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1.
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Control of Intra-Bunch Vertical Motion in the SPS with GHz Bandwidth Feedback
/ Fox, John (SLAC) ; Bartosik, Hannes (CERN) ; Bjørsvik, Endre (CERN) ; De Santis, Stefano (LBNL, Berkeley) ; Dusatko, John (SLAC) ; Höfle, Wolfgang (CERN) ; Kotzian, Gerd (CERN) ; Li, Kevin (CERN) ; Métral, Elias (CERN) ; Rivetta, Claudio (SLAC) et al.
A GHz bandwidth vertical beam feedback system has been in development at the CERN SPS for control of unstable vertical beam motion in single bunch and bunch train configurations. We present measurements and recent studies of stable and unstable motion for intensities up to 2 × 1011 p/bunch[1]. [...]
CERN-ACC-2018-170.-
2018 - 6 p.
- Published in : (2018) , pp. WEPAL079
- Published in : J. Phys.: Conf. Ser. 1067 (2018) 072024
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPAL079
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2.
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Control of Intra-Bunch Vertical Instabilities at the SPS - Measurements and Technology Demonstration
/ Fox, John (SLAC) ; Bartosik, Hannes (CERN) ; De Santis, Stefano (LBNL, Berkeley) ; Dusatko, John (SLAC) ; Höfle, Wolfgang (CERN) ; Li, Kevin (CERN) ; Métral, Elias (CERN) ; Rivetta, Claudio (SLAC) ; Salvant, Benoit (CERN) ; Turgut, Ozhan (SLAC) et al.
We present recent measurements demonstrating control of unstable beam motion in single bunch and bunch train configurations at the SPS. The work is motivated by anticipated intensity increases from the LIU and HL-LHC upgrade programs, and has included the development of a GHz bandwidth reconfigurable 4 GS/S signal processor with wideband kickers and associated amplifiers. [...]
CERN-ACC-2017-200.-
2017 - 3 p.
- Published in : 10.18429/JACoW-IPAC2017-TUPIK119
Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.TUPIK119
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3.
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Wideband Vertical Intra-Bunch Feedback at the SPS - Technology Development, Recent Accelerator Measurements and Next Steps
/ Fox, John (SLAC) ; Bartosik, Hannes (CERN) ; De Santis, Stefano (LBNL, Berkeley) ; Dusatko, John (SLAC) ; Höfle, Wolfgang (CERN) ; Rivetta, Claudio (SLAC) ; Salvant, Benoit (CERN) ; Turgut, Ozhan (SLAC) ; Wehrle, Urs (CERN)
A wideband vertical intra-bunch feedback system is in development at the CERN SPS for use to control potential Ecloud and TMCI instabilities. The work is motivated by planned intensity increases from the LIU and HL-LHC upgrade programs. [...]
2016 - 7 p.
- Published in : 10.18429/JACoW-IBIC2015-WECLA04
Fulltext: PDF;
In : International Beam Instrumentation Conference , Melbourne, Australia, 13 - 17 Sep 2015, pp.WECLA04
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4.
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Wideband Vertical Intra-Bunch Feedback At The SPS - 2015 Results And Path Forward
/ Rivetta, Claudio (SLAC) ; De Santis, Stefano (LBL, Berkeley) ; Dusatko, John (SLAC) ; Fox, John (SLAC) ; Höfle, Wolfgang (CERN) ; Turgut, Ozhan (SLAC) ; Wehrle, U (CERN)
We present experimental measurements taken from CERN SPS machine development studies with a wideband intra-bunch feedback channel prototype. The demonstration system is a digital processing system with recently installed wideband kicker and amplifier components. [...]
CERN-ACC-2015-296.-
2015 - 3 p.
- Published in : (2015) , pp. TUAC2
Published version from JACoW: PDF; External link: JACOW
In : 6th International Particle Accelerator Conference, Richmond, VA, USA, 3 - 8 May 2015, pp.TUAC2
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5.
