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CERN Document Server 62 records found  1 - 10nextend  jump to record: Search took 0.53 seconds. 
1.
Measurement of emittance growth and oscillation spectrum for different damper gains (MD 9407) / Buffat, Xavier (CERN) ; Fornara, Andrea (University of Manchester (GB)) ; Giacomel, Lorenzo (CERN) ; Kostoglou, Sofia (CERN) ; Lannoy, Christophe (EPFL - Ecole Polytechnique Federale Lausanne (CH)) ; Mounet, Nicolas (CERN) ; Radoslavova, Anna Valeri (Heidelberg University (DE)) ; Sterbini, Guido (CERN) ; Valuch, Daniel (CERN)
The procedure of an experiment aiming at studying the impact of the transverse damper gain on the beam oscillation spectrum and on the emittance growth of colliding beams is described along with the corresponding results. [...]
CERN-ACC-NOTE-2024-0007. - 2024.
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2.
Non-white transverse noise in COMBIp / Pereira Cubillo, Juan Sebastián (CERN) ; Furuseth, Sondre (EPFL - Ecole Polytechnique Federale Lausanne (CH))
A non-white transverse noise generator module has been implemented in COMBIp [...]
CERN-STUDENTS-Note-2019-116. - 2019
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3.
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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4.
Beam Instabilities in Circular Particle Accelerators / Metral, Elias (CERN)
The theory of impedance-induced bunched-beam coherent instabilities is reviewed following Laclare's formalism, adding the effect of an electronic damper in the transverse plane. [...]
CERN-ACC-SLIDES-2019-0001. - 2019. - 165 p.
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5.
Landau Damping for TMCI: with vs. without Transverse Damper / Metral, Elias (CERN)
The Landau damping of the Transverse Mode-Coupling Instability (TMCI) is discussed both without and with a resistive transverse damper. [...]
CERN-ACC-NOTE-2019-0018. - 2019. - 21 p.
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6.
MD3288: Instability latency with controlled noise / Furuseth, Sondre (EPFL - Ecole Polytechnique Federale Lausanne (CH)) ; Buffat, Xavier (CERN) ; Metral, Elias (CERN) ; Valuch, Daniel (CERN) ; Salvant, Benoit (CERN) ; Amorim, David (Universite Grenoble-Alpes (FR)) ; Mounet, Nicolas (CERN) ; Soderen, Martin (CERN) ; Antipov, Sergey (CERN) ; Pieloni, Tatiana (EPFL - Ecole Polytechnique Federale Lausanne (CH)) et al.
During this MD, performed on June 14th and July 26th, 2018, the latency of single bunch instabilities was tested with an external controllable noise produced by the ADT kicker. [...]
CERN-ACC-NOTE-2019-0011. - 2019. - 29 p.
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7.
Beam Instabilities in Circular Particle Accelerators / Metral, Elias (CERN)
The theory of impedance-induced bunched-beam coherent instabilities is reviewed following Laclare's formalism, adding the effect of an electronic damper in the transverse plane. [...]
CERN-ACC-SLIDES-2018-0003. - 2018. - 164 p.
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8.
The impact of the use of alternative RF frequencies on the TMCI thresholds for HL-LHC / Li, Kevin Shing Bruce (CERN) ; Arduini, Gianluigi (CERN) ; Iadarola, Giovanni (CERN) ; Metral, Elias (CERN) ; Rumolo, Giovanni (CERN) ; Tomas Garcia, Rogelio (CERN)
Alternative scenarios for using different configurations of RF frequencies exist and are under study for the HL-LHC. [...]
CERN-ACC-NOTE-2018-0057. - 2018. - 9 p.
CERN-ACC-NOTE-2018-0057
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9.
The Ghost Train Instability (MDs 2066 and 2936) / Carver, Lee Robert (University of Liverpool (GB)) ; Alemany Fernandez, Reyes (CERN) ; Amorim, David (Centre National de la Recherche Scientifique (FR)) ; Antipov, Sergey (CERN) ; Barraud, Laurent (Centre National de la Recherche Scientifique (FR)) ; Biancacci, Nicolo (CERN) ; Buffat, Xavier (CERN) ; Crockford, Guy (CERN) ; Hemelsoet, Georges-Henry (CERN) ; Levens, Tom (CERN) et al.
This notes describes experimental studies of the octupole strength required to stabilise bunch trains at 6.5 TeV in the LHC, performed over 3 MD blocks in 2017. [...]
CERN-ACC-NOTE-2018-0013. - 2018. - 13 p.
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10.
Impact of the ADT on the beam quality with high brightness beams in collision (MD2155) / Buffat, Xavier (CERN) ; Furuseth, Sondre (EPFL - Ecole Polytechnique Federale Lausanne (CH)) ; Kostoglou, Sofia (National Technical Univ. of Athens (GR)) ; Salvachua Ferrando, Belen Maria (CERN) ; Papadopoulou, Parthena Stefania (CERN) ; Ponce, Laurette (CERN) ; Solfaroli Camillocci, Matteo (CERN) ; Suykerbuyk, Ronaldus (CERN) ; Valuch, Daniel (CERN) ; Walsh, David John (CERN) et al.
The results of an experiment aiming at determining indirectly the noise level in the LHC, isolating the contribution of the transverse damper, through their impact on the emittance of colliding high brightness bunches at 6.5 TeV in the LHC are presented..
CERN-ACC-NOTE-2018-0005. - 2018. - 12 p.
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