LINAC2018 - List of Keywords (power-supply)

Paper	Title	Other Keywords	Page
MOPO041	Performance Test Results of Magnet Power Supply	controls, FPGA, interface, experiment	118
	K.-H. Park, J.H. Han, S.-H. Jeong, Y.G. Jung, D.E. Kim, M.J. Kim, H.-G. Lee, S.B. Lee, B.G. Oh, H.S. Suh PAL, Pohang, Kyungbuk, Republic of Korea
	A high stable magnet power supply (MPS) was developed, which was a bipolar type with 200A of the output current at the 40V of output voltage. The MPS has been implemented by the digital signal processing technology using the DSP, FPGA, ADCs and so on. The output current stability of the MPS showed about 6ppm peak-to-peak in a short term experiment at 200A of its full output current. The long term stability was shown in 15 ppm peak-to-peak for 10 hours at 200A. And the others experimental results about the MPS were shown in this paper.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-MOPO041
About •	paper received ※ 31 August 2018 paper accepted ※ 19 September 2018 issue date ※ 18 January 2019
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOPO116	Study on the Control Technology of Large-load Time Constant Accelerator Magnet Power Supply	controls, simulation, collider, superconducting-magnet	239
	X. Wang, F. Long IHEP, Beijing, People’s Republic of China
	With the increasing application of power supply to industrial system, digital control system has become the mainstream of modern industrial control system. The wide application of digital control system has also led to the rapid development of digital controller. In the field of accelerator magnet power supply, the adoption of digital closed-loop control has become a trend in recent years. Due to the system’s tracking and regulation characteristics, the output current will slowly track the change of the given value in the course of the given current gradually rising. When the system reaches steady state, the disturbance of the system requires the regulator to adjust at a faster rate to correct the impact of the disturbance on the system. Today’s digital power supply control method mainly reflected in when load time constant is large, interference or load change, the power output is prone to overshoot or adjust the time is long, so the tracking and adjustment features cannot be met simultaneously. Therefore, this paper will study the power supply digital control technology for large - load time constant and the independent control method of tracking and regulating.
	Poster MOPO116 [0.307 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-MOPO116
About •	paper received ※ 21 August 2018 paper accepted ※ 31 October 2018 issue date ※ 18 January 2019
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPO007	FRIB Fast Machine Protection System: Chopper Monitor System Design	FPGA, controls, machine-protect, high-voltage	336
	Z. Li, D. Chabot, S. Cogan, S.M. Lidia, R.C. Webber FRIB, East Lansing, USA
	Funding: Work supported by Work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661. The Facility for Rare Isotope Beams tunes the beam power from 0 to 400KW by chopping the beam current with a beam chopper in the Low Energy Beam Transport. A chopper monitoring system is employed to verify proper chopper operation to avoid delivery of undesired high-powered beam and to inhibit beam for machine protection purposes. The system monitors the incoming beam gate time structure, the chopper switch high voltage pulses, the chopper electrode charge/discharge currents, and the status of machine protection system. It is designed to switch off the beam within tens of nanoseconds of a detected fault. Chal-lenges include a dynamic beam gate pulse structure with pulse lengths as short as 0.6 µs and high voltage power supply current pulses of ~25 ns. A high speed "integrate and hold circuit with reset", Field Program-mable Gate Array based digital control circuit and high speed ADC circuit were developed to fulfil the re-quired functions. Design approach, simulation, and test results with the beam are the focus of this paper.
	Slides TUPO007 [1.082 MB]
	Poster TUPO007 [1.321 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-TUPO007
About •	paper received ※ 12 September 2018 paper accepted ※ 19 September 2018 issue date ※ 18 January 2019
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WE1A06	Pulse-to-pulse Beam Modulation for 4 Storage Rings with 64 Pulsed Magnets	controls, positron, electron, linac	609
	Y. Enomoto, K. Furukawa, T. Kamitani, F. Miyahara, T. Natsui, M. Satoh, K. Yokoyama, M. Yoshida KEK, Ibaraki, Japan H.S. Saotome Kanto Information Service (KIS), Accelerator Group, Ibaraki, Japan S. Ushimoto Mitsubishi Electric System & Service Co., Ltd, Tsukuba, Japan
	The KEK injector linac has delivered electrons and positrons for particle physics and photon science experiments for more than 30 years. It is planned to inject electron and positron beams with energies from 2.5 GeV to 7 GeV pulse-by-pulse at 50 Hz into the dual ring SuperKEKB collider and two light source storage rings. As the beam quality requirement from SuperKEKB is demanding, the beam orbit and optics conditions have to be maintained precisely. To that end 64 newly designed pulsed magnets were installed. Quadrupole magnets with the inductance of 1 mH are driven by power supplies with pulses up to 330 A and 0.5 ms, which recover the energy stored in coils up to 65%. Orbit corrector magnets with the inductance of 3 mH are driven with bipolar pulsed power supplies up to 10 A. Those power supplies are controlled under the event-based synchronized controls and monitored pulse-by-pulse, and are confirmed to have the stability over weeks within 0.1%. The details of the design and the operational performance will be reported.
	Slides WE1A06 [6.694 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-WE1A06
About •	paper received ※ 11 September 2018 paper accepted ※ 19 September 2018 issue date ※ 18 January 2019
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPO080	Design Validation of a Chopping and Deflecting System for the High Current Injector at IUAC	experiment, vacuum, diagnostics, simulation	869
	S. Kedia, R. Ahuja, R. Kumar, R. Mehta IUAC, New Delhi, India
