On a method of tuning of couplers for electron LINACS based on disk loaded waveguides
The article presents an adjustment procedure for an input and output couplers of a traveling wave accelerating section based on cylindrical disk loaded waveguide (CDLW). The procedure consists in bead pull measurement of on axis field and calculation of reflection from the coupler under adjustment u...
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| Опубліковано в: : | Вопросы атомной науки и техники |
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| Дата: | 2015 |
| Автори: | , , , , , , , , |
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Національний науковий центр «Харківський фізико-технічний інститут» НАН України
2015
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | On a method of tuning of couplers for electron LINACS based on disk loaded waveguides / N.I. Aizatskyi, K.Yu. Kramarenko, I.V. Khodak, V.A. Kushnir, V.V. Mytrochenko, A.M. Opanasenko, S.A. Perezhogin, L.I. Selivanov, V.F. Zhiglo // Вопросы атомной науки и техники. — 2015. — № 6. — С. 8-12. — Бібліогр.: 8 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1860259144066400256 |
|---|---|
| author | Aizatskyi, N.I. Kramarenko, K.Yu. Khodak, I.V. Kushnir, V.A. Mytrochenko, V.V. Opanasenko, A.M. Perezhogin, S.A. Selivanov, L.I. Zhiglo, V.F. |
| author_facet | Aizatskyi, N.I. Kramarenko, K.Yu. Khodak, I.V. Kushnir, V.A. Mytrochenko, V.V. Opanasenko, A.M. Perezhogin, S.A. Selivanov, L.I. Zhiglo, V.F. |
| citation_txt | On a method of tuning of couplers for electron LINACS based on disk loaded waveguides / N.I. Aizatskyi, K.Yu. Kramarenko, I.V. Khodak, V.A. Kushnir, V.V. Mytrochenko, A.M. Opanasenko, S.A. Perezhogin, L.I. Selivanov, V.F. Zhiglo // Вопросы атомной науки и техники. — 2015. — № 6. — С. 8-12. — Бібліогр.: 8 назв. — англ. |
| collection | DSpace DC |
| container_title | Вопросы атомной науки и техники |
| description | The article presents an adjustment procedure for an input and output couplers of a traveling wave accelerating section based on cylindrical disk loaded waveguide (CDLW). The procedure consists in bead pull measurement of on axis field and calculation of reflection from the coupler under adjustment using the field values at three points separated by a geometric period of the adjacent CDLW. Description of a model for coupler tuning as well as tuning results also are presented.
Наведено опис процедури налаштування вхідного і вихідного трансформаторів типу хвилі (ТТХ) прискорювальної секції промислового прискорювача електронів на базі циліндричного діафрагмованого хвилеводу. Показано високу ефективність застосованої методики при створені ТТХ для таких прискорювальних секцій.
Приведено описание процедуры настройки входного и выходного трансформаторов типа волны (ТТВ) ускоряющей секции промышленного ускорителя электронов на базе цилиндрического диафрагмированного волновода. Показана высокая эффективность примененной методики при создании ТТВ для таких ускоряющих секций.
|
| first_indexed | 2025-12-07T18:53:40Z |
| format | Article |
| fulltext |
ISSN 1562-6016. ВАНТ. 2015. №6(100) 8
ТЕОРИЯ И ТЕХНИКА УСКОРЕНИЯ ЧАСТИЦ
ON A METHOD OF TUNING OF COUPLERS FOR ELECTRON LINACS
BASED ON DISK LOADED WAVEGUIDES
N.I. Aizatskyi, K.Yu. Kramarenko, I.V. Khodak, V.A. Kushnir, V.V. Mytrochenko,
A.M. Opanasenko, S.A. Perezhogin, L.I. Selivanov, V.F. Zhiglo
National Science Center “Kharkov Institute of Physics and Technology”, Kharkov, Ukraine
E-mail: mitvic@kipt.kharkov.ua
The article presents an adjustment procedure for an input and output couplers of a traveling wave accelerating
section based on cylindrical disk loaded waveguide (CDLW). The procedure consists in bead pull measurement of
on axis field and calculation of reflection from the coupler under adjustment using the field values at three points
separated by a geometric period of the adjacent CDLW. Description of a model for coupler tuning as well as tuning
results also are presented.
PACS: 29.20.Ej
INTRODUCTION
An accelerating section for the industrial electron
linac that is under development at NSC KIPT is based
on the CDLW [1]. The section contains a buncher with
smoothly varying phase velocity to ensure efficient cap-
ture of low energy beam during the initial acceleration.
