Research of modifications of a beam and signals parameterd in technological linacs
The power current pulse linacs of electrons are used in the Science Research Complex "Accelerator" at NSC KIPT for irrradiation of materials and some products. The irrradiation sessions usually last tens of hours. Some results of the linac parameters for this period are given in the presen...
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| Опубліковано в: : | Вопросы атомной науки и техники |
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| Дата: | 1999 |
| Автори: | , |
| Формат: | Стаття |
| Мова: | Англійська |
| Опубліковано: |
Національний науковий центр «Харківський фізико-технічний інститут» НАН України
1999
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Research of modifications of a beam and signals parameterd in technological linacs / V.N. Boriskin, A.N. Savchenko // Вопросы атомной науки и техники. — 1999. — № 4. — С. 62-63. — Бібліогр.: 9 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1860207078826573824 |
|---|---|
| author | Boriskin, V.N. Savchenko, A.N. |
| author_facet | Boriskin, V.N. Savchenko, A.N. |
| citation_txt | Research of modifications of a beam and signals parameterd in technological linacs / V.N. Boriskin, A.N. Savchenko // Вопросы атомной науки и техники. — 1999. — № 4. — С. 62-63. — Бібліогр.: 9 назв. — англ. |
| collection | DSpace DC |
| container_title | Вопросы атомной науки и техники |
| description | The power current pulse linacs of electrons are used in the Science Research Complex "Accelerator" at NSC KIPT for irrradiation of materials and some products. The irrradiation sessions usually last tens of hours. Some results of the linac parameters for this period are given in the present paper.
|
| first_indexed | 2025-12-07T18:13:01Z |
| format | Article |
| fulltext |
RESEARCH OF MODIFICATIONS OF A BEAM AND SIGNALS
PARAMETERD IN TECHNOLOGICAL LINACS
V.N.Boriskin, A.N.Savchenko
NSC KIPT, Kharkov, Ukraine
The power current pulse linacs of electrons are
used in the Science Research Complex "Accelerator" at
NSC KIPT for irrradiation of materials and some
products. The irrradiation sessions usually last tens of
hours. Some results of the linac parameters for this
period are given in the present paper. The research was
performed at the one- section linac KUT and the two-
section linac EPOS. Their beam energies are not more
that 12 MeV and 30 MeV, respectively. The operation
linac frequencies are in the range of 150…. 300 Hz,
pulse beam current is not more than 1 A. The
technological object zone irradiated by accelerated
electrons is created with the magnet scanning system
[2].
The beam parameters are measured with the
automatic control system [3,4]. The form and value of
the pulse beam current (I) is measured with the magneto
inductance transducers [5].
Fig. 1. Videogram of the process of the electron beam
energy and beam pulse current control at the linac KUT
08.18.99.
The amplitude and average current values are
evaluated in response to a sensor signal by the control
system (Fig.1). The average value of the sensor signal
amplitude were computed with the sample of N=32
pulses to reduce the effect of an interference. If the
sample is more than 32 pulses, average estimated value
(Iav) is practically unchanged. (Fig. 2).
36
36.5
37
37.5
N
Ia
v
Fig.2. Convergence of the evaluation of the Iimp
average value at the accelerator complex output
(5.12.97).
The spontaneous changes of pulse current
amplitude that were observed for few hours run lay
within ± 10 % (Fig.3).
Амплитуда импульсного тока пучка ускрителя ЭПОС (с 11ч.40м. 18.08.99
до 8ч.40м. 19.08.99)
0
100
200
300
400
500
600
700
800
900
1
11
4
22
7
34
0
45
3
56
6
67
9
79
2
90
5
10
18
11
31
12
44
13
57
14
70
15
83
16
96
18
09
19
22
20
35
21
48
22
61
Тх2 мин.
I
(m
A
)
Fig. 3. EPOS linac pulse current amplitude
(08.18.99 11:40 – 08.19.99 8:40).
In [7, 8] it was shown that the scanning
electromagnet equipped by a beam position sensor may
be used for the on-line control of the electron energy.
The wide-aperture (50 x 200mm) magneto-induction
position transducer is used for the energy and position
control of the sweeped electron beam at the EPOS exit
[7]. On the KUT linac the slot hole Faraday cylinder [8]
is used for this purpose. One of the system modules
provides the simultaneous signal measurement from the
sensor winding and the scanning magnet excitation
current – Is (fig.4). Results of measurements of several
scanning cycles were used to calculate the maximum
Ymax and minimum Ymin values of the electron beam
center deviation and to determine the value R= Ymax -Ymin
and E=f(Is,R). The spontaneous changs of average
electron energy that were observed for few hours run
lay within 10 ± 1 MeV (KUT linac) and 21 ± 2 MeV
(EPOS linac).
Fig. 4. Videogram of the process of the electron beam
energy control on the linac EPOS.
The EPOS linac is also equipped with four
winding position sensors. These sensors enable one to
measure the center beam position (X, Y) with 0.5 mm
error and to evaluate the asymmetry of the beam form in
the cross-section (σ2x-σ2y) [9]. The center beam
position changes observed for twelfth hours were not
more than ± 1.5 mm and asymmetry changes were
± 5 mm2 (Fig.3).