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Development of a 4 GS/s Intra-bunch Instability Control System for the SPS - Next Steps
/ Fox, John (SLAC) ; Cesaratto, John (SLAC) ; Dusatko, John (SLAC) ; Pollock, Kristin (SLAC) ; Rivetta, Claudio (SLAC) ; Turgut, Ozhan (SLAC) ; De Santis, Stefano (LBNL, Berkeley) ; Höfle, Wolfgang (CERN) ; Kotzian, Gerd (CERN) ; Wehrle, Urs (CERN)
We present the expanded system architecture in development for the control of intra-bunch instabilities in the SPS. Earlier efforts concentrated on validating the performance of a single-bunch demonstration processor. [...]
2014 - 3 p.
- Published in : , pp. TUPRI085
Fulltext: PDF; External link: Published version from JACoW
In : 5th International Particle Accelerator Conference, Dresden, Germany, 15 - 20 Jun 2014, pp.TUPRI085
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6.
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TE Wave Measurement and Modeling
/ Sikora, John P (Cornell U., CLASSE) ; Schwartz, Robert M (Cornell U., CLASSE) ; Sonnad, Kiran G (Cornell U., CLASSE) ; Alesini, David (Frascati) ; De Santis, Stefano (LBNL, Berkeley)
In the TE wave method, microwaves are coupled into the beam-pipe and the effect of the electron cloud on these microwaves is measured. An electron cloud (EC) density can then be calculated from this measurement. [...]
arXiv:1307.4315.-
CERN, 2013
Published version from CERN: PDF; External link: Preprint
In : ECLOUD’12: Joint INFN-CERN-EuCARD-AccNet Workshop on Electron-Cloud Effects, pp.181-188
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7.
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Electron Cloud at Low Emittance in CesrTA
/ Palmer, Mark (Cornell U., CLASSE) ; Alexander, James (Cornell U., CLASSE) ; Billing, Michael (Cornell U., CLASSE) ; Calvey, Joseph (Cornell U., CLASSE) ; Conolly, Christopher (Cornell U., CLASSE) ; Crittenden, James (Cornell U., CLASSE) ; Dobbins, John (Cornell U., CLASSE) ; Dugan, Gerald (Cornell U., CLASSE) ; Eggert, Nicholas (Cornell U., CLASSE) ; Fontes, Ernest (Cornell U., CLASSE) et al.
The Cornell Electron Storage Ring (CESR) has been reconfigured as a test accelerator (CesrTA) for a program of electron cloud (EC) research at ultra low emittance. The instrumentation in the ring has been upgraded with local diagnostics for measurement of cloud density and with improved beam diagnostics for the characterization of both the low emittance performance and the beam dynamics of high intensity bunch trains interacting with the cloud [...]
2010
External link: Published version from JACoW
In : 1st International Particle Accelerator Conference, Kyoto, Japan, 23 - 28 May 2010, pp.TUYMH02
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8.
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9.
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Coherent Synchrotron Radiation Studies at the Accelerator Test Facility
/ De Santis, Stefano (LBNL, Berkeley) ; Aryshev, Alexander (KEK, Ibaraki) ; Byrd, John (LBNL, Berkeley) ; Naito, Takashi (KEK, Ibaraki) ; Ross, Marc (SLAC) ; Urakawa, Junji (KEK, Ibaraki)
2006 - 3 p.
External link: Published version from JACoW
In : 10th European Particle Accelerator Conference, Edinburgh, UK, 26 - 30 Jun 2006, pp.2940
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10.
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Transient Beam Loading in the DIAMOND Storage Ring
/ De Santis, Stefano (LBNL, Berkeley) ; Bartolini, Riccardo (Diamond, Oxfordshire) ; Byrd, John (LBNL, Berkeley)
2006 - 3 p.
External link: Published version from JACoW
In : 10th European Particle Accelerator Conference, Edinburgh, UK, 26 - 30 Jun 2006, pp.2937
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