Pulse generators with nanosecond leading edge duration based on TPI-type pseudospark switches for FEL complex
For FEL (Free Electron Laser) complex used in Duke University, pulse generators (kickers) of Injection, Extraction and Generator of injection into a big ring are developed and built. As fast switches TPI-type thyratrons (PSS - pseudospark switches) are employed. The thyratrons can be considered as a...
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| Date: | 2008 |
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Національний науковий центр «Харківський фізико-технічний інститут» НАН України
2008
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| Cite this: | Pulse generators with nanosecond leading edge duration based on TPI-type pseudospark switches for FEL complex / O.V. Anchugov, Y.G. Matveev, D.A. Shvedov, V.D. Bochkov, D.V. Bochkov, V.M. Dyagilev, V.G. Ushich, S.F. Mikhailov, V.G. Popov // Вопросы атомной науки и техники. — 2008. — № 5. — С. 60-63. — Бібліогр.: 5 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1860217154296610816 |
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| author | Anchugov, O.V. Matveev, Y.G. Shvedov, D.A. Bochkov, V.D. Bochkov, D.V. Dyagilev, V.M. Ushich, V.G. Mikhailov, S.F. Popov, V.G. |
| author_facet | Anchugov, O.V. Matveev, Y.G. Shvedov, D.A. Bochkov, V.D. Bochkov, D.V. Dyagilev, V.M. Ushich, V.G. Mikhailov, S.F. Popov, V.G. |
| citation_txt | Pulse generators with nanosecond leading edge duration based on TPI-type pseudospark switches for FEL complex / O.V. Anchugov, Y.G. Matveev, D.A. Shvedov, V.D. Bochkov, D.V. Bochkov, V.M. Dyagilev, V.G. Ushich, S.F. Mikhailov, V.G. Popov // Вопросы атомной науки и техники. — 2008. — № 5. — С. 60-63. — Бібліогр.: 5 назв. — англ. |
| collection | DSpace DC |
| container_title | Вопросы атомной науки и техники |
| description | For FEL (Free Electron Laser) complex used in Duke University, pulse generators (kickers) of Injection, Extraction and Generator of injection into a big ring are developed and built. As fast switches TPI-type thyratrons (PSS - pseudospark switches) are employed. The thyratrons can be considered as an alternative to well-known switches, including hot cathode hydrogen thyratrons and up-to-date power solid state switches, whereas being more compact and cost-effective. Absence of hot cathode provides for turn-on time of the TPI about 3…5 ns in modes with thousands-amperes peak currents and sub-nanosecond jitter. The results of over 1.5 years of the pulse generators service are presented.
Для комплексу ЛСЕ, створеного в університеті Duke, розроблено і виготовлено п’ять генераторів-"кікерів": генератор інжекції, генератор екстракції і генератор інжекції у велике кільце. Як швидкі комутатори використано тиратрони ТПІ-типу, які називаються також pseudospark swіtches - PSS. Відсутність розжарюваного катоду дозволяє ТПІ забезпечити в режимах з кілоамперними піковими струмами більші, ніж класичним тиратронам, терміни служби, зменшений час включення і субнаносекундний джиттер. Представлено результати експлуатації імпульсних генераторів на протязі більше 1,5 року.
Для комплекса ЛСЭ, созданного в университете Duke, разработаны и изготовлены пять генераторов-«кикеров»: генератор инжекции, генератор экстракции и генератор инжекции в большое кольцо. В качестве быстрых коммутаторов использованы тиратроны ТПИ-типа, называемые также pseudospark switches - PSS. Отсутствие накаливаемого катода позволяет ТПИ обеспечить в режимах с килоамперными пиковыми токами большие, чем классическим тиратронам, сроки службы, уменьшенное время включения и субнаносекундный джиттер. Представлены результаты эксплуатации импульсных генераторов в течение более 1,5 лет.