Couplers are used for input of high frequency (rf) power
to the structure (input coupler) and for removing of its
unused part (output coupler). Usually, for reaching low
reflections from section, the couplers must be tuned
experimentally. The traditional technique of coupler
tuning is based on the analysis of reflection coefficient
change in a waveguide connecting the generator of rf-
power with the coupler when the reflecting plunger or
the absorber is moved along structure with a step of
DLW period. It is assumed that inaccuracies in section
manufacturing are absent (see, for example, [2]). The
main problem of such method is manufacturing of suffi-
ciently long part of the section (not less than six peri-
ods) without the inaccuracies. For inhomogeneous ac-
celerating section with variable phase velocity this is
probably impossible because the exact cell sizes are
generally unknown.
Design feature of the developed section is that the
first two and the last two cells are the same in pairs.
Therefore our goal is to obtain such coupler tuning
technique in which part of the section without the inac-
curacies of manufacturing would be minimal.
1. COUPLER TUNING TECHNIQUE
In [3, 4] the tuning technique based on measuring of
the fields in three adjacent cells by the method of non-
resonant perturbation is used. Method of finding the
reflection from the coupler using the field values at
three points separated by a distance that is equal to the
geometric period of the structure is proposed in [5]. Cri-
terion of applicability of the technique for the regions
where the periodicity is violated (the coupler regions) is
also obtained in this paper.
Assume that the complex field amplitude in the trav-
elling wave section Ec(z) can be represented as superpo-
sition of forward and backward waves with the real pos-
itive phase function ( )zφ . Introducing a complex re-
flection coefficient R from inhomogeneity (from cou-
pler), we can represent the electric field as:
( ) ( ) ( ) ( ) j z j z
cE z E z e R eφ φ− = + . (1)
From Floquet’s theorem it follows that fields
through the structure period D differs only by a phase
factor, which corresponds to a phase shift ψ per period.
In this case [5]
( ) ( ) ( )cos
2 ( )
c c
c
E z D E z D
E z
ψ − + +
= , (2)
( )
( )
2
2sin j ( ) ( )
2 ( )e (2sin + ) (j )
2 ( )
c c
j c
c c
c
E z D E z D
E zR E z D E z D
E z
φ
ψ
ψ
− − +
⋅ =
− − +
−
, (3)
where ( ) ( ) 22 2 j 2 2 j
c 1 ,E z e E z R eφ φ = + ⋅
( )2 22 2
c( ) ( ) 1 2 real jE E R R ez z φ⋅= + + ⋅ .
In homogeneous CDLW (far from inhomogeneities)
the Floquet theorem conditions are fulfilled, waves
propagate without reflections, so |R| and cos(ψ) in Eqs.
(2, 3) do not depend on the longitudinal coordinate z.
Near the coupler these values are functions of z [5],
because to satisfy the boundary conditions in the cou-
pler electromagnetic field must contains evanescent
waves. When moving away from the coupler, evanes-
cent waves attenuate. The question is at what distance
from the coupler these components can be neglected in
order to use the considered tuning technique. In [6] the
model consisting of 4 cells and two couplers was used
for simulation. At a distance of about two periods from
the coupler the evanescent waves influence on the field
distribution insignificantly. Based on this we propose
the following model for coupler tuning (Fig. 1). The
model is composed of coupler, two first cells of the ac-
celerating section for an input coupler (or two last cells
for output coupler) and one additional cell with an addi-
tional coupler (shadowed part in Fig. 1).
Thus for tuning model we need to have 4 identical
discs and 3 rings. Each ring attached to corresponding
disc is tuned using technique [7] taking into account the
correction on vacuum, brazing fillets and difference of
ambient temperature from section operating tempera-
ture. In order to tune mostly the size of the coupling
hole, the preliminary tuning of cell radius is necessary.
It should be noted that in our design the coupling hole is
mailto:mitvic@kipt.kharkov.ua
ISSN 1562-6016. ВАНТ. 2015. №6(100) 9
shaped as a rectangular window. The length of the hole
coincides with the length of the coupler cell and is the
constant value at the tuning, so only the width of the
hole is the subject for change. Since the coupler con-
struction does not allow a change of frequency within
the wide limits (≤±2 МHz), the radius of coupler ring
has to provide the frequency within that range. We take
the radius value basing on our previous experience in
coupler fabrication. The coupler radius can be also ob-
tained with a 3D electromagnetic code.
