Conceptual Studies of Multistage Depressed Collectors for Gyrotrons PDF Download
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Author: Wu, Chuanren
Publisher: KIT Scientific Publishing
ISBN: 3731509342
Category : Technology & Engineering
Languages : en
Pages : 232
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Book Description
Author: Wu, Chuanren
Publisher: KIT Scientific Publishing
ISBN: 3731509342
Category : Technology & Engineering
Languages : en
Pages : 232
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Book Description
Author: Wilde, Fabian
Publisher: KIT Scientific Publishing
ISBN: 3731511606
Category :
Languages : en
Pages : 272
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Book Description
Magnetic confinement fusion relies on plasma heating and plasma control using gyrotron oscillators providing at megawatt power levels. The operational reliability decreases when operating at the performance limits due to increasing parasitic mode activity. This work demonstrates for the first time the automated, fast recovery of nominal gyrotron operation during a pulse by exploiting the hysteretic gyrotron behaviour after a mode switch being in use at the Wendelstein 7-X ECRH facility.
Author: Ruess, Tobias
Publisher: KIT Scientific Publishing
ISBN: 3731513099
Category :
Languages : en
Pages : 258
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Book Description
Ein Gyrotron wird in magnetisch eingeschlossenen Plasmaexperimenten für Heizung, Stromtrieb, Plasmastabilisierung und Plasmadiagnostik verwendet. In dieser Arbeit wird der erste Entwurf und Bau eines Mehrfrequenz-/Mehrzweck Pre-Prototyp Gyrotrons in koaxialer Technologie vorgestellt, das bei (136)/170/204 GHz mit einer Ausgangsleistung von 2 MW arbeitet. Dies ist der erste Schritt zum Betrieb bei Frequenzen bis zu 240 GHz unter Verwendung der Koaxialhohlraum-Gyrotrontechnologie. - A gyrotron is used in magnetically confined plasma experiments for heating, current drive, plasma stabilization and plasma diagnostics. This work presents the first design and construction of a multi-frequency / multi-purpose coaxial-cavity pre-prototype gyrotron operating at (136)/170/204 GHz with an output power of 2 MW. It is the first step towards operating frequencies up to 240 GHz using the coaxial-cavity gyrotron technology.
Author: Ruess, Sebastian
Publisher: KIT Scientific Publishing
ISBN: 3731510243
Category : Technology & Engineering
Languages : en
Pages : 190
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Book Description
Magnetic fusion is one approach to generate thermonuclear fusion power in an environmental friendly way. The Electron Cyclotron Resonance Heating is considered as the major concept for startup, heating and control of the fusion plasma. Megawatt-class gyrotrons generate the required microwave power. This work focuses on advanced key components and technologies for a DEMO relevant 2 MW gyrotron. One major focus is on the development of advanced Magnetron Injection Guns. Another focus is on the red
Author: Hofele, Julia
Publisher: KIT Scientific Publishing
ISBN: 3731513501
Category :
Languages : en
Pages : 174
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Book Description
High energy demand is one reason for high costs of carbon fibers. One option to decrease them is to use microwave heating instead of conventional heating. In this work, steps towards a microwave assisted process during the stabilization phase are presented. In-situ dielectric measurements are performed and a reaction kinetics model is setup in connection to the dielectric loss. This allows to calculate a stabilization degree and fiber temperatures leading to a basic process understanding.
Author: Ramopoulos, Vasileios
Publisher: KIT Scientific Publishing
ISBN: 3731510995
Category : Technology & Engineering
Languages : en
Pages : 162
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Book Description
Microwave-assisted alkaline hydrolysis of PET can be 20 times faster and at lower temperatures. This work presents a novel industrial microwave applicator at 2.45 GHz with homogeneous distribution to support this reaction, which allows an efficient and continuous operation. In addition, an innovative dielectric and calorimetric measurements setup is presented. Furthermore, the modelling of the reaction kinetics based on the measured dielectric parameters is presented.
Author: Marek, Alexander
Publisher: KIT Scientific Publishing
ISBN: 3731512505
Category : Technology & Engineering
Languages : en
Pages : 322
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Book Description
This work presents the development of a new sub-THz source for the generation of trains of coherent high-power ultra-short pulses at 263 GHz via passive mode-locking of two coupled helical gyro-TWTs. For the first time, it is shown that the operation of such passive mode-locked helical gyro-TWTs in the hard excitation regime is of particular importance to reach the optimal coherency of the generated pulses. This could be of particular interest for some new time-domain DNP-NMR methods.
Author: Hochberg, Martin
Publisher: KIT Scientific Publishing
ISBN: 373150958X
Category : Technology & Engineering
Languages : en
Pages : 198
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Book Description
Author: Jelonnek, John
Publisher: KIT Scientific Publishing
ISBN:
Category :
Languages : en
Pages : 122
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Book Description
Author: Jelonnek, John
Publisher: KIT Scientific Publishing
ISBN:
Category :
Languages : en
Pages : 64
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Book Description