|
| first_indexed | 2025-12-07T18:16:20Z |
| format | Article |
| fulltext |
PULSE GENERATORS WITH NANOSECOND LEADING EDGE
DURATION BASED ON TPI-TYPE PSEUDOSPARK SWITCHES
FOR FEL COMPLEX
O.V. Anchugov1, Yu.G. Matveev1, D.A. Shvedov1 V.D. Bochkov2, D.V. Bochkov2, V.M. Dyagilev2,
V.G. Ushich2, S.F. Mikhailov3, V.G. Popov3
1Budker Institute of Nuclear Physics SB RAS, 630090, Novosibirsk, Russia
2Pulsed Technologies Ltd., 5, Jablochkova str., 390023, Ryazan, Russia
3FEL Laboratory, Duke University, Durham, NC, USA
E-mail: anchugov@inp.nsk.su; pulsetech@mail.ru
For FEL (Free Electron Laser) complex used in Duke University, pulse generators (kickers) of Injection, Extraction
and Generator of injection into a big ring are developed and built. As fast switches TPI-type thyratrons (PSS − pseu-
dospark switches) are employed. The thyratrons can be considered as an alternative to well-known switches, includ-
ing hot cathode hydrogen thyratrons and up-to-date power solid state switches, whereas being more compact and cost-
effective. Absence of hot cathode provides for turn-on time of the TPI about 3…5 ns in modes with thousands-amperes
peak currents and sub-nanosecond jitter. The results of over 1.5 years of the pulse generators service are presented.
PACS 84.30.Ng
1. INTRODUCTION
The deflector "kickers" plates with high-voltage
nanosecond-width pulses applied to them are used to
pass-by charged particles from one accelerator element
to another [1]. Short pulse duration is necessary to kick
out or in contrary to put onto the equilibrium orbit of the
accelerator a single beam without touching neighboring
ones.
The principal objectives for designing FEL complex
generators were:
1) providing the minimum time jitter to avoid con-
tacting adjacent beams;
2) providing the minimum rise and decay time;
3) achieving "flattop" instability not more than
±5%for long pulses (100 ns);
4) providing capability of fivefold output voltage
tuning with pulse shape conservation.
The objective of development, research and opera-
tion of the generators is closely connected with applica-
tion of switches. The first switches used in kickers were
thyratrons with hot cathode. For high currents to
achieve ultra-fast switching tetrode thyratrons are nor-
mally used. At that, grid 1 is pulsed with about 100 A
and delayed trigger pulse is applied to grid 2. CX1599
thyratrons at faster 5 kV output driver with 3.5 ns rise-
time into a single 50 ohm load. CX1 171 thyratrons are
now employed in a variation of kickers circuit which
now offers a rise time of 25 ns to 6 kA, time jitter −
l.0…5.0 ns [2].
The shortcomings of conventional thyratrons − un-
controlled prefires, substantial power losses in heating
circuits - led to their replacement by solid state switches
(SSS) [3, 4]. However, due to high cost of the SSS-
based kickers, substantial overall dimensions and com-
plexity of the devices, the designers of the kickers are
compelled to look for alternative switches of the type. In
the report the collected results of research and employ-
ment of kickers with pseudospark switches TPI-type are
presented [5, 6].
2. SETUP AND RESULTS
TPI-thyratrons (Fig.1) with superdense glow and
partially arc discharge form are intended for switching
of up to 10-1 Coulombs in pulse mode at high frequency
rate. In circuits with grounded cathode they offer the
longest lifetime at lower cost than classical thyratrons
with heated cathode.
A
G
C
AA
1
2
AE
Fig.1. Schematic drawing of the TPI1-1k/20 PSS trig-
gered with a glow discharge inside a hollow cathode.
A – anode; G – grid; C – cathode; AA – auxiliary anode;
AE – low-work-function element. Position 1 – erosion
damages of cathode surface in microsecond mode;
position 2 – in submicrosecond mode
The computer simulation of electrical fields inside
the trigger region is carried out by solving the Laplace
equation in absence of space charge.
Fig.2. Equipotential contours in the cathode-trigger
unit of PSS. AA - auxiliary anode, U - potential on the
axis
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PROBLEMS OF ATOMIC SCIENCE AND TECHNOLOGY. 2008. № 5.
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60
mailto:anchugov@inp.nsk.su
The pictures of fields and distribution of potential on
axis of the electrode system allows to make a preliminary
conclusion that there is an electrostatic trap in a cavity of
the cathode of the given design (Fig.2). Such a trap at the
initial stage of temporal development of the discharge can
promote effective triggering of the discharge.
TPI-thyratrons were commercialized in the begin-
ning of 2000. With the purpose to define prospective of
applications of TPIs in modes with low discharge devel-
opment time BINP together with Pulsed Technologies
ltd, Ryazan, within 2001-2006 were conducting pro-
found investigations of the switches and modes of trig-
gering of the devices. We designed a driver for pulse
triggering via 2 grids with constant preparatory dis-
charge on the first grid (Fig.3). The design deficiencies
are discovered, prospects of application are shown.