Fig. 1. Model for coupler tuning. 1 are rectangular
waveguides; 2 are coupler cells; 3 are regular cells of
the section; 4 are coupling holes; 5 is additional cell;
6 are evanescent parts of coupler cells
At fabrication of the model cells it is much simpler
to measure the cavity frequency than the cavity diame-
ter. Therefore each step of tuning can be simulated us-
ing the SUPERFISH code [8]. In particular the
SUPERFISH model shown in Fig. 2 was used to deter-
mine the eigenfrequency of coupler cell.
-4 -3 -2 -1 0 1 2 3 4 5 6
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
-4 -3 -2 -1 0 1 2 3 4 5 6
Discs
Rings
evanescent part of the
coupler cell
Fig. 2. SUPERFISH model for obtaining
of eigenfrequency of coupler cell
This model consists of the coupler cell with the
fragment of evanescent waveguide for beam input and
two adjacent cavities of the section. Radii of the section
cavities used in simulation were obtained from the equa-
tion b = cν010/f, where f is the measured frequency of
E010 mode of a pillbox cavities formed by the rings and
flat walls, c is the velocity of light, ν010 is the Bessel
function root.
Simulation model has three eigenfrequencies. At the
highest frequency the maximum of the field is in the
coupler (see Fig. 2). Therefore the value of this frequen-
cy is the most sensitive to the value of the coupler radi-
us.
At preliminary tuning of the coupler cell the fre-
quency of the model was adjusted to the calculated one
by diamond turning of the coupler ring taking into ac-
count the mention above correction.
It should be noted that the layout shown in Fig. 2
needs two regular cells, and for the layout in Fig. 1 it is
necessary to adopt three of such cells, so the middle cell
was used in both cases.
Parameters of the model for coupler tuning are pre-
sented in Table 1.
Table 1
Parameters of the model for coupler tuning
Parameters Input
coupler
Output
coupler
Operating frequency, MHz 2856 2856
Period, mm 20.792 34.99
Disc thickness, mm 4 4
Length of ring in regular
cell, mm
16.792 30.99
Length of ring in coupler,
mm
16,792 34
Radius of aperture, mm 16 12.056
Radius of ring in regular
cell, mm
44.000 41.335
Radius of ring in coupler,
mm
42.308 40.4
Number of periods of regu-
lar part
3 3
After the coupler cell frequencies had been preset to
the calculated ones both parts of the model shown in
Fig. 1 (without rectangular waveguides and coupling
holes) were brazed separately. To measure eigenfre-
quencies the model was excited by antennas located in
an evanescent portion of the coupler. For input coupler
measured eigenfrequencies gave satisfactory agreement
with simulated ones (Table 2). Another picture was ob-
served for output coupler. The resonant frequency of the
coupler cell is far outside the bandwidth of the travel-
ling wave section with a = 12.056 mm. Therefore the
coupling between couplers was so week that resonant
curve had only one peak.
Table 2
Eigenfrequencies of the model for input coupler
RF test frequency,
MHz
Simulated
frequency, MHz
Difference,
MHz
2944.068 2945.58 1.5120
2940.296 2941.92 1.6240
2857.78 2857.46 -0.3200
2783.578 2784.39 0.8120
2719.464 2719.94 0.4760
After brazing of the two parts of the model (see
Fig. 1) notches for rectangular waveguides were
fabricated. The notch in the input coupler was
performed by electrospark cutting and in the output
coupler it was performed by milling. The segment of
rectangular waveguide with flange was fited to the
ISSN 1562-6016. ВАНТ. 2015. №6(100) 10
notch of input coupler. The fitting accuracy ensured the
capillary wetting of the surfaces in subsequent brazing.
Short segments of the stainless steel waveguides were
brazed into notches of the output couplers. Rectangular
coper waveguide with flange have to be welded to the
segment after joining of the output coupler to the
accelerating section.
To agjust the size of coupling hole, it is nesessary to
disconnect the rectangular waveguide from the coupler,
and that waveguide should be firmly pressed to ensure
electrical contact when reflection coefficient is measured.
Quick connection and disconnection of waveguides were
provided with the system of cable wires and handles that
operated as a catch clip. Two parts of the model were
pressed together by using three rods (Fig. 3). The model
was set to the platform, where the bead pull mechanism
was located. Unambiguity of setting of the model over
the longitudinal coordinate was provided by its
connection with the input rectangular waveguide. The
position of rectangular waveguide does not change.
