New Type of sub-THz Oscillator and Amplifier Systems Based on Helical-Type Gyro-TWTs - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook New Type of sub-THz Oscillator and Amplifier Systems Based on Helical-Type Gyro-TWTs write by Marek, Alexander. This book was released on 2023-01-26. New Type of sub-THz Oscillator and Amplifier Systems Based on Helical-Type Gyro-TWTs available in PDF, EPUB and Kindle. 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.
MultPhysics Modelling towards the Stabilization of PAN Fibers with Microwaves Based on Experimental Data
MultPhysics Modelling towards the Stabilization of PAN Fibers with Microwaves Based on Experimental Data - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook MultPhysics Modelling towards the Stabilization of PAN Fibers with Microwaves Based on Experimental Data write by Hofele, Julia. This book was released on 2024-07-10. MultPhysics Modelling towards the Stabilization of PAN Fibers with Microwaves Based on Experimental Data available in PDF, EPUB and Kindle. 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.
A First 2 MW-Class (136)/170/204 GHz Multi-Frequency Gyrotron Pre-Prototype for DEMO: Design, Construction and Key Components Verification
A First 2 MW-Class (136)/170/204 GHz Multi-Frequency Gyrotron Pre-Prototype for DEMO: Design, Construction and Key Components Verification - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook A First 2 MW-Class (136)/170/204 GHz Multi-Frequency Gyrotron Pre-Prototype for DEMO: Design, Construction and Key Components Verification write by Ruess, Tobias. This book was released on 2023-10-26. A First 2 MW-Class (136)/170/204 GHz Multi-Frequency Gyrotron Pre-Prototype for DEMO: Design, Construction and Key Components Verification available in PDF, EPUB and Kindle. 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.
Automated Mode Recovery and Electronic Stability Control for Wendelstein 7-X Gyrotrons
Automated Mode Recovery and Electronic Stability Control for Wendelstein 7-X Gyrotrons - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Automated Mode Recovery and Electronic Stability Control for Wendelstein 7-X Gyrotrons write by Wilde, Fabian. This book was released on 2024-08-07. Automated Mode Recovery and Electronic Stability Control for Wendelstein 7-X Gyrotrons available in PDF, EPUB and Kindle. 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.
Millimeter-Wave Gyrotron Traveling-Wave Tube Amplifiers
Millimeter-Wave Gyrotron Traveling-Wave Tube Amplifiers - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Millimeter-Wave Gyrotron Traveling-Wave Tube Amplifiers write by Chao-Hai Du. This book was released on 2014-05-29. Millimeter-Wave Gyrotron Traveling-Wave Tube Amplifiers available in PDF, EPUB and Kindle. A gyrotron traveling-wave amplifier (gyro-TWT) with the high-power and broad-band capabilities is considered as a turn-on key for next generation high-resolution radar. The book presents the most advanced theory, methods and physics in a gyro-TWT. The most challenging problem of instability competition has been for the first time addressed in a focused and systematic way and reported via concise states and vivid pictures. The book is likely to meet the interest of researchers and engineers in radar and microwave technology, who would like to study the gyro-TWTs and to promote its application in millimeter-wave radars. Chao-Hai Du and Pu-Kun Liu are both professors at Peking University.