PRE-TRIGGER
TEST SIGNAL
TRIGGER TEST
SIGNAL
THYRATRON MODULE
5k
1n
1N4007
470p
PRE-TRIGGER
DC PLASMA
HEATER
10n
TRIGGER
51
51
15k
15k
51
51
ТПИ1-1К/20
1
A
K
2
G2
Fig.3. Principal circuit of TPI-thyratron triggering, op-
erating in the mode with direct and pulsed auxiliary
preionization current
Employing TPI-thyratrons for FEL-complex of
Duke University five generators are designed and fabri-
cated: two of them are based on TPI1-1k/20 thyratrons
and three of them on TPI1-10k/20.
In the generators pulse command charging via pulse
forming network (PFN) with charging time 180 and
720 µs is employed.
INJECTION GENERATOR N1 (Fig.4,5) is built employing
compact 150 grams TPI1-1k/20 thyratron, shaping in a
load with impedance of 50 Ohm square bi-polar pulses
with duration of 100 ns, pulse leading edge of 5…10 ns
and "flattop" instability not greater than ±5% at the peak
overall voltage on deflecting plates from 5 to 10 kV.
H/V PSU
THYRATRON
MODULETHYPATRON
DRIVER
KICKER
INVERTOR
HEATER
DS PLASMA
PRE-TRIGGER
TRIGGER
0.5
DAC
ADC
110V, 60Hz
Door Switch
51
0.5
51
e-
START PRE-TRIGGER
START TRIGGER
Door Interlock
22M
Fig.4. Injection Generator N1schematic drawing
Considering relatively low voltage of the system a
circuit with single PFN is accepted. The circuit offers a
minimum pulse edge limited by the response speed of
thyratron only. The second deflector plate is connected
via inverter to avoid two generators connection for up-
per and lower plates simultaneously. The inverter is per-
formed of ferrite ring with coaxial cable PK coiled on it.
Fig.5. Injection Generator N1. Outline.
1 - thyratron in screen; 2 - PFN; 3 - driver;
4 - inverter; 5 - high-voltage DC generator
Two PK cables constitute the PFN. It is discovered
by experiment that the matching is optimum if
impedance (ρ) of one cable is 75 Ohm. At that,
impedance of PFN is 30 Ohm, and internal impedance
of thyratron in the given configuration is 5 Ohm (Fig.6).
Fig.6. On the oscillogram the change of flattop after
pulse in PFN from ρ = 25 и 30 Ohm
It is worth specifying that the pulses presented on
the oscillograms were taken not from generators output,
but from kickers matching terminators, when the pulses
are distorted by transport cables, plates and unmatched
loads. In the 1-st injection generator output pulse had a
leading edge of 5 ns.
EXTRACTION GENERATOR is built also on TPI1-1k/20
thyratron. It provides in a load with impedance of
50 Ohm, high-voltage pulses with duration at level 0.1
not greater than 15 ns at the peak overall voltage on
plates from 8 to 40 kV.
For the project realization we chose a circuit with
separated supply of every plate from separate generator.
Both generators are based on double coaxial PFN
(Blumlein line), since providing output voltage of a sin-
gle generator up to 20 kV on one PFN, employing TPI1-
1k/20 thyratrons as the fastest switches ever used, is not
possible due to the fact, that in this case the PFN charg-
ing voltage and, hence, anode voltage of the thyratron,
will be increased up to over 45 kV. Both generators are
identical except for one of the plates is connected to in-
verter, offering positive supply polarity (Fig.7,8).
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PROBLEMS OF ATOMIC SCIENCE AND TECHNOLOGY. 2008. № 5.
Series: Nuclear Physics Investigations (50), p.60-63.
61
PR
E-
TR
IG
G
E
R
TR
IG
G
E
R
D
C
P
LA
SM
A
PR
E-TR
IG
G
E
RTR
IG
G
E
R
D
C
P
LA
SM
A
THYRATRO
N
MODULE
THYRATRO
N
DRIVER
THYRATRO
N
DRIVER
H/V PSU
IN
VE
R
TO
R
Pressure
switch
THYRATRO
N
MODULE
H
EA
TE
R
H
EA
TE
R
22M22M
Door
Switch
110V, 60
Hz
START PRE-TRIGGER
START TRIGGER
START PRE-TRIGGER
START TRIGGER
DA
C
AD
C
KICKE
R
0.5
5
1
0.5
5
1
e
-
Fig.7. Extraction Generator schematic drawing
It is worth mentioning, that in extraction generator
pulse rise time did not change in a range of 4…20 kV
(i.e. at current change via the switch from 240 up to
1200 A), whereas in big ring injection generator from 5
to 25 kV (800…4000 A).
