_unstemmed |
Transport and acceleration of the high-current ion beam in magneto-isolated gap |
| title_sort |
transport and acceleration of the high-current ion beam in magneto-isolated gap |
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Національний науковий центр «Харківський фізико-технічний інститут» НАН України |
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2015 |
| topic_facet |
Термоядерный синтез (коллективные процессы) |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/112144 |
| citation_txt |
Transport and acceleration of the high-current ion beam in magneto-isolated gap / V.I. Karas, E.A. Kornilov, O.V. Manuilenko, V.P. Tarakanov, O.V. Fedorovskaya // Вопросы атомной науки и техники. — 2015. — № 4. — С. 129-134. — Бібліогр.: 10 назв. — англ. |
| series |
Вопросы атомной науки и техники |
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| fulltext |
ISSN 1562-6016. ВАНТ. 2015. №4(98) 129
THERMONUCLEAR FUSION (COLLECTIVE PROCESSES)
TRANSPORT AND ACCELERATION
OF THE HIGH-CURRENT ION BEAM IN MAGNETO-ISOLATED GAP
V.I. Karas’1,2, E.A. Kornilov1, O.V. Manuilenko1, V.P. Tarakanov3,4, O.V. Fedorovskaya1
1National Science Center “Kharkov Institute of Physics and Technology”, Kharkov, Ukraine;
2V.N. Karazin Kharkiv National University, Kharkov, Ukraine;
3Joint Institute of High Temperatures of RAS, Moscow, Russian Federation;
4National Research Nuclear University MEPhI, Moscow, Russian Federation
E-mail: karas@kipt.kharkov.ua
The possibility of transportation and acceleration of the high-current ion beam in the magneto-isolated gap has
been demonstrated. Found the parameters of the system and beams (the magnetic field produced by the coils with
opposing currents, the size of the system, and the parameters of the beams), under which the uniform acceleration of
the high-current ion beam all along the gap length is realized. It is shown that the quality of the ion beam, during
transport and acceleration, at the exit of the gap is acceptable for many technological applications.
PACS: 41.75.-i, 52.40.Mj, 52.58.Hm, 52.59.-f, 52.65.Rr
INTRODUCTION
It is known that the high-current ion beams (HCIB)
in the linear induction accelerator (LIA) can be obtained
for many important applications: for heavy-ion nuclear
fusion (HIF), for surface modification of various mate-
rials, in the radiation materials science.
The method of collective focusing of a high-current
tubular ion beam proposed at the National Science Cen-
ter “Kharkov Institute of Physics and Technology” [1,
2] allows constructing a compact accelerator that can be
used as: an efficient driver for HIF and also as device
for and other scientific research.
The space charge and current compensation of the
ion beam by an electron beam in the axisymmetric ac-
celerating gap was investigated in [3 - 6]. The accelera-
tion of a high-current compensated ion beam in two
cusps was studied in [5]. It is shown that the injection of
thermal electrons in the drift gaps provides charge com-
pensation of the ion beam, improving the quality of
HCIB acceleration.
In [7] the dynamics of particles in the drift gap of
LIA in the presence of an external magnetic field of
trapping configuration has been numerically studied.
The current compensation of the ion beam was per-
formed by the electron beam.
The dynamics of the ion beam transportation in the
external magnetic field in the drift gap of LIA with a
collective focusing is studied. The variants of charge
compensation of the HCIB in the drift gap are consid-
ered. It is shown that under chosen value and configura-
tion of the magnetic field, using a programmed injection
of additional electrons the HCIB quality can be kept
high enough.
It was found that the additional electrons available at
the initial time do not have a significant effect on the
HCIB compensation, since the basic compensation of
the ion beam is performed by the electron beam injected
simultaneously with the HCIB, due to the formation of a
virtual cathode. As a result, the fronts of the electron
beam and HCIB almost simultaneously come to the
right edge of the drift gap that contributes to its satisfac-
tory current and charge compensation.
To ensure the HCIB charge compensation after one
time of an ion flight the injection of the additional elec-
trons from right border of the drift gap is performed.
Found that the start time and duration of the injection of
additional electrons, as well as their speed have the im-
portant meaning for keeping of uniform HCIB compen-
sation.
It is shown that under the most appropriate variant of
the HCIB compensation ion beam current at the exit of
the drift gap is close to the original, and since the elec-
tron beam also retains its current, HCIB at the output of
the system is almost compensated by the current. This is
important for effective acceleration of the ion beam in
the accelerating gap that is after drift gap of LIA. In
additional the ion beam at the exit of drift gap is almost
monoenergetic and retains its transverse dimensions.
