V.M. Zhabitsky Joint Institute for Nuclear Research Dubna
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Transcript of V.M. Zhabitsky Joint Institute for Nuclear Research Dubna
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BEAM STABILITY IN SYNCHROTRONS WITH DIGITAL TRANSVERSE FEEDBACK SYSTEMS
IN DEPENDENCE ON BEAM TUNES
V.M. ZhabitskyJoint Institute for Nuclear Research
Dubna
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2
DK
BPM
Front Electronics
Digital Signal ProcessorDelay
Amplifier
DKBPM
DKBPM
DKBPM
Transverse Feedback System
31.08.2011 IX International Scientific Seminar in Memory of V.P. Sarantsev
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3
DK
BPM
31.08.2011 IX International Scientific Seminar in Memory of V.P. Sarantsev
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IX International Scientific Seminar in Memory of V.P. Sarantsev 431.08.2011
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IX International Scientific Seminar in Memory of V.P. Sarantsev 531.08.2011
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IX International Scientific Seminar in Memory of V.P. Sarantsev 6
DK
BPM
Front Electronics
Digital Signal Processor
Delay
Amplifier
Basic Description of the Transverse Feedback System
31.08.2011
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IX International Scientific Seminar in Memory of V.P. Sarantsev 7
BPM
Front Electronics
Digital Signal Processor
Delay Amplifier
Digital Transverse Feedback System
DK
31.08.2011
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IX International Scientific Seminar in Memory of V.P. Sarantsev 8
BPM
Front Electronics
Digital Signal Processor
Delay Amplifier
Digital Transverse Feedback System
DK
31.08.2011
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IX International Scientific Seminar in Memory of V.P. Sarantsev 931.08.2011
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IX International Scientific Seminar in Memory of V.P. Sarantsev 1031.08.2011
TFS with Notch and FIR-1 FiltersTFS with Notch and Hilbert Filters
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IX International Scientific Seminar in Memory of V.P. Sarantsev 1131.08.2011
TFS with Notch and Hilbert Filters TFS with Notch and FIR-1 Filters
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IX International Scientific Seminar in Memory of V.P. Sarantsev 1231.08.2011
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IX International Scientific Seminar in Memory of V.P. Sarantsev 1331.08.201131.08.2011 13
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IX International Scientific Seminar in Memory of V.P. Sarantsev 1431.08.2011
LHC Damper (CERN, JINR)
V.Zhabitsky, W.Hӧfle et al. RuPAC 2010
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IX International Scientific Seminar in Memory of V.P. Sarantsev 15
LHC Damper (CERN, JINR)
Single Bunch Operation Damping of Injection Errors
Damper ONDamper OFF
31.08.2011
V.Zhabitsky, W.Hӧfle et al. RuPAC 2010
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IX International Scientific Seminar in Memory of V.P. Sarantsev 16
Feedback chain from pick-up Q7 to kicker H1 Feedback chain from pick-up Q9 to kicker H1
31.08.2011
LHC Damper (CERN, JINR)
Dn – contours for Transverse feedback system in the case of horizontal oscillations after injection (beam 1)
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IX International Scientific Seminar in Memory of V.P. Sarantsev 1731.08.2011
LHC Damper (CERN, JINR)
Dn – contours for Transverse feedback system in the case of vertical oscillations after injection (beam 2)
without instability τinst = 200 Trev
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IX International Scientific Seminar in Memory of V.P. Sarantsev 1831.08.2011
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0 A 13 A 6.5 A 6.5 A
damper ON
vertical
horizontal
damper always switched on at turn 2000
Beam 2
31.08.2011 19IX International Scientific Seminar in Memory of V.P. Sarantsev
LHC Performance. S. Myers (CERN). LHCC. 15 June 2011
Check filamentation without damper, with octupoles on and off
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IX International Scientific Seminar in Memory of V.P. Sarantsev 20
V.P. Sarantsev, I.N. Ivanov, 1991
JINR
31.08.2011
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IX International Scientific Seminar in Memory of V.P. Sarantsev 2131.08.2011