Fig.8. Extraction Generator. General view. 1 - driver,
2 - thyratron unit, 3 - pulse forming network, 4 - inverter
The generator built by the scheme (see Fig.7) has an
advantage by offering output voltage close to charging
one, however we have a problem connected with a fea-
ture of Blumlein line to increase output pulse leading
edge approximately as much as twice in respect to re-
sponse time of the switch. However, increasing PFN
charging voltage up to 30 kV we obtained acceptable
parameters of the output pulses for the given thyratrons.
Pulses from the matching loads are identical; one of
them is presented in Fig.9. Time jitter was less than
0.8 ns. Unlike previous generator in the presented one
we used pulse command charging of PFN via high-volt-
age step-up transformer with capacitor discharged onto
a primary winding. PFN charging time was 180 µs.
Fig.9. Pulse from the matching loads
GENERATOR OF INJECTION INTO A BIG RING is built on
TPI1-10k/20 thyratrons. With plate impedance of
25 Ohm it provides for pulse duration at level 0.1 not
greater than 100 ns at the peak overall voltage on plates
from 10 to 50 kV. In this case it was decided to employ
Blumlein line, since the requirements to the pulse
shapes are less tough and voltage is sufficiently higher.
Fig.10. Scheme of the generator of injection into a big ring
Fig.11. Generator injector into a big ring.
1 – charging source; 2 – driver; 3 – thyrtron; 4 – PFN;
5 – inverter; 6 – h/v transformer
____________________________________________________________
PROBLEMS OF ATOMIC SCIENCE AND TECHNOLOGY. 2008. № 5.
Series: Nuclear Physics Investigations (50), p. 60-63
62
PF
N
THYPATRON
DRIVER
INVERTO
R
TP
I
1
A
K
H
C
START
PRE -TRIGGER
START TRIGGER
HV
TRANSFORMER
KICKE
R
e-
0.
5
5
0
0.
5
5
0
Both plates are supplied from a single generator but
since their impedance is 25 Ohm they must be connect-
ed via two parallel cables PK50. That is why PFN
impedance was to be 6 Ohm. The choice of the switch
was conditioned by that reason and it was a high-current
thyratron TPI1-10k/20. In the given circuit at charging
voltage of 25 kV switching current is about 4 kA.
The pulse forming network consists of discrete ele-
ments − two parallel lines of 11 cells with 3 series ceramic
capacitors 470pF xl6 кВ, 470 pF (Fig.10,11).
CONCLUSIONS
TPI-thyratrons offer parameters fitting the principle
requirements to the generators: time jitter not greater
than 0.8 ns, rise and decay time of 4…5 ns, flattop insta-
bility for long-width pulse (100 ns) not greater than 5%,
capability of fivefold output voltage tuning with pulse
shape consevation.
Also:
- design of the generator is significantly simplified at
the expense of employment of one switch for supply of
both kicker plates and higher switching current (up to
10 kA)
- reliability of the generators is sufficiently higher as
well as manufacturability of fabrication and assembling,
in the accelerator system there is no evidence of self-
breakdowns.
It is worth mentioning that since in this configura-
tion fabricated cabinets were used, there was a lot of
free space in them. As a matter of fact the design could
be made much more compact.
The generators have been employed at FEL Labora-
tory Duke University since 2005. From the beginning of
periodic operation the system has been working over
2000 hours. During this time the major problems were
connected with reliable operation of high-voltage
drivers, by this time the problems are almost eliminated.
After 2000 hours increase of voltage drop through the
thyra-tron on preionization electrode due to occurrence
of direct current was observed. In order to reduce the
tendency, a "quaziconstant" preionization must be intro-
duced with applying of low-current trigger pulse with
delay to the moment of thyratron firing not greater than
1 ms.
REFERENCES
1. S.F. Mikhailov, V. Litvinenko, M. Busch, et al. Sta-
tus of the Booster Synchrotron for Duke FEL Stor-
age Ring // Part. Acc. Conf., 2003, Portland, USA,
2003.