Found in [7] variant of the HCIB compensation allows
to maintain the quality of HCIB required for HIF, but
for reducing of the energy spread and the angular diver-
gence of the ion beam it is necessary further improve-
ment of the compensation method.
In this paper the transportation and acceleration of
HCIB in the magneto-isolated gap of LIA have been
studied. The possibility of using rough numerical simu-
lation parameters (large spatial step and a small number
of macroparticles, with retaining of the time step small
enough to accumulation of errors, related to the time
step, was minimal) for a preliminary study of particle
dynamics. Found parameters of the beams and the sys-
tem, under which transportation and acceleration of the
HCIB (with saving of its current, density, cross section
close to the original) are realized in the magneto-
isolated gap. It should be noted that the external mag-
netic field of cusp configuration in the magneto-
insulated gap is formed by coils with opposing currents.
Under such conditions, HCIB accelerates practically
uniformly (ion beam energy is increased by 2 MeV only
in the region where there is the accelerating electrical
field corresponding to an energy of 2 MeV), and the
electron beam is decelerated and loses 2 MeV. Wherein
the quality of the ion beam is sufficiently high: energy
spread, cross-section are retained at the exit of the mag-
neto-isolated gap.
mailto:karas@kipt.kharkov.ua
ISSN 1562-6016. ВАНТ. 2015. №4(98) 130
1. TRANSPORT AND ACCELERATION
OF THE HIGH-CURRENT ION BEAM
IN MAGNETO-ISOLATED GAP
1.1. NUMERICAL MODEL
For the numerical study of the beam dynamics of the
transport and acceleration a powerful 3-dimensional
code KARAT [8], which allows solving problems of such
class, is used. KARAT is fully electromagnetic code
based on PiC-method (Particle-in-Cell). It designed for
solving of non-stationary electrodynamics problems with
complex geometry and including dynamics, in general,
relativistic particles (electrons, ions, neutrals).
Transportation and acceleration of the HCIB in
magneto-isolated gap (cusp) have been investigated.
Fig. 1 shows the geometry of the problem, where
xL – transverse and zL – longitudinal dimensions of the
system, xmin and xmax – internal and external dimensions
of ion and electron (compensating current of the HCIB)
beams, as well as the configuration of the external mag-
netic field generated by coils.
Fig. 1. The configuration of the external magnetic field,
regions of beam injection
The magneto-isolated gap has a cylindrical shape
with a diameter of 0.2 m (transverse dimensions xL =
0.2 m, уL = 0.2 m) and in the length of 0.07 m (longitu-
dinal dimension of the computational domain). Three
points in which shown the curves in Fig. 2, are the ref-
erence points, selected to illustrate the various charac-
teristics of the problem in their original location (on the
section of the beam: 0.055 and 0.06 m – points near the
inner and outer radii of the beam, respectively, 0.058 m
– a point on the average radius of the beam).
Fig. 2. Dependence of the longitudinal component
of the magnetic induction of the external field on the
longitudinal coordinate z in various points in x, y
Investigations were carried out using 3-dimensional
simulation in xyz-geometry. Initially, there is a sym-
metry beams and systems along a line parallel to the z
axis and passing through the point x = 0.1 m, y = 0.1 m,
indicated in Fig. 1 by dashed line, but the dynamics of
the beams leads to disruption of the initial axial sym-
metry along the indicated line. A Fig. 1 shows a section
of the system by plane xz, section by yz plane is not illus-
trated, since by virtue of initial axial symmetry, is similar
Fig. 1.
In the initial time the ion beam with density
nbi = 7.33·1017 m-3 and velocity Vbi = 0.27 c and electron
beam with the same current density, with density
nbe = 2·1017 m -3 and velocity Vbe = 0.99 c are injected
from the right. Internal xmin = 0.037 m, external –
xmax = 0.047 m dimensions of the beams.
Two methods of numerical simulation were consid-
ered. Rough way: a small number of macroparticles (3
per cell), the maximum number of cells along the x
Imax = 60, along y Kmax = 60, along the z Jmax = 70. Accu-
rate way: Imax = 180, Kmax = 180, Jmax = 70, the number
of macroparticles 10 particles per cell. The number of
cells along the z axis remains unchanged, since for the
longitudinal dimension of the system (0.07 m), this val-
ue is acceptable. In both cases, the Courant-Friedrich-
Levy condition is performed. For brevity, the first case
we shall call the “rough” and the second – “accurate”. It
should be noted, that accumulation of numerical errors
in the dependence of number of macroparticles has been
studied earlier (see, for example [9]).
