Zobrazeno 1 - 10
of 55
pro vyhledávání: '"Roger Ruber"'
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques, Vol. 70, no. 9, p. 1499-4210 (2022)
This article proposes a novel validated de-embedding approach to S-parameter measurement. This de-embedding approach benefits from the fully symmetric nature of the designed tapered transmission line test fixture and requires only a Through (THRU) st
Autor:
Tor Lofnes, Anirban Bhattacharyya, Vitaliy Goryashko, Lars Hermansson, Konrad Gajewski, R. Santiago Kern, Magnus Jobs, Han Li, Kjell Fransson, Roger Ruber
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 927:63-69
ESS, the European Spallation Source, will adopt a single family of double spoke cavities for accelerating the beam from the normal conducting section to the first family of the elliptical superconducting cavities. It will be the first double spoke ca
Autor:
Rolf Wedberg, Anirban Bhattacharyya, Vitaliy Goryashko, Maja Olvegård, R. Santiago Kern, K. Pepitone, Volker Ziemann, Han Li, Marek Jacewicz, A. Wiren, T. Peterson, Johan Eriksson, Kjell Fransson, E. Pehlivan, Akira Miyazaki, Tor Lofnes, Åke Jönsson, Lars Hermansson, Konrad Gajewski, Dragos Dancila, Magnus Jobs, Tord Ekelof, Rutambhara Yogi, Anders Rydberg, Roger Ruber
The FREIA Laboratory at Uppsala University focuses on superconducting technology and accelerator development. It actively supports the development of the European Spallation Source, CERN, and MAX IV, among others. FREIA has developed test facilities
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::64d24bae471e859337a4a25874153765
Autor:
Marek Jacewicz, Walter Wuensch, Sergio Calatroni, Iaroslava Profatilova, Roger Ruber, Johan Eriksson
Field emission and vacuum breakdown limit performance in many classes of electronic devices, including rf systems in particle accelerators. Although there are general explanations of both processes, a large correction factor is systematically needed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db494b2f68c60598e953b63d4ca63fd2
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-433375
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-433375
Publikováno v:
IEEE Transactions on Components, Packaging and Manufacturing Technology. 8:851-857
A compact single-stage 8-1 Gysel Combiner in planar technology for operation with 352-MHz pulses with peak output power of 10 kW has been designed, manufactured, and tested. The module has 0.2-dB insertion loss when operated at nominal power, and the
Autor:
Long Hoang Duc, Anirban Bhattacharyya, Vitaliy Goryasko, Roger Ruber, Anders Rydberg, Jorgen Olsson, Dragos Dancila
Publikováno v:
Microwave and Optical Technology Letters. 60:163-171
This paper presents the time domain characterization of high power pulsed solid state amplifiers to be used forlinear accelerator applications. The study comprises nonlinear circuit envelope simulations and time domainenvelope measurements. Measureme
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 64:3764-3771
We propose a novel method for high-precision determination of a quality factor $Q_{0}$ of a superconducting radio-frequency cavity as a function of the strength of the field excited in the cavity, the so-called $Q$ -slope. Usually, the cavity paramet
Publikováno v:
IEEE Microwave and Wireless Components Letters. 28:111-113
We present radio frequency (RF) and thermal characterization of a compact 12-way power combiner designed for operation at 352 MHz at a power level of 100 kW with 5% duty factor. The combiner is based on a reentrant cavity with 12 input doorknob coupl
This paper presents the first results of an in-house developed low-level radio frequency (LLRF) system and a 10 kW solid state power amplifier (SSPA). The design approach for the SSPA is based on eight resonant single-ended kilowatt modules combined
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c032f9eceebafe25f6e3452023e86e4
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-402616
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-402616
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 828:63-71
A e+e- collider of several TeV energy will be needed for the precision studies of any new physics discovered atthe LHC collider at CERN. One promising candidate is CLIC, a linear collider which is ...