2. R. Sheldrake, С R. Weatherup and С.A. Pirrie.
EEV THYRATRONS FOR NLC KLYSTRON
MODULATORS. www.e2v technologies limited
2004.
3. E. Cook, B. Hickman, B. Lee, S. Hawkins, E. Gow-
er, F. Allen. Design and Testing of a Fast, 50 kV
Solid-State Kicker Pulser // Proc. 2002 Internation-
al Power Modulator Conference. Hollywood, USA,
2002, p.106.
4. H. Singh, Harry L. Moore. Pulsed Power Switching
Technology // Proc. 2002 International Power
Modulator Conference. Hollywood, USA, 2002,
p.23.
5. V.D. Bochkov, Yu.D. Korolev. Pulsed gas-dischar-
ge switching devices // "Encyclopedia of Low Tem-
perature Plasma"/ Edited by V.E. Fortov, Moscow,
"Nauka Publishing". 2000, p.446 (in Russian).
Статья поступила в редакцию 28.11.2007 г.
ИМПУЛЬСНЫЕ ГЕНЕРАТОРЫ С НАНОСЕКУНДНЫМИ ФРОНТАМИ НА ОСНОВЕ
ПСЕВДОИСКРОВЫХ КОММУТАТОРОВ ТПИ-ТИПА ДЛЯ КОМПЛЕКСА ЛСЭ
О.В. Анчугов, Ю.Г. Матвеев, Д.А. Шведов, В.Д. Бочков, Д.В. Бочков, В.М.Дягилев, В.Г. Ушич,
С.Ф. Михайлов, В.Г. Попов
Для комплекса ЛСЭ, созданного в университете Duke, разработаны и изготовлены пять генераторов-«ки-
керов»: генератор инжекции, генератор экстракции и генератор инжекции в большое кольцо. В качестве бы-
стрых коммутаторов использованы тиратроны ТПИ-типа, называемые также pseudospark switches − PSS. От-
сутствие накаливаемого катода позволяет ТПИ обеспечить в режимах с килоамперными пиковыми токами
большие, чем классическим тиратронам, сроки службы, уменьшенное время включения и субнаносе-
кундный джиттер. Представлены результаты эксплуатации импульсных генераторов в течение более 1,5 лет.
ІМПУЛЬСНІ ГЕНЕРАТОРИ З НАНОСЕКУНДНИМИ ФРОНТАМИ НА ОСНОВІ
ПСЕВДОІСКРОВИХ КОМУТАТОРІВ ТПІ-ТИПУ ДЛЯ КОМПЛЕКСУ ЛСЕ
О.В. Анчугов, Ю.Г. Матвеєв, Д.А. Шведов, В.Д. Бочков, Д.В. Бочков, В.М.Дягилєв, В.Г. Ушич,
С.Ф.Михайлов, В.Г. Попов
Для комплексу ЛСЕ, створеного в університеті Duke, розроблено і виготовлено п’ять генерато-
рів-"кікерів": генератор інжекції, генератор екстракції і генератор інжекції у велике кільце. Як швидкі
комутатори використано тиратрони ТПІ-типу, які називаються також pseudospark swіtches − PSS. Відсут-
ність розжарюваного катоду дозволяє ТПІ забезпечити в режимах з кілоамперними піковими струмами
більші, ніж класичним тиратронам, терміни служби, зменшений час включення і субнаносекундний
джиттер. Представлено результати експлуатації імпульсних генераторів на протязі більше 1,5 року.
____________________________________________________________
PROBLEMS OF ATOMIC SCIENCE AND TECHNOLOGY. 2008. № 5.
Series: Nuclear Physics Investigations (50), p.60-63.