ВОПРОСЫ АТОМНОЙ НАУКИ И ТЕХНИКИ. 1999. № 4.
Серия: Ядерно-физические исследования (35), с. 62-63.
62
.
(1)
-4.5
-4
-3.5
-3
-2.5
-2
-1.5
-1
-0.5
0
1 24 47 70 93 11
6
13
9
16
2
18
5
20
8
23
1
25
4
27
7
30
0
32
3
34
6
36
9
39
2
41
5
T(min)
Х(mm)
(2)
-3
-2.5
-2
-1.5
-1
-0.5
0
0.5
1
1 23 45 67 89 111 133 155 177 199 221 243 265 287 309 331 353 375 397
Т(min)
У(мм)
(3)
-15
-10
-5
0
5
10
15
20
1 27 53 79 10
5
13
1
15
7
18
3
20
9
23
5
26
1
28
7
31
3
33
9
36
5
39
1
Т(min)
(σ2
x-σ2
y)
Fig. 5
1. Change of the center beam position by X on exit of the EPOS second section.
2. Change of the center beam position by Y on exit of the EPOS second section.
3. Change of the beam cross-section asymmetry on exit of the EPOS second section.
E=21MeV, Ipulse=0.68 A (02.10.99 12:40 – 09:00)
REFERENCES
[1] A.N.Dovbnya et al. Electron Linacs Based
Radiation Facilities of Ukrainian National Science
Center KIPT / Bulletin of the American Physical
Society, May 1997, V.42, No.3, p.1391.
[2] A.N.Dovbnya et al. The Output Beam Scanning
and Forming in the Multipurpose Electron
Accelerators of KIPT / VANT, Series: Nucleic
Physics, 1997, vol 1(28). p. 114-121.
[3] V.N.Boriskin et al. Control system for a linear
resonance accelerator of intense electron beams /
Nucl. Instr. and Meth. in Phys. Res A 352 (1994)
61-62.
[4] V.Boriskin. Control System for Technological
Linacs /Proc.EPAC98, Stockholm, 1998.
[5] V.N.Boriskin et al. The System of the Linac LUE-
2000 Beam Parameters’ Measurement /Digest of
the XI Meeting on the Accelerated Particles,
Dubna, Russia, 1989,v.1, p.61-63.
[6] V.N.Boriskin et al. Channel of the Control of the
Beam Position in the High-Current LEA / Digest of
the XV Meeting on the Accelerated Particles,
Protvino, Russia, 1996.
[7] V.N.Boriskin, A.N.Savchenko, V.I.Tatanov.
Monitoring of the Electtron Beam Position in
Industrial Linacs/Proc. PAC99, NY, 1999.
[8] V.N.Boriskin, A.E.Tolstoy, V.L.Uvarov et al..
Automatic Control of the Electron Energy in the
Technological Linear Electron Accelerators/ Digest
of the XIV Meeting on the Accelerated Particles,
Protvino, Russia, 1994, vol.2, pp.97-98
[9] S.J.Russell et al. Characterization Beam Position
Monitors for Measurement of Second Moment/
Proc. PAC95, p.2580-2582.
63
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| id | nasplib_isofts_kiev_ua-123456789-81534 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 1562-6016 |
| language | English |
| last_indexed | 2025-12-07T18:13:01Z |
| publishDate | 1999 |
| publisher | Національний науковий центр «Харківський фізико-технічний інститут» НАН України |
| record_format | dspace |
| spelling | Boriskin, V.N. Savchenko, A.N. 2015-05-17T16:56:14Z 2015-05-17T16:56:14Z 1999 Research of modifications of a beam and signals parameterd in technological linacs / V.N. Boriskin, A.N. Savchenko // Вопросы атомной науки и техники. — 1999. — № 4. — С. 62-63. — Бібліогр.: 9 назв. — англ. 1562-6016 https://nasplib.isofts.kiev.ua/handle/123456789/81534 The power current pulse linacs of electrons are used in the Science Research Complex "Accelerator" at NSC KIPT for irrradiation of materials and some products. The irrradiation sessions usually last tens of hours. Some results of the linac parameters for this period are given in the present paper. en Національний науковий центр «Харківський фізико-технічний інститут» НАН України Вопросы атомной науки и техники Research of modifications of a beam and signals parameterd in technological linacs Исследования изменений параметров пучка и сигналов в технологических линейных ускорителях электронов Article published earlier |
| spellingShingle | Research of modifications of a beam and signals parameterd in technological linacs Boriskin, V.N. Savchenko, A.N. |
| title | Research of modifications of a beam and signals parameterd in technological linacs |
| title_alt | Исследования изменений параметров пучка и сигналов в технологических линейных ускорителях электронов |
| title_full | Research of modifications of a beam and signals parameterd in technological linacs |
| title_fullStr | Research of modifications of a beam and signals parameterd in technological linacs |
| title_full_unstemmed | Research of modifications of a beam and signals parameterd in technological linacs |
| title_short | Research of modifications of a beam and signals parameterd in technological linacs |
| title_sort | research of modifications of a beam and signals parameterd in technological linacs |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/81534 |
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