High frequency/high voltage solid state body power supplies for CPD gyrotrons

Bonicelli, T.; Claesen, R.; Coletti, A.; Mondino, P.L.; Pretelli, M.; Santinelli, M.; Sita, L.; Taddia, Giuseppe

doi:10.1016/s0920-3796(03)00104-2

Cited by 10 publications

(4 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The length of the transmission line will be ∼150 m. The 24 gyrotrons are placed on the second floor of the RF building to be built adjacent to the assembly hall of ITER. The main power supplies are placed on the ground floor, and the body power supplies [17] are placed on the first floor. For the purpose of NTM suppression, power modulation up to 5 kHz has been proposed, since the modulated power is more effective by driving current only in the O-point of the island, which is expected to rotate up to 3 kHz.…”

Section: Ec Handcd System On Itermentioning

confidence: 99%

Progress of high power 170 GHz gyrotron in JAEA

Sakamoto¹,

Kasugai²,

Kajiwara³

et al. 2009

Nucl. Fusion

View full text Add to dashboard Cite

Recent progress on the high power gyrotron development in JAEA is presented. The gyrotron is featured to have a triode-type magnetron injection gun, a cylindrical resonator working at 170 GHz with TE31,8 mode, a water-cooled diamond window and a depressed collector. After the demonstration of the ITER basic performance, the gyrotron has been operated for 3 years, and recorded ∼200 GJ of total output energy. Next, a gyrotron which oscillates in higher order resonator mode, TE31,12, is designed and fabricated to study the long pulse oscillation at greater than 1 MW. In parallel, feasibility studies of a CW-power modulation for neoclassical tearing mode stabilization, a dual frequency gyrotron and a rapid frequency control are carried out. It is shown that these gyrotrons will be available with current technology.

show abstract

Section: Ec Handcd System On Itermentioning

confidence: 99%

Progress of high power 170 GHz gyrotron in JAEA

Sakamoto¹,

Kasugai²,

Kajiwara³

et al. 2009

Nucl. Fusion

View full text Add to dashboard Cite

show abstract

“…The second, low-power (due to close to zero current of reflected electrons) HVPS has the voltage U D . This, HVPS operating on a mainly capacitive load and also capable of modulating output power up to frequencies of, typically, several kHz [13]. Thus, the CPD collector system allows us to increase the output efficiency, to reduce the energy consumption and the dimensions of the main power supply, to simplify the protection system, and to increase the possibilities of controlling the gyrotron oscillation regime by using a low-power HVPS.…”

Section: The Experimental Tests Of the Second-harmonic Cpd Gyrotronmentioning

confidence: 99%

A High-Efficiency Second-Harmonic Gyrotron with a Depressed Collector

Морозкин

Glyavin

Денисов

et al. 2008

Int J Infrared Milli Waves

View full text Add to dashboard Cite

The gyrotron with an electrically insulated collector has been manufactured and tested. The 60% output efficiency is obtained for the Collector Potential Depression (CPD) operation regime. The results of the numerical simulation of the electron energy spectrum in the collector region of the second-harmonic technological 24 GHz gyrotron are presented. It is shown, that the minimal electron beam energy is about 20% of the initial value and that the gyrotron cavity should be expanded to achieve the highest output efficiency of the gyrotron with energy recovery. The highest experimental decelerating voltage is in good agreement with the calculation of the electron energy spectrum.

show abstract

“…The BPS for the EC TF is based on a fully solid state, IGBT based, design which replaces the traditional power vacuum tubes solutions used for this kind of application. This novel scheme [10] provides higher reliability, at lower investment and maintenance costs. The BPS for Lausanne, Fig.…”

Section: Body Power Supply For the Ec Test Facilitymentioning

confidence: 99%