Fig. 3 shows the dependence of the longitudinal
component of the electrical field Ez on the longitudinal
coordinate z at different times in the described above
reference points, the left hand column – “rough” case,
the right-hand column – “accurate”. It can be seen that
in all cases, the behavior of the curves retained, unlike
the important details. So, after one time of an ion flight
through the system τ for “rough” case the minimum of
the own electric field -9.1·107 V/m, and a maximum of
≈ 1.6·107 V/m, in the second half of the gap the field is
positive (see Fig. 3,a). Whereas for the “accurate” case
the minimum of the electric field -9.9·107 V/m, and the
maximum is broader and higher ≈ 1.9·107 V/m, in the
second half of the magneto-isolated gap the field also
becomes positive, but the curves more abruptly increase,
and the electric field is more uniform (see Fig. 3,b).
Such behavior of the electrical field is maintained and at
other moments of times. But for the “rough” case after
10 τ, the electrical field at the outer edge of the beam
after z = 0.04 m is positive almost till the end of the
system, while in the center and on the inner edges of the
beams the field is positive only on a small (0.01 m) area
of the gap (see Fig. 3,c), i. е. electric field became less
uniform and the acceleration of the HCIB is realized in
the main for particles of outer ion beam edge. In the
“accurate” case, the electric field is uniform after 10 τ
(see Fig. 3,d). After 20 τ in the “rough” case, the electric
field becomes some more uniform, but the area, where
the field is positive, decreases (see Fig. 3,e), and in the
“accurate” case, value of the electric field after maxi-
mum markedly decreased, and at the inner edge beams
field is close to zero, but minimum of the field has be-
come a little more -1.02·108 V/m (see Fig. 3,f).
ISSN 1562-6016. ВАНТ. 2015. №4(98) 131
Fig. 3. Dependence of the own longitudinal electric field
Ez on the longitudinal coordinate z at different points in
x, y, in different moments of time; a, c, e – “rough” case;
b, d, f – “accurate” case; a, b – after 1 time of ion flight
of the system τ; c, d – after 10 τ; e, f – after 20 τ
Fig. 4 shows the dependence of the longitudinal
component of the current of the electron beam Ize on the
longitudinal coordinate z in different moments of time.
Fig. 4. The dependence of the longitudinal component
of the current Ize on the longitudinal coordinate z in
both cases and in different moments of time; a, c, e –
“rough” case; b, d, f – “accurate” case; a, b – after 1
time of ion flight τ; c, d – after 10 τ; e, f – after 20 τ
It can be seen that in the “accurate” case for the
moments of time (see Figs. 4,b,d,f) appreciable current
oscillations are practically absent, whereas in the
“rough” case (see Figs. 4,a,c,e) the oscillation amplitude
reaches 1.5 kA. Note that the not only behavior of the
curves differs, but also current value, which in “accu-
rate” case is higher than in the “rough” case more than
1 kA. For example, after 20 τ in the “rough” case a cur-
rent at the exit from magneto-isolated gap is -6 kA (see
Fig. 4,e), and in the “accurate” case is -8.6 kA (see Fig.
4,f). These differences are related with the using in a
numerical simulation in the first case a large spatial step
and a small number of particles, resulting in the accu-
mulation of numerical errors and thus in inaccurate cal-
culation of equations. In the “accurate” case substantial
numerical noises are absent, numerical errors are mini-
mal and do not affect the accuracy of the results. It can
be seen not only from the current dependence on the
longitudinal coordinate z, but also from the dependence
of the electron beam density on the longitudinal coordi-
nate z (see Fig. 5). As can be seen from Fig. 5, in the
“rough” case dependences of the electron beam density
are more “noisy” (have noticeable oscillations) and the
maximum of density is less (see Figs. 5,a,c,e) than in the
“accurate” case, where not only the electron beam den-
sity is greater at ≈ 1·1017 m-3, but the curves are smooth-
er, uniform in the longitudinal and transverse direction
(see Figs. 5,b,d,f). It should be noted that after 20 τ
maximal density in the “rough” case is on the outer edge
of the initial section of the beam (see Fig. 5,e), whereas
in the “accurate” case is in the center (see Fig. 5,f).
Fig. 5. The dependence of the electron beam density
on the longitudinal coordinate z in various points in x, y
and in different moments of time; a, c, e –“rough” case;
b, d, f – “accurate” case; a, b – after 1 time
of ion flight τ; c, d – after 10 τ; e, f – after 20 τ
ISSN 1562-6016. ВАНТ. 2015. №4(98) 132
Dynamics of HCIB acceleration is shown in Fig. 6.
