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CERN Document Server 10 záznamov nájdených  Hľadanie trvalo 0.89 sekúnd. 
1.
Modern signal processing techniques for efficient transverse feedback systems operation in hadron accelerators / Kotzian, Gerd (CERN) ; Buffat, Xavier (CERN) ; Komppula, Jani (CERN) ; Stopjakova, Viera (Bratislava, Slovak Tech. U.) ; Valuch, Daniel (CERN ; Bratislava, Slovak Tech. U.)
Transverse feedback systems are essential for stable operation of all hadron accelerators with high intensity beams. An important component of such a system is a powerful digital signal processing unit. [...]
2025 - 17 p. - Published in : Phys. Rev. Accel. Beams 28 (2025) 102801 Fulltext: PDF;
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2.
Optimisation of the ISIS Proton Synchrotron Experimental Damping System / Pertica, Alex (Rutherford) ; Komppula, Jani (CERN) ; Posthuma de Boer, David (Rutherford) ; Williamson, Robert (Rutherford)
The ISIS Neutron and Muon Source, located in the UK, consists of a H⁻ linear accelerator, a rapid cycling proton synchrotron and two extraction lines delivering protons onto heavy metal targets. One of the limiting factors for achieving higher intensities in the accelerator is the head-tail instability present in the synchrotron, around 2ms after injection. [...]
2019 - 5 p. - Published in : 10.18429/JACoW-IBIC2019-MOPP031 Fulltext: PDF;
In : 8th International Beam Instrumentation Conference (IBIC 2019), Malmo, Sweden, 8 - 12 Sep 2019, pp.MOPP031
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3.
Beam-induced heat loads on the LHC arc beam screens with different beam and machine configurations: experiments and comparison against simulations / Iadarola, Giovanni (CERN) ; Skripka, Galina (Joint Institute for Nuclear Research (RU)) ; Albert, Markus (CERN) ; Amorim, David (Universite Grenoble-Alpes (FR)) ; Andujar, Oscar (CERN) ; Antipov, Sergey (CERN) ; Arduini, Gianluigi (CERN) ; Argyropoulos, Theodoros (CERN) ; Bradu, Benjamin (CERN) ; Bartosik, Hannes (CERN) et al.
Electron cloud (e-cloud) effects are among the main performance limitations for the operation of the Large Hadron Collider (LHC) with 25 ns bunch spacing. [...]
CERN-ACC-NOTE-2019-0057. - 2019. - 50 p.
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4.
Emittance growth in collision with optimised ADT settings (MD3291) / Buffat, Xavier (CERN) ; Furuseth, Sondre (EPFL - Ecole Polytechnique Federale Lausanne (CH)) ; Valuch, Daniel (CERN) ; Soderen, Martin (CERN) ; Komppula, Jani Paavo Olavi
A short end of fill experiment, aiming at evaluating the variation of the emittance growth rate on operational beams in collision when reducing the bandwidth of the transverse damper, is described in this note [...]
CERN-ACC-NOTE-2019-0028. - 2019. - 6 p.
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5.
Noise studies with new ADT pickups (MD4143) / Buffat, Xavier (CERN) ; Albert, Markus (CERN) ; Amorim, David (Universite Grenoble-Alpes (FR)) ; Antipov, Sergey (CERN) ; Crockford, Guy (CERN) ; Furuseth, Sondre (EPFL - Ecole Polytechnique Federale Lausanne (CH)) ; Komppula, Jani Paavo Olavi ; Kotzian, Gerd (CERN) ; Mounet, Nicolas (CERN) ; Oeftiger, Adrian (GSI - Helmholtzzentrum fur Schwerionenforschung GmbH (DE)) et al.
An experiment aiming at characterizing the performance of a new engineering prototype for the ADT pickup readout electronics with a low noise floor from the point of view of beam stability and emittance growth in collision is described in this note [...]
CERN-ACC-NOTE-2019-0026. - 2019. - 12 p.
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6.
Effect of Crab cavity HOMs on the coupled-bunch stability of HL-LHC / Antipov, Sergey (CERN) ; Biancacci, Nicolo (CERN) ; Komppula, Jani Paavo Olavi ; Metral, Elias (CERN) ; Salvant, Benoit (CERN) ; Burov, Alexey (Fermi National Accelerator Lab. (US))
High frequency High Order Modes can significantly affect the coupled-bunch stability in a circular accelerator. [...]
CERN-ACC-NOTE-2019-0009. - 2019.
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7.
MD4036: New ADT signal processing for large tune acceptance / Komppula, Jani Paavo Olavi ; Buffat, Xavier (CERN) ; Kotzian, Gerd (CERN) ; Li, Kevin Shing Bruce (CERN) ; Valuch, Daniel (CERN)
Transverse feedback system (ADT) performance can be optimized with digital FIR filters [...]
CERN-ACC-NOTE-2019-0008. - 2019. - 20 p.
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8.
Transverse Feedback System for the CERN FCC-hh Collider / Höfle, Wolfgang (CERN) ; Komppula, Jani (CERN) ; Kotzian, Gerd (CERN) ; Li, Kevin (CERN) ; Valuch, Daniel (CERN)
For the future hadron Collider (FCC-hh) being studied at CERN a strong transverse feedback system is required to damp coupled bunch instabilities. This system is also planned to be used for injection damping. [...]
CERN-ACC-2018-171.- 2018 - 4 p. - Published in : 10.18429/JACoW-IPAC2018-WEPAF072 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPAF072
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9.
Studies on potential use and needs of a wideband feedback system for the HL-LHC / Li, Kevin Shing Bruce (CERN) ; Arduini, Gianluigi (CERN) ; Hofle, Wolfgang (CERN) ; Iadarola, Giovanni (CERN) ; Komppula, Jani Paavo Olavi (CERN) ; Metral, Elias (CERN) ; Tomas Garcia, Rogelio (CERN)
Transverse feedback systems are one of the crucial and fundamental devices needed in high brightness proton synchrotrons to ensure a reliable and stable operation. [...]
CERN-ACC-NOTE-2018-0058. - 2018. - 16 p.
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10.
Simulation Tools for the Design and Performance Evaluation of Transverse Feedback Systems / Komppula, Jani (CERN) ; Hofle, Wolfgang (CERN) ; Li, Kevin (CERN)
Transverse feedback systems are used in synchrotrons and storage rings to damp injection oscillations and suppress transverse instabilities. Especially instabilities driven by high intensity beams in future circular colliders such as the FCC set challenging requirements for transverse feedback systems. [...]
CERN-ACC-2017-274.- 2017 - 4 p. - Published in : 10.18429/JACoW-IPAC2017-TUPIK091 Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.TUPIK091
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