Autor: Cichalewski, W. - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: High power amplifiers chain nonlinearity influence on the acelerating beam stability in free electron laser (FLASH)
Autorzy:: Cichalewski, W.
Jałmużna, W.
Tematy:: wzmacniacz wysokiej mocy
klistron
AMAM
AMPM
linearyzacja
lasery na swobodnych elektronach
high power amplifiers
linearization
digital predistortion
free electron lasers; Pokaż więcej
Wydawca:: Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
Powiązania:: https://bibliotekanauki.pl/articles/397957.pdf Link otwiera się w nowym oknie
Opis:: The high power amplifiers transfer characteristics nonlinearities can have a negative influence on the overall system performance. This is also true for the TESLA superconducting cavities accelerating field parameters control systems. This Low Level Radio Frequency control systems uses microwave high power amplifiers (like 10 MW klystrons) as actuators in the mentioned feedback loops. The amplitude compression and phase deviations phenomena introduced to the control signals can reduce the feedback performance and cause electron beam energy instabilities. The transfer characteristics deviations in the Free Electron Laser in Hamburg experiment have been investigated. The outcome of this study together with the description of the developed linearization method based on the digital predistortion approach have been described in this paper. Additionally, the results from the linearization tool performance tests in the FLASH's RF systems have been placed.
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Improving Dependability of Automation for Free Electron Laser FLASH
Autorzy:: Kosęda, B.
Szmuc, T.
Cichalewski, W.
Tematy:: automation
formal methods
model checking
expert system
Prolog
flash; Pokaż więcej
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Powiązania:: https://bibliotekanauki.pl/articles/384861.pdf Link otwiera się w nowym oknie
Opis:: Free-electron laser FLASH (260-meter-long machine) is a pilot facility for the forthcoming XFEL (3 km). Along with growth of the experiment, service and maintenance are becoming so complex that certain degree of automation seems to be inevitable. The main purpose of the automation software is to facilitate operators with computer-aided supervision of several hardware/software subsystems. The efforts presented in this contribution concern elaboration of general framework for designing and development of automation software for the FLASH. The toolkit facilitates specification, implementation, testing and formal verification. The ultimate goal of the framework is to systematize the way of automation software development and to improve its dependability. At present usefulness of the tools is being evaluated by testing the automation software for single RF-power station of the FLASH.
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Multipurpose RF field vector controller for linear accelerators
Autorzy:: Jałmużna, W.
Cichalewski, W.
Szewiński, J.
Tematy:: LLRF (niski poziom częstotliwości radiowej) system
flash
LLRF (low level radio frequency) system
RF field controller
superconducting linear accelerators; Pokaż więcej
Wydawca:: Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
Powiązania:: https://bibliotekanauki.pl/articles/397922.pdf Link otwiera się w nowym oknie
Opis:: The paper describes the design and the implementation of the flexible, multipurpose RF (Radio Frequency) field Vector Controller for the linear accelerators based on the superconducting technology. The implementation is done for the FPGA (Field Programmable Gate Array) based LLRF (Low Level Radio Frequency) control systems. The full process of the requirement analysis and the library implementation is presented. It is followed by the description of the controller's applications and the results of the performance tests. The controller fulfills the requirements of the various accelerator facilities and hardware platforms and can be easily adapted for the planned experiments to decrease their cost by avoiding expensive research and development phase.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Polish national input to the 2026 update of the European Strategy for Particle Physics
Autorzy:: Kupść, A.
Derendarz, D.
Żarnecki, G.
Batozskaya, V.
Padee, A.
Wąchała, T.
Badełek, B.
Zemła, A.
Renstrom, P.
Kalinowski, A.
Poźniak, K.
Sznajder, P.
Żabiński, B.
Chrząszcz, M.
Sławińska, M.
Kutak, K.
Kucharczyk, M.
Mindur, B.
Wagner, J.
Łagoda, J.
Bocian, D.
Skrzypek, M.
Rybicki, A.
Szleper, M.
Bluj, M.
Gluza, J.
Kusina, A.
Sapeta, S.
Grebieszkow, K.
Chorowski, M.
Rolbiecki, K.
Lesiak, T.
Kaczmarska, A.
Szabelski, A.
Matyja, A.
Kornakov, G.
Stawarz, Łukasz
Misiak, M.
Zbroszczyk, H.
Cichalewski, W.
Kalinowski, J.
Dyndał, M.
Płaczek, Wiesław
Adamczyk, K.
Wiślicki, W.
Konecki, M.
Kotko, P.
Siódmok, Andrzej
Piotrowski, L. W.
Żarnecki, A. F.
Kalaczyński, P.
Malecki, P.
Piotrzkowski, K.
Szumlak, T.
Ukleja, A.
Sputowska, I.
Sobczyk, J.
Zuzel, Grzegorz
Wronka, S.
Stanecka, E.
Graczykowski, Ł.
Banaszkiewicz, T.
Opis:: The Polish high energy physics (HEP) community fully recognizes the urgent need to host at CERN a flagship project implementing a broad, long-term, and comprehensive vision of particle physics research and pursuing technological advances. Thus, we give preference and declare willingness to actively engage and participate in every aspect of the FCC project (both FCC-ee and FCC-hh), particularly accelerator development, detector construction, theoretical calculations, and physics analyses. As the e+e- Higgs Factory is the top priority for our field, the proposal to build a linear collider facility at CERN, opening up complementary physics prospects, should be considered as the second option. Polish teams declare strong support and are fully committed to contribute to the full exploitation of all aspects of the physics potential of the LHC and the HL-LHC programmes. To ensure the long-term development of particle physics, we also support the continuation of the high-field magnet research programme, as well as investigating other scenarios including, in particular, linear acceleration techniques and new acceleration technologies such as plasma acceleration, the muon collider and Gamma Factory. In addition, CERN should continue to provide support to fixed-target programmes at SPS as well as other non-collider and non-accelerator experiments at CERN. Participation in major projects conducted in and outside Europe should also be fostered. Education, communication, and outreach of particle physics are of paramount importance for the future of our field. An increased effort coordinated at the European level and resources allocated in all Member States are essential to effectively support future large-scale particle physics projects.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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