63
|
| id | nasplib_isofts_kiev_ua-123456789-111483 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 1562-6016 |
| language | English |
| last_indexed | 2025-12-07T18:16:20Z |
| publishDate | 2008 |
| publisher | Національний науковий центр «Харківський фізико-технічний інститут» НАН України |
| record_format | dspace |
| spelling | Anchugov, O.V. Matveev, Y.G. Shvedov, D.A. Bochkov, V.D. Bochkov, D.V. Dyagilev, V.M. Ushich, V.G. Mikhailov, S.F. Popov, V.G. 2017-01-10T12:54:47Z 2017-01-10T12:54:47Z 2008 Pulse generators with nanosecond leading edge duration based on TPI-type pseudospark switches for FEL complex / O.V. Anchugov, Y.G. Matveev, D.A. Shvedov, V.D. Bochkov, D.V. Bochkov, V.M. Dyagilev, V.G. Ushich, S.F. Mikhailov, V.G. Popov // Вопросы атомной науки и техники. — 2008. — № 5. — С. 60-63. — Бібліогр.: 5 назв. — англ. 1562-6016 PACS 84.30.Ng https://nasplib.isofts.kiev.ua/handle/123456789/111483 For FEL (Free Electron Laser) complex used in Duke University, pulse generators (kickers) of Injection, Extraction and Generator of injection into a big ring are developed and built. As fast switches TPI-type thyratrons (PSS - pseudospark switches) are employed. The thyratrons can be considered as an alternative to well-known switches, including hot cathode hydrogen thyratrons and up-to-date power solid state switches, whereas being more compact and cost-effective. Absence of hot cathode provides for turn-on time of the TPI about 3…5 ns in modes with thousands-amperes peak currents and sub-nanosecond jitter. The results of over 1.5 years of the pulse generators service are presented. Для комплексу ЛСЕ, створеного в університеті Duke, розроблено і виготовлено п’ять генераторів-"кікерів": генератор інжекції, генератор екстракції і генератор інжекції у велике кільце. Як швидкі комутатори використано тиратрони ТПІ-типу, які називаються також pseudospark swіtches - PSS. Відсутність розжарюваного катоду дозволяє ТПІ забезпечити в режимах з кілоамперними піковими струмами більші, ніж класичним тиратронам, терміни служби, зменшений час включення і субнаносекундний джиттер. Представлено результати експлуатації імпульсних генераторів на протязі більше 1,5 року. Для комплекса ЛСЭ, созданного в университете Duke, разработаны и изготовлены пять генераторов-«кикеров»: генератор инжекции, генератор экстракции и генератор инжекции в большое кольцо. В качестве быстрых коммутаторов использованы тиратроны ТПИ-типа, называемые также pseudospark switches - PSS. Отсутствие накаливаемого катода позволяет ТПИ обеспечить в режимах с килоамперными пиковыми токами большие, чем классическим тиратронам, сроки службы, уменьшенное время включения и субнаносекундный джиттер. Представлены результаты эксплуатации импульсных генераторов в течение более 1,5 лет. en Національний науковий центр «Харківський фізико-технічний інститут» НАН України Вопросы атомной науки и техники Физика и техника ускорителей Pulse generators with nanosecond leading edge duration based on TPI-type pseudospark switches for FEL complex Імпульсні генератори з наносекундними фронтами на основі псевдоіскрових комутаторів ТПІ-типу для комплексу ЛСЕ Импульсные генераторы с наносекундными фронтами на основе псевдоискровых коммутаторов ТПИ-типа для комплекса ЛСЭ Article published earlier |
| spellingShingle | Pulse generators with nanosecond leading edge duration based on TPI-type pseudospark switches for FEL complex Anchugov, O.V. Matveev, Y.G. Shvedov, D.A. Bochkov, V.D. Bochkov, D.V. Dyagilev, V.M. Ushich, V.G. Mikhailov, S.F. Popov, V.G. Физика и техника ускорителей |
| title | Pulse generators with nanosecond leading edge duration based on TPI-type pseudospark switches for FEL complex |
| title_alt | Імпульсні генератори з наносекундними фронтами на основі псевдоіскрових комутаторів ТПІ-типу для комплексу ЛСЕ Импульсные генераторы с наносекундными фронтами на основе псевдоискровых коммутаторов ТПИ-типа для комплекса ЛСЭ |
| title_full | Pulse generators with nanosecond leading edge duration based on TPI-type pseudospark switches for FEL complex |
| title_fullStr | Pulse generators with nanosecond leading edge duration based on TPI-type pseudospark switches for FEL complex |
| title_full_unstemmed | Pulse generators with nanosecond leading edge duration based on TPI-type pseudospark switches for FEL complex |
| title_short | Pulse generators with nanosecond leading edge duration based on TPI-type pseudospark switches for FEL complex |
| title_sort | pulse generators with nanosecond leading edge duration based on tpi-type pseudospark switches for fel complex |
| topic | Физика и техника ускорителей |
| topic_facet | Физика и техника ускорителей |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/111483 |
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