Unambiguity of setting of the model over the transvercal
coordinates was provided by cilindrical supports under
flanges, which ensure the contraction of two parts of the
model. Output coupler was tuned in analogous stand.
The difference was that the waveguides was pressed to
the short segments of the stainless steel waveguides.
Fig. 3. Stand for input coupler adjustment
At coupler adjustments one of the couplers was
connected through the measuring directional coupler to
the network analyzer HP 8753, and the second one to a
matched load. The process of the bead pull measure-
ment was performing using a personal computer run-
ning specially developed software.
2. TUNING RESULTS
Initial size of the coupling hole in the input coupler
was 30 mm. The measured value of the element S11 of a
scattering matrix was 0.9 in this case (Fig. 4). It should
be noted that R (see Eq.(3)) was measured with
considerable error at such value of S11 because it was
necessary to distinguish the contribution of the
reflection from the bead on the background of a
significant reflection from the coupler. In this regard,
we averaged both the raw data (HP 8753 was operated
at the averaging factor of 8 or even 16) and the R coeffi-
cient data calculated at several measurement sessions. In
order to decide what we need to adjust (hole size or cell
frequency) several experiments were conducted. It was
found that the main reaction of R on changes in the
coupler is the following: imaginary part of R reacts on
the cell frequency. The higher the frequency, the smaller
the imaginary part of R. Based on the obtained data
coupling holes of the both couplers were waiden
simultaneously to the value of 34.5 mm and then each
hole was widen alternately. Dependence of the global
koefficient S11 on the size of coupling hole L is shown
in Fig. 4.
30 31 32 33 34 35 36
0
0.2
0.4
0.6
0.8
1
L (mm)
S
11
(l
in
ea
r)
Fig. 4. Dependence of the global koefficient S11 on the
size of input coupler hole L
As a result of coupler tuning the following values of
|R|, Real(R), Imag(R), cos(ψ) were obtained at the
operating frequency: 0.0068, -0.0063, 0.0025, -0.4970
respectively.
It should be noted that the values required for cou-
pler tuninig were calculated with accuracy of 10-3. So
these values are very sensitive to various disturbances of
field structure in the system and measurement errors.
On a final stage of tuning of the input coupler the
measures for more precise adjustment had been taken.
In particular we tried to obtain cos(ψ) = -0.5 in the mid-
dle cell of the model at the linac operating frequency
(Fig. 5) and to symmetrize the dependence of cos(ψ) on
the longitudinal coordinate z. Nevertheless the absolute
symmetrization of cos(ψ) and |R| was not achieved
(Fig. 6). This can indicate that field in the three regular
cells of the model differ from field of homogeneous
unbounded disk-loaded waveguide. From the other hand
the field asymmetry in coupler cells because of coupling
holes could be the reason of observed asymmetry of
cos(ψ) and |R|. Rectangular waveguides could not be
placed in the same plane due to geometrical features of
the model and waveguides. Thus the asymmetry of the
field in couplers influences the results of measurements.
Nevertheless the couplers were tuned. Experiments
have shown that the smaller the measured value of |R|,
the better the symmetry of the field in the model.
Bandpass characteristic of the model is shown in Fig. 7.
ISSN 1562-6016. ВАНТ. 2015. №6(100) 11
60 80 100 120 140
-0.6
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
Z (mm)
co
s(
Ψ
)
Fig. 5. Dependence of cos(ψ) on longitudinal coordinate
60 80 100 120 140
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
Z (mm)
|R
|
Fig. 6. Dependence of |R| on longitudinal coordinate
There are five local minimums on the curve (in
accordance with the number of cells in the model).
Distributions of the field on the axis at the frequencies
corresponding to the local minimums of S11 (circles in
Fig. 7) are shown in Fig. 8. The midpoints of the cells
are marked with vertical lines.
2700 2750 2800 2850 2900
-40
-30
-20
-10
0
10
F (MHz)
s 11
(d
B)
Fig. 7. S11 of input coupler v.s. frequency
0 50 100 150 200
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
Z (mm)
E z (A
rb
. U
ni
ts
)
2714
2767
2831
2856
2881
Fig. 8. Field distribution on the axis of the model
for the frequencies corresponding to local minimums
of S11 (input coupler)
The symmetrical distribution of the fields at all
given frequencies (see Fig. 8) confirms the identity of
the couplers in the model. Besides that at the operating
frequency the reflections from the couplers are small
since the appreciable change of the phase shift of the
field on the period of the model (2π/3 mode) is not
observed.