	A chopping and deflecting system has been designed and developed to provide the chopped beam with various repetition rates at the IUAC experimental facilities. It consists of four pairs of deflecting plates with increasing gap from 15 mm to 21 mm to maximize the effective electric field, preserve the beam emittance and to maximize the transmission efficiency within the same voltage conditions. The design of CDS has been validated with various simulation codes like CST MWS, Solid Works, Python and TRACE 3D. The deflecting plates have been fabricated, and assembled with in the design accuracy of 100 microns. A vacuum chamber has been designed and fabricated to incorporate the deflector plate assembly. The CDS unit has been installed in the Low Energy Ion Beam Facility at the IUAC to validate the design value of ion beam deflection. A slit has been installed to cut the deflected charge particles. Since the pulse power electronics required for chopping is presently under design we have used DC voltage across the four pairs of deflecting plates and amount of deflection was measured accordingly. The design, development, and DC beam test will be discussed in the article.
	Poster THPO080 [2.037 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-THPO080
About •	paper received ※ 12 September 2018 paper accepted ※ 20 September 2018 issue date ※ 18 January 2019
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPO091	90 kW Solid-state RF Amplifier with a TE011-mode Cavity Power-combiner at 476 MHz	cavity, controls, FEL, electron	889
	Y. Otake, T. Asaka, T. Inagaki RIKEN SPring-8 Center, Sayo-cho, Sayo-gun, Hyogo, Japan S. Aizawa, K. Nagatsuka, T. Okuyama, K. Sato, H. Yamada Nihon Koshuha Co. Ltd, Yokohama, Japan
	Solid-state RF amplifiers, which have long lifetimes and small failures, are the recent trend of reliable and stable high-power rf sources for particle accelerators. Hence, we designed a 90kW solid-state amplifier with an extreme low-loss TE011 mode cavity (Q0=100, 000) power-combiner operated at 476 MHz and a 6 us pulse width. Developing this amplifier is for replacement of an IOT rf amplifier, at the X-ray free-electron laser, SACLA. In SACLA, highly RF phase and amplitude stabilities of less than 0.02 deg. and 10^-4 in rms are necessary to stable lasing within a 10 % intensity fluctuation. The amplifier comprises a drive amplifier, a reentrant cavity rf power divider, 100 final amplifiers with a 1 kW output each and a TE011 mode cavity combiner. Water-cooling within 10 mK and a DC power supply with a noise of less than -100 dBV at 10 Hz for the amplifier is necessary to realize the previously mentioned stabilities. Based on the test results of the amplifier, the above-mentioned specifications with the extreme low-loss are promising. The amplifier also allows us to operate in pulsed and CW rfs for linacs and ring accelerators. We report the performance of the 90kW amplifier.
	Slides THPO091 [1.750 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-THPO091
About •	paper received ※ 06 September 2018 paper accepted ※ 09 October 2018 issue date ※ 18 January 2019
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPO095	Present Status of Capacitor-charging Power Supplies for Klystron Modulators in SuperKEKB Injector Linac	linac, klystron, status, controls	898
	M. Kawamura, M. Akemoto, S. Fukuda, H. Honma, S. Michizono, H. Nakajima, T. Natsui, T. Shidara KEK, Ibaraki, Japan H. Akikawa, O. Endo, K. Sato Nihon Koshuha Co. Ltd, Yokohama, Japan
	The capacitor-charging power supplies (CCPSs) for the klystron modulators have been developed from 2002 in the SuperKEKB injector linac. The specifications are that the output voltage is 43kV, the charging power is 30kJ/s, and the output voltage stability is 0.2%p-p. Being used in the old facility, their sizes are restricted in 480mm x 680 mm x 760mm. After various modifications, the 13 CCPSs in the linac have been operated with no fault since last October. The present status of the CCPSs, including the outlines, specifications, and the modifications against the faults, are described.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-THPO095
About •	paper received ※ 12 September 2018 paper accepted ※ 20 September 2018 issue date ※ 18 January 2019
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPO103	Application of Solid State Amplifiers in ADS Project at IHEP	cavity, controls, MMI, LLRF	914
	O. Xiao Institute of High Energy Physics (IHEP), People’s Republic of China Y.L. Chi, N. Gan, X. Ma, Z.S. Zhou IHEP, Beijing, People’s Republic of China
	The solid state amplifier is an important part of the RF power source system of ADS project at IHEP. Three kinds of solid state amplifier with different power and frequency have been applied. In this paper, the specifications of solid state amplifier are presented. In addition, the principle of breakdown of power modules during the high power test of coupler are analyzed.
	Poster THPO103 [0.195 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-THPO103
About •	paper received ※ 17 September 2018 paper accepted ※ 20 September 2018 issue date ※ 18 January 2019
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPO104	Development of 150.4MHz Continuous Wave Solid-state Amplifier	coupling, controls, insertion, radiation	917
	L. Zhao Nanjing University of Aeronautics and Astronautics, Jiangning, People’s Republic of China S. An, Y.J. Ke, Z. Pengjiao, L. Wenliang, B.Z. Zhou PLAI, Nanjing, People’s Republic of China
	A 150.4MHz to 155.4MHz, 300W continuous wave solid-state amplifier as an accelerator power source has been developed by us. In order to increase the lifetime of MOSFET and meet the requirements of every parameters, Drain voltage and quiescent current is set at a better point with a well-designed heat dissipation structure, we make the solid state amplifier stable in performance. Taking the microwave leakage into account, the chassis structure is optimized and designed, and the microwave absorption device is adopted to make the structure compact, protect other parts not affected by the microwave leakage. After the assembly is completed, the working parameters meet the design requirements very well. The MOSFET flange temperature and output parameters meet the design requirements.
	Poster THPO104 [1.405 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-THPO104
About •	paper received ※ 12 September 2018 paper accepted ※ 20 September 2018 issue date ※ 18 January 2019
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

