1 / 38

Feedback On Nanosecond Timescales (FONT):

Beam feedback and phase FF. Feedback On Nanosecond Timescales (FONT): Robert Apsimon, Philip Burrows, Neven Blaskovic, Douglas Bett, Glenn Christian, Michael Davis, Davide Gamba, Alexander Gerbershagen, Young Im Kim, Colin Perry, Jack Roberts John Adams Institute Oxford University.

tavita
Download Presentation

Feedback On Nanosecond Timescales (FONT):

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Beam feedback and phase FF Feedback On Nanosecond Timescales (FONT): Robert Apsimon, Philip Burrows, Neven Blaskovic, Douglas Bett, Glenn Christian, Michael Davis, Davide Gamba, Alexander Gerbershagen, Young Im Kim, Colin Perry, Jack Roberts John Adams Institute Oxford University

  2. Oxford k-contract • WP1: design of FB and control systems • 17 + 21 staff months + £58k • WP2: design of FF systems • 23 + 33 staff months + £165k • WP3: design of laserwire systems • 6 + 12 staff months + £21k • Total:46+ 66 staff months + £244k • Key:UK, CERN

  3. WP3: design of laserwire • Laser Wire Scanner for Profile Measurements on the CLIC Drive Beam - PETRA • Exploitation of LWS facility at PETRA 3 in DESY • Design a laser wire scanner system adapted to the Drive Beam requirement (2.4GeV, 20um resolution) • Implement an electro-optically driven fast scanning system by shipping out a mode-locked laser system from RHUL to DESY and validate the concept of fast scanning for Drive Beam trains as long as 140us • Laser Wire Scanner for Profile Measurements on the CLIC Main Beam – ATF2 • Exploitation of LWS facility at ATF2: Use nearby BPM and subtract beam position jitter form the LWS scans • Design of the CLIC MB Laser Wire at different beam energies along the complex (2.4GeV, 9GeV, 1.5TeV) - Study the different detection scheme and laser system implications • Fibre laser developments for cost reduction and implementation in CLIC infrastructure • In close relation with industry, follow and test the performance of fibre lasers in term of beam quality and laser power. • Test of high power fibre laser in the accelerator environment (ATF2) • Define the implementation of laser system for LWS in CLIC Complex (Drive beam and Main beam)

  4. WP1: FB and control • Simulation, design and prototyping of IP (and interface with related BDS) beam steering feedback systems for luminosity stabilisation and optimisation at CLIC. • Integration of components within Machine Detector Interface (MDI) design. • Completion of the ATF2 prototype systems as part of the ATF2 collaboration goals of 37nm beam size and nm-level beam stabilisation. • Bench testing of relevant components for CLIC prototypes, and exploration of the possibility of beam tests of prototype components at CTF3. • Provision of feedback system parameters for modeling the integrated performance of feedback and feed-forward systems in the global CLIC design.

  5. WP1: FB and control • Simulation, design and prototyping of IP (and interface with related BDS) beam steering feedback systems for luminosity stabilisation and optimisation at CLIC. • Integration of components within Machine Detector Interface (MDI) design. • Completion of the ATF2 prototype systems as part of the ATF2 collaboration goals of 37nm beam size and nm-level beam stabilisation. • Bench testing of relevant components for CLIC prototypes, and exploration of the possibility of beam tests of prototype components at CTF3. • Provision of feedback system parameters for modeling the integrated performance of feedback and feed-forward systems in the global CLIC design.

  6. WP1: FB and control • Simulation, design and prototyping of IP (and interface with related BDS) beam steering feedback systems for luminosity stabilisation and optimisation at CLIC. • Integration of components within Machine Detector Interface (MDI) design. • Completion of the ATF2 prototype systems as part of the ATF2 collaboration goals of 37nm beam size and nm-level beam stabilisation. • Bench testing of relevant components for CLIC prototypes, and exploration of the possibility of beam tests of prototype components at CTF3. • Provision of feedback system parameters for modeling the integrated performance of feedback and feed-forward systems in the global CLIC design.

  7. CLIC Final Doublet Region

  8. CLIC Final Doublet Region

  9. CLIC Final Doublet Region

  10. WP1: FB and control • Simulation, design and prototyping of IP (and interface with related BDS) beam steering feedback systems for luminosity stabilisation and optimisation at CLIC. • Integration of components within Machine Detector Interface (MDI) design. • Completion of the ATF2 prototype systems as part of the ATF2 collaboration goals of 37nm beam size and nm-level beam stabilisation. • Bench testing of relevant components for CLIC prototypes, and exploration of the possibility of beam tests of prototype components at CTF3. • Provision of feedback system parameters for modeling the integrated performance of feedback and feed-forward systems in the global CLIC design.

  11. CLIC IP FB model

  12. CLIC IP FB performance Single random seed of ground motion (Model C): beam tracked through whole CLIC complex Many seeds of ground motion, and Models A, B, C, K:

  13. IP FB documented in CDR • 3.6 Machine-Detector Interface (p. 167) • 3.8 Integrated simulations on low-emittance preservation (p. 191) • 5.12Machine-Detector Interface (p. 552) • 5.15 Real-time feedback equipment (p. 583)

  14. WP1: FB and control • Simulation, design and prototyping of IP (and interface with related BDS) beam steering feedback systems for luminosity stabilisation and optimisation at CLIC. • Integration of components within Machine Detector Interface (MDI) design. • Completion of the ATF2 prototype systems as part of the ATF2 collaboration goals of 37nm beam size and nm-level beam stabilisation. • Bench testing of relevant components for CLIC prototypes, and exploration of the possibility of beam tests of prototype components at CTF3. • Provision of feedback system parameters for modeling the integrated performance of feedback and feed-forward systems in the global CLIC design.

  15. FONT5 installation at ATF2 ATF2 extraction line 15

  16. FONT5 operation at ATF2 • Aim to stabilise beam in IP region using 2-bunch spill: • 1. Upstream FB: monitor beam at IP • 2. Feed-forward from upstream BPMs  IP kicker • 3. Local IP FB using IPBPM signal and IP kicker 16

  17. Upstream FONT5 System Analogue Front-end BPM processor FPGA-based digital processor Kicker drive amplifier Beam Strip-line kicker Stripline BPM with mover system

  18. Interaction Point FONT System Analogue Front-end BPM processor FPGA-based digital processor