The analogous procedures were performed for the
output coupler. The results are shown in Figs. 9-11.
2.8 2.82 2.84 2.86 2.88
-40
-30
-20
-10
0
10
F (GHz)
s 11
(d
B)
Fig. 9. S11 of output coupler v.s. frequency
0 50 100 150 200 250 300
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
Z (mm)
E z (A
rb
. U
nit
s)
Fig. 10. Field distribution on the axis of the model for
the frequencies corresponding to local minimums of S11
(output coupler)
Magenta curve in Fig. 10 corresponds to the operat-
ing frequency.
60 80 100 120 140 160 180
-0.8
-0.6
-0.4
-0.2
0
0.2
Z (mm)
co
s(
Ψ
)
2853
2853.9
2854.9
2856.05
2856.5
2857.05
2857.975
Fig. 11. Dependence of cos(ψ) on longitudinal
coordinate for number of frequencies
As a result of coupler tuning the following values of
|R|, Real(R), Imag(R), cos(ψ) were obtained at the
operating frequency: 0.0106, -0.0079, 0.0075, -0.5319
respectively.
After tuning both couplers were braized to the
section. The accelerating section was successfully
tuned. The technique and results of the section tuning
will be presented elsewhere.
ISSN 1562-6016. ВАНТ. 2015. №6(100) 12
CONCLUSIONS
The considered technique enabled us to tune the
couplers for disk-loaded waveguides.
REFERENCES
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system for an industrial linac // Problems of Atomic
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of a 50-cell constant gradient S-band travelling
wave accelerating structure by using a nonresonant
perturbation method. Internal Report DESY M-95-
02, 1995, p. 1-10.
4. J. Shi, A. Grudiev, A. Olyunin, W. Wuensch. Tun-
ing of CLIC accelerating structure prototypes at
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5. N.M. Kroll, C.-K. Ng, D.C. Vier. Applications of
time domain simulation to coupler design for period-
ic structures // Proc. of XX Intern. Linac Conf. 2000,
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6. Fang WenCheng, Tong DeChun, et al. Design and
experimental study of a C-band traveling-wave ac-
celerating structure // Chinese Science Bulletin.
2011, v. 56, № 1, p. 18-23
7. M.I. Ayzatsky, E.Z. Biller. Development of inho-
mogeneous disk-loaded accelerating waveguides and
rf-coupling // Proc. of Linear Accelerator Conf.
LINAC 96. 1996, p. 119-121.
8. J.H. Billen, L.M. Young. POISSON/ SUPERFISH
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Article received 02.11.2015
О МЕТОДИКЕ НАСТРОЙКИ ТРАНСФОРМАТОРОВ ТИПА ВОЛНЫ ЛИНЕЙНЫХ
УСКОРИТЕЛЕЙ ЭЛЕКТРОНОВ НА БАЗЕ ДИАФРАГМИРОВАННЫХ ВОЛНОВОДОВ
Н.И. Айзацкий, Е.Ю. Крамаренко, И.В. Ходак, В.А. Кушнир, В.В. Митроченко, А.Н. Опанасенко,
С.А. Пережогин, Л.И. Селиванов, В.Ф. Жигло
Приведено описание процедуры настройки входного и выходного трансформаторов типа волны (ТТВ)
ускоряющей секции промышленного ускорителя электронов на базе цилиндрического диафрагмированного
волновода. Показана высокая эффективность примененной методики при создании ТТВ для таких ускоря-
ющих секций.
ПРО МЕТОДИКУ НАСТРОЮВАННЯ ТРАНСФОРМАТОРІВ ТИПУ ХВИЛІ ЛІНІЙНИХ
ПРИСКОРЮВАЧІВ ЕЛЕКТРОНІВ НА БАЗІ ДІАФРАГМОВАНИХ ХВИЛЕВОДІВ
М.І. Айзацький, К.Ю. Крамаренко, І.В. Ходак, В.А. Кушнір, В.В. Митроченко, А.М. Опанасенко,
С.О. Пережогін, Л.І. Селіванов, В.Ф. Жигло
Наведено опис процедури налаштування вхідного і вихідного трансформаторів типу хвилі (ТТХ) прис-
корювальної секції промислового прискорювача електронів на базі циліндричного діафрагмованого хвиле-
воду. Показано високу ефективність застосованої методики при створені ТТХ для таких прискорювальних
секцій.