MOPO041

Performance Test Results of Magnet Power Supply

controls, FPGA, interface, experiment

118

K.-H. Park, J.H. Han, S.-H. Jeong, Y.G. Jung, D.E. Kim, M.J. Kim, H.-G. Lee, S.B. Lee, B.G. Oh, H.S. Suh
PAL, Pohang, Kyungbuk, Republic of Korea

A high stable magnet power supply (MPS) was developed, which was a bipolar type with 200A of the output current at the 40V of output voltage. The MPS has been implemented by the digital signal processing technology using the DSP, FPGA, ADCs and so on. The output current stability of the MPS showed about 6ppm peak-to-peak in a short term experiment at 200A of its full output current. The long term stability was shown in 15 ppm peak-to-peak for 10 hours at 200A. And the others experimental results about the MPS were shown in this paper.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-MOPO041

About •

paper received ※ 31 August 2018 paper accepted ※ 19 September 2018 issue date ※ 18 January 2019

Export •

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

MOPO116

Study on the Control Technology of Large-load Time Constant Accelerator Magnet Power Supply

controls, simulation, collider, superconducting-magnet

239

X. Wang, F. Long
IHEP, Beijing, People’s Republic of China

With the increasing application of power supply to industrial system, digital control system has become the mainstream of modern industrial control system. The wide application of digital control system has also led to the rapid development of digital controller. In the field of accelerator magnet power supply, the adoption of digital closed-loop control has become a trend in recent years. Due to the system’s tracking and regulation characteristics, the output current will slowly track the change of the given value in the course of the given current gradually rising. When the system reaches steady state, the disturbance of the system requires the regulator to adjust at a faster rate to correct the impact of the disturbance on the system. Today’s digital power supply control method mainly reflected in when load time constant is large, interference or load change, the power output is prone to overshoot or adjust the time is long, so the tracking and adjustment features cannot be met simultaneously. Therefore, this paper will study the power supply digital control technology for large - load time constant and the independent control method of tracking and regulating.