It can be seen that after 1 τ ion dynamics in both cases
remains unchanged, except larger energy spread at the
exit from the system in the “rough” case (see
Fig. 6,a,c,e) than in the “accurate” (see Figs. 6,b,d,f).
Fig. 6. The dependence of the kinetic energy of the ion
beam Wki on the longitudinal coordinate z in both cases
and in different moments of time; a, c, e – “rough”
case; b, d, f – “accurate” case; a, b – after 1 time
of ion flight τ; c, d – after 10 τ; e, f – after 20 τ
Since the main purpose of the work was search for
the parameters of the beams and magneto-insulated gap,
providing HCIB acceleration, then, as shown in Fig. 6,
preliminary calculations can be done using rough mesh
and a small number of particles. This allowed signifi-
cantly reducing the duration of the calculations, because
numerical simulation of this system required quite a
long time.
More accurate and detailed studies must not be car-
ried out using the “rough” case, since numerical errors
are significant and contribute significantly to the results
of calculations, resulting in nonphysical effects. There-
fore, the final simulations (after optimization of beams’
and system’s parameters) have been carried out by
means of adequate numerical model, which minimized
accumulation of numerical errors.
1.2. DISCUSSION OF NUMERICAL
SIMULATION RESULTS
We have previously studied the acceleration of HCIB,
compensated by the electron beam, in a few accelerating
gaps [10]. An external magnetic field in such a system
was set by special function depending on the transverse
and longitudinal dimensions of the system [10]. In this
paper the selection of parameters of beams and system
for effectively acceleration of the HCIB has been car-
ried out. The external magnetic field is set with the coils
with opposite currents of the same value. Such a method
of forming an external magnetic field can be realized in
an LIA experimental model (see Fig. 2). Due to the
found parameters succeeded in achieve not only HCIB
transport, but and efficient acceleration of the ion beam
(see Fig. 6,d) in the magneto-isolated gap.
In the case of HCIB transportation compensating
electron beam after 10 τ accelerates, obtaining 2 MeV,
(Fig. 7,a) and at HCIB acceleration, when an electric
field has been applied between 0.02 and 0.05 m along
the gap and corresponds to the energy ≈ 2 MeV
(Ez = 6.6·107 V/m), the electron beam is slowed down,
losing 2 MeV at this region of the gap (Fig. 7,b).
Wherein in the beginning of magneto-isolated gap the
electron beam accelerates, since in this area Ez = 0, and
the space charge of the HCIB has not been compensated
(initial velocity of electron beam in 3.66 times higher
than the speed of the HCIB). Then, at the region, where
Ez = 6.6·107 V/m, the electron beam slows down in the
electric field, which accelerates ions. At the end of the
gap, where Ez = 0, the kinetic energy of the electron
beam does not change, and the velocity becomes close
to the speed of the HCIB, thus electron beam density
becomes higher than original one at several times,
whereby the ion beam charge is practically compensated
at the exit from the gap.
Fig. 7. The dependence of the kinetic energy
of the electron beam Wke on the longitudinal coordinate
z after 10 τ; a – Ez = 0; b – Ez = 6.6·107 V/m
It should be noted, that during HCIB transport the
electron beam current practically does not change
(Fig. 8), whereas at the HCIB acceleration, and its value
is reduced by almost in 2 times (see Fig. 4,d).
Fig. 8. The dependence of longitudinal component
of the electron beam current Ize on the longitudinal
coordinate z after 10 τ at Ez =0
This is related to the fact that at the HCIB accelera-
tion part of the electron beam is decelerated, and a por-
tion is returned back, that provide the charge compensa-
tion of HCIB in the second half of the magneto-isolated
gap. In the beginning of the gap, where the HCIB com-
ISSN 1562-6016. ВАНТ. 2015. №4(98) 133
pensation is insufficient, the ion beam is decelerated,
then accelerated in the electric field, and then in the
region, where Ez = 0, its energy remains unchanged,
since HCIB practically compensated (see Fig. 6,d).
While in HCIB transport, ion beam is slowing all along
magneto-isolated gap, losing to the end of the system ≈
2 MeV (Fig. 9).
Fig. 9. The dependence of the kinetic energy of the ion
beam on z after 10 τ at Ez = 0
It should be point out (Fig. 10) that, as in the case of
transport, and in the case of acceleration HCIB current
retains its value close to the initial at the exit of the sys-
tem. The only difference is that during HCIB accelera-
tion the ion beam current is more uniform along the gap.
