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BEAM STABILITY IN SYNCHROTRONS WITH DIGITAL TRANSVERSE FEEDBACK SYSTEMS IN DEPENDENCE ON BEAM TUNES V.M. Zhabitsky Joint Institute for Nuclear Research.

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Presentation on theme: "BEAM STABILITY IN SYNCHROTRONS WITH DIGITAL TRANSVERSE FEEDBACK SYSTEMS IN DEPENDENCE ON BEAM TUNES V.M. Zhabitsky Joint Institute for Nuclear Research."— Presentation transcript:

1 BEAM STABILITY IN SYNCHROTRONS WITH DIGITAL TRANSVERSE FEEDBACK SYSTEMS IN DEPENDENCE ON BEAM TUNES V.M. Zhabitsky Joint Institute for Nuclear Research Dubna

2 DK BPM Front Electronics Digital Signal Processor Delay Amplifier Transverse Feedback System IX International Scientific Seminar in Memory of V.P. Sarantsev

3 DK BPM IX International Scientific Seminar in Memory of V.P. Sarantsev

4 IX International Scientific Seminar in Memory of V.P. Sarantsev

5 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 IX International Scientific Seminar in Memory of V.P. Sarantsev

7 BPM Front Electronics Digital Signal Processor Delay Amplifier Digital Transverse Feedback System DK IX International Scientific Seminar in Memory of V.P. Sarantsev

8 BPM Front Electronics Digital Signal Processor Delay Amplifier Digital Transverse Feedback System DK IX International Scientific Seminar in Memory of V.P. Sarantsev

9 IX International Scientific Seminar in Memory of V.P. Sarantsev9

10 IX International Scientific Seminar in Memory of V.P. Sarantsev10 TFS with Notch and FIR-1 FiltersTFS with Notch and Hilbert Filters

11 IX International Scientific Seminar in Memory of V.P. Sarantsev11 TFS with Notch and Hilbert Filters TFS with Notch and FIR-1 Filters

12 IX International Scientific Seminar in Memory of V.P. Sarantsev

13 IX International Scientific Seminar in Memory of V.P. Sarantsev

14 IX International Scientific Seminar in Memory of V.P. Sarantsev LHC Damper (CERN, JINR) V.Zhabitsky, W.Hӧfle et al. RuPAC 2010

15 LHC Damper (CERN, JINR) Single Bunch Operation Damping of Injection Errors Damper ON Damper OFF IX International Scientific Seminar in Memory of V.P. Sarantsev V.Zhabitsky, W.Hӧfle et al. RuPAC 2010

16 Feedback chain from pick-up Q 7 to kicker H 1 Feedback chain from pick-up Q 9 to kicker H IX International Scientific Seminar in Memory of V.P. Sarantsev16 LHC Damper (CERN, JINR) D n – contours for Transverse feedback system in the case of horizontal oscillations after injection (beam 1)

17 IX International Scientific Seminar in Memory of V.P. Sarantsev17 LHC Damper (CERN, JINR) D n – contours for Transverse feedback system in the case of vertical oscillations after injection (beam 2) without instability τ inst = 200 T rev

18 IX International Scientific Seminar in Memory of V.P. Sarantsev

19 0 A13 A6.5 A damper ON vertical horizontal damper always switched on at turn 2000 Beam IX 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

20 V.P. Sarantsev, I.N. Ivanov, 1991 JINR IX International Scientific Seminar in Memory of V.P. Sarantsev

21 IX International Scientific Seminar in Memory of V.P. Sarantsev


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