Poster MOPO116 [0.307 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-MOPO116

About •

paper received ※ 21 August 2018 paper accepted ※ 31 October 2018 issue date ※ 18 January 2019

Export •

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

TUPO007

FRIB Fast Machine Protection System: Chopper Monitor System Design

FPGA, controls, machine-protect, high-voltage

336

Z. Li, D. Chabot, S. Cogan, S.M. Lidia, R.C. Webber
FRIB, East Lansing, USA

Funding: Work supported by Work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661.
The Facility for Rare Isotope Beams tunes the beam power from 0 to 400KW by chopping the beam current with a beam chopper in the Low Energy Beam Transport. A chopper monitoring system is employed to verify proper chopper operation to avoid delivery of undesired high-powered beam and to inhibit beam for machine protection purposes. The system monitors the incoming beam gate time structure, the chopper switch high voltage pulses, the chopper electrode charge/discharge currents, and the status of machine protection system. It is designed to switch off the beam within tens of nanoseconds of a detected fault. Chal-lenges include a dynamic beam gate pulse structure with pulse lengths as short as 0.6 µs and high voltage power supply current pulses of ~25 ns. A high speed "integrate and hold circuit with reset", Field Program-mable Gate Array based digital control circuit and high speed ADC circuit were developed to fulfil the re-quired functions. Design approach, simulation, and test results with the beam are the focus of this paper.

Slides TUPO007 [1.082 MB]

Poster TUPO007 [1.321 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-TUPO007

About •

paper received ※ 12 September 2018 paper accepted ※ 19 September 2018 issue date ※ 18 January 2019

Export •

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

WE1A06

Pulse-to-pulse Beam Modulation for 4 Storage Rings with 64 Pulsed Magnets

controls, positron, electron, linac

609

Y. Enomoto, K. Furukawa, T. Kamitani, F. Miyahara, T. Natsui, M. Satoh, K. Yokoyama, M. Yoshida
KEK, Ibaraki, Japan
H.S. Saotome
Kanto Information Service (KIS), Accelerator Group, Ibaraki, Japan
S. Ushimoto
Mitsubishi Electric System & Service Co., Ltd, Tsukuba, Japan

The KEK injector linac has delivered electrons and positrons for particle physics and photon science experiments for more than 30 years. It is planned to inject electron and positron beams with energies from 2.5 GeV to 7 GeV pulse-by-pulse at 50 Hz into the dual ring SuperKEKB collider and two light source storage rings. As the beam quality requirement from SuperKEKB is demanding, the beam orbit and optics conditions have to be maintained precisely. To that end 64 newly designed pulsed magnets were installed. Quadrupole magnets with the inductance of 1 mH are driven by power supplies with pulses up to 330 A and 0.5 ms, which recover the energy stored in coils up to 65%. Orbit corrector magnets with the inductance of 3 mH are driven with bipolar pulsed power supplies up to 10 A. Those power supplies are controlled under the event-based synchronized controls and monitored pulse-by-pulse, and are confirmed to have the stability over weeks within 0.1%. The details of the design and the operational performance will be reported.

Slides WE1A06 [6.694 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-WE1A06

About •

paper received ※ 11 September 2018 paper accepted ※ 19 September 2018 issue date ※ 18 January 2019

Export •

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

THPO080

Design Validation of a Chopping and Deflecting System for the High Current Injector at IUAC

experiment, vacuum, diagnostics, simulation

869

S. Kedia, R. Ahuja, R. Kumar, R. Mehta
IUAC, New Delhi, India

A chopping and deflecting system has been designed and developed to provide the chopped beam with various repetition rates at the IUAC experimental facilities. It consists of four pairs of deflecting plates with increasing gap from 15 mm to 21 mm to maximize the effective electric field, preserve the beam emittance and to maximize the transmission efficiency within the same voltage conditions. The design of CDS has been validated with various simulation codes like CST MWS, Solid Works, Python and TRACE 3D. The deflecting plates have been fabricated, and assembled with in the design accuracy of 100 microns. A vacuum chamber has been designed and fabricated to incorporate the deflector plate assembly. The CDS unit has been installed in the Low Energy Ion Beam Facility at the IUAC to validate the design value of ion beam deflection. A slit has been installed to cut the deflected charge particles. Since the pulse power electronics required for chopping is presently under design we have used DC voltage across the four pairs of deflecting plates and amount of deflection was measured accordingly. The design, development, and DC beam test will be discussed in the article.