Fig. 10. The dependence of longitudinal component of
the ion beam current Iz on the longitudinal coordinate z
after 10 τ; a – Ez = 0; b – Ez = 6.6·107 V/m
CONCLUSIONS
In this paper we have studied the dynamics of the
ion beam transport and acceleration in LIA magneto-
isolated gap in the presence of an external magnetic
field generated by the coils with opposing currents.
Considered the next variants of HCIB acceleration sim-
ulation: 1) using of simplified model (rough grid, large
spatial step, a small number of macroparticles), but the
time step is small enough to accumulation of errors as-
sociated with the time step was minimal; 2) using of
normal model (the spatial step and the number of par-
ticulates acceptable for the given problem and its nu-
merical solution). Using acceptable numerical model,
HCIB transportation has been studied for the same pa-
rameters of the system and beams, as in two variants,
noted above.
It is shown that at numerical study of particle dy-
namics rough numerical parameters can only be used for
preliminary simulations. In this case, the next depend-
encies have almost the same value and character: the
kinetic energy of the electron beam and the HCIB on the
coordinates, velocities of the beams on the coordinates
for simulations, carried out roughly and accurately. But
dependencies on the density, current of the beams on
coordinates differ greatly as in magnitude and character,
since the numerical noise (the accumulation of numeri-
cal errors) leads to significant oscillations of the these
values. Consequently, rough numerical experiment, the
duration of which is low (this significantly accelerates
the necessary calculations) can be carried out only for a
qualitative preliminary study of particle dynamics, and
for the final researches is necessary to use a numerical
model that excludes a significant accumulation of nu-
merical errors and appearing of the nonphysical effects.
Found the parameters of the beams and magneto-
isolated gap, for which HCIB transport and acceleration
are realized with maintaining its density, cross-section,
current close to the original.
It is shown that in found conditions HCIB almost
uniformly accelerated (ion beam energy is increased by
2 MeV on length where there is accelerating electric
field corresponding to an energy of 2 MeV), and elec-
tron beam slowed down and lost 2 MeV.
During HCIB acceleration, ion beam is slowed down
in the beginning of the gap, since because of the large
difference in the speeds and densities of HCIB and elec-
tron beam, ion beam charge compensation is realized
only on ≈ 30%. But as in the experimental section of
LIA accelerating gap is after a drift gap, where veloci-
ties of beams are close and there is additional injection
of electrons, then after docking drift and accelerating
gaps in magneto-isolated gap with the HCIB will come
not only slow electron beam, but also additional elec-
trons [7]. This allows to expect that even in the begin-
ning of the gap the ion beam does not slow down, since
space charge of HCIB is compensated, that we shall
present in our next works.
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Article received 29.04.2015
ТРАНСПОРТИРОВКА И УСКОРЕНИЕ СИЛЬНОТОЧНОГО ИОННОГО ПУЧКА
В МАГНИТОИЗОЛИРОВАННОМ ПРОМЕЖУТКЕ
В.И. Карась, Е.А. Корнилов, О.В. Мануйленко, В.П. Тараканов, О.В. Федоровская
Продемонстрирована возможность транспортировки и ускорения сильноточного ионного пучка в магни-
тоизолированном промежутке. Найдены параметры системы и пучков (величина магнитного поля, создан-
ного катушками со встречными токами, размеры системы, параметры пучков), при которых осуществляется
равномерное ускорение по длине промежутка. Показано, что качество ионного пучка при его транспорти-
ровке и ускорении на выходе из промежутка остается приемлемым для многих технологических примене-
ний.
ТРАНСПОРТУВАННЯ ТА ПРИСКОРЕННЯ ПОТУЖНОСТРУМОВОГО ІОННОГО ПУЧКА
В МАГНІТОІЗОЛЬОВАНОМУ ПРОМІЖКУ
В.І. Карась, Є.О. Корнілов, О.В. Мануйленко, В.П. Тараканов, О.В. Федорівська
Продемонстровано можливість транспортування та прискорення потужнострумового іонного пучка в ма-
гнітоізольованому проміжку. Знайдено параметри системи та пучків (величина магнітного поля, яке створе-
но котушками із зустрічними струмами, розміри системи, параметри пучків), при яких здійснюється рівно-
мірне прискорення по довжині проміжку. Показано, що якість іонного пучка при його транспортуванні та
прискоренні на виході з проміжку залишається прийнятною для багатьох технологічних застосувань.
introduction
1.1. numerical model
1.2. DISCUSSION OF numerical simulation results
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