INTRODUCTION
1. coupler tuning technique
2. TUNING results
CONCLUSIONS
references
О методике настройки трансформаторов типа волны линейных ускорителей электронов на базе диафрагмированных волноводов
Про методику настроювання ТРАНСФОРМАТОРІВ ТИПУ ХВИЛІ ЛІНІЙНИХ прискорювачів електронів НА БАЗІ діафрагмованих ХВИЛЕВОДІВ
|
| id | nasplib_isofts_kiev_ua-123456789-112366 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 1562-6016 |
| language | English |
| last_indexed | 2025-12-07T18:53:40Z |
| publishDate | 2015 |
| publisher | Національний науковий центр «Харківський фізико-технічний інститут» НАН України |
| record_format | dspace |
| spelling | Aizatskyi, N.I. Kramarenko, K.Yu. Khodak, I.V. Kushnir, V.A. Mytrochenko, V.V. Opanasenko, A.M. Perezhogin, S.A. Selivanov, L.I. Zhiglo, V.F. 2017-01-20T17:43:25Z 2017-01-20T17:43:25Z 2015 On a method of tuning of couplers for electron LINACS based on disk loaded waveguides / N.I. Aizatskyi, K.Yu. Kramarenko, I.V. Khodak, V.A. Kushnir, V.V. Mytrochenko, A.M. Opanasenko, S.A. Perezhogin, L.I. Selivanov, V.F. Zhiglo // Вопросы атомной науки и техники. — 2015. — № 6. — С. 8-12. — Бібліогр.: 8 назв. — англ. 1562-6016 PACS: 29.20.Ej https://nasplib.isofts.kiev.ua/handle/123456789/112366 The article presents an adjustment procedure for an input and output couplers of a traveling wave accelerating section based on cylindrical disk loaded waveguide (CDLW). The procedure consists in bead pull measurement of on axis field and calculation of reflection from the coupler under adjustment using the field values at three points separated by a geometric period of the adjacent CDLW. Description of a model for coupler tuning as well as tuning results also are presented. Наведено опис процедури налаштування вхідного і вихідного трансформаторів типу хвилі (ТТХ) прискорювальної секції промислового прискорювача електронів на базі циліндричного діафрагмованого хвилеводу. Показано високу ефективність застосованої методики при створені ТТХ для таких прискорювальних секцій. Приведено описание процедуры настройки входного и выходного трансформаторов типа волны (ТТВ) ускоряющей секции промышленного ускорителя электронов на базе цилиндрического диафрагмированного волновода. Показана высокая эффективность примененной методики при создании ТТВ для таких ускоряющих секций. en Національний науковий центр «Харківський фізико-технічний інститут» НАН України Вопросы атомной науки и техники Теория и техника ускорения частиц On a method of tuning of couplers for electron LINACS based on disk loaded waveguides Про методику настроювання трансформаторів типу хвилі лінійних прискорювачів електронів на базі діафрагмованих хвилеводів О методике настройки трансформаторов типа волны линейных ускорителей электронов на базе диафрагмированных волноводов Article published earlier |
| spellingShingle | On a method of tuning of couplers for electron LINACS based on disk loaded waveguides Aizatskyi, N.I. Kramarenko, K.Yu. Khodak, I.V. Kushnir, V.A. Mytrochenko, V.V. Opanasenko, A.M. Perezhogin, S.A. Selivanov, L.I. Zhiglo, V.F. Теория и техника ускорения частиц |
| title | On a method of tuning of couplers for electron LINACS based on disk loaded waveguides |
| title_alt | Про методику настроювання трансформаторів типу хвилі лінійних прискорювачів електронів на базі діафрагмованих хвилеводів О методике настройки трансформаторов типа волны линейных ускорителей электронов на базе диафрагмированных волноводов |
| title_full | On a method of tuning of couplers for electron LINACS based on disk loaded waveguides |
| title_fullStr | On a method of tuning of couplers for electron LINACS based on disk loaded waveguides |
| title_full_unstemmed | On a method of tuning of couplers for electron LINACS based on disk loaded waveguides |
| title_short | On a method of tuning of couplers for electron LINACS based on disk loaded waveguides |
| title_sort | on a method of tuning of couplers for electron linacs based on disk loaded waveguides |
| topic | Теория и техника ускорения частиц |
| topic_facet | Теория и техника ускорения частиц |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/112366 |
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