Poster THPO080 [2.037 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-THPO080

About •

paper received ※ 12 September 2018 paper accepted ※ 20 September 2018 issue date ※ 18 January 2019

Export •

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

THPO091

90 kW Solid-state RF Amplifier with a TE011-mode Cavity Power-combiner at 476 MHz

cavity, controls, FEL, electron

889

Y. Otake, T. Asaka, T. Inagaki
RIKEN SPring-8 Center, Sayo-cho, Sayo-gun, Hyogo, Japan
S. Aizawa, K. Nagatsuka, T. Okuyama, K. Sato, H. Yamada
Nihon Koshuha Co. Ltd, Yokohama, Japan

Solid-state RF amplifiers, which have long lifetimes and small failures, are the recent trend of reliable and stable high-power rf sources for particle accelerators. Hence, we designed a 90kW solid-state amplifier with an extreme low-loss TE011 mode cavity (Q0=100, 000) power-combiner operated at 476 MHz and a 6 us pulse width. Developing this amplifier is for replacement of an IOT rf amplifier, at the X-ray free-electron laser, SACLA. In SACLA, highly RF phase and amplitude stabilities of less than 0.02 deg. and 10^-4 in rms are necessary to stable lasing within a 10 % intensity fluctuation. The amplifier comprises a drive amplifier, a reentrant cavity rf power divider, 100 final amplifiers with a 1 kW output each and a TE011 mode cavity combiner. Water-cooling within 10 mK and a DC power supply with a noise of less than -100 dBV at 10 Hz for the amplifier is necessary to realize the previously mentioned stabilities. Based on the test results of the amplifier, the above-mentioned specifications with the extreme low-loss are promising. The amplifier also allows us to operate in pulsed and CW rfs for linacs and ring accelerators. We report the performance of the 90kW amplifier.

Slides THPO091 [1.750 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-THPO091

About •

paper received ※ 06 September 2018 paper accepted ※ 09 October 2018 issue date ※ 18 January 2019

Export •

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

THPO095

Present Status of Capacitor-charging Power Supplies for Klystron Modulators in SuperKEKB Injector Linac

linac, klystron, status, controls

898

M. Kawamura, M. Akemoto, S. Fukuda, H. Honma, S. Michizono, H. Nakajima, T. Natsui, T. Shidara
KEK, Ibaraki, Japan
H. Akikawa, O. Endo, K. Sato
Nihon Koshuha Co. Ltd, Yokohama, Japan

The capacitor-charging power supplies (CCPSs) for the klystron modulators have been developed from 2002 in the SuperKEKB injector linac. The specifications are that the output voltage is 43kV, the charging power is 30kJ/s, and the output voltage stability is 0.2%p-p. Being used in the old facility, their sizes are restricted in 480mm x 680 mm x 760mm. After various modifications, the 13 CCPSs in the linac have been operated with no fault since last October. The present status of the CCPSs, including the outlines, specifications, and the modifications against the faults, are described.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-THPO095

About •

paper received ※ 12 September 2018 paper accepted ※ 20 September 2018 issue date ※ 18 January 2019

Export •

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

THPO103

Application of Solid State Amplifiers in ADS Project at IHEP

cavity, controls, MMI, LLRF

914

O. Xiao
Institute of High Energy Physics (IHEP), People’s Republic of China
Y.L. Chi, N. Gan, X. Ma, Z.S. Zhou
IHEP, Beijing, People’s Republic of China

The solid state amplifier is an important part of the RF power source system of ADS project at IHEP. Three kinds of solid state amplifier with different power and frequency have been applied. In this paper, the specifications of solid state amplifier are presented. In addition, the principle of breakdown of power modules during the high power test of coupler are analyzed.

Poster THPO103 [0.195 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-THPO103

About •

paper received ※ 17 September 2018 paper accepted ※ 20 September 2018 issue date ※ 18 January 2019

Export •

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

THPO104

Development of 150.4MHz Continuous Wave Solid-state Amplifier

coupling, controls, insertion, radiation

917

L. Zhao
Nanjing University of Aeronautics and Astronautics, Jiangning, People’s Republic of China
S. An, Y.J. Ke, Z. Pengjiao, L. Wenliang, B.Z. Zhou
PLAI, Nanjing, People’s Republic of China

A 150.4MHz to 155.4MHz, 300W continuous wave solid-state amplifier as an accelerator power source has been developed by us. In order to increase the lifetime of MOSFET and meet the requirements of every parameters, Drain voltage and quiescent current is set at a better point with a well-designed heat dissipation structure, we make the solid state amplifier stable in performance. Taking the microwave leakage into account, the chassis structure is optimized and designed, and the microwave absorption device is adopted to make the structure compact, protect other parts not affected by the microwave leakage. After the assembly is completed, the working parameters meet the design requirements very well. The MOSFET flange temperature and output parameters meet the design requirements.

Poster THPO104 [1.405 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-THPO104

About •

paper received ※ 12 September 2018 paper accepted ※ 20 September 2018 issue date ※ 18 January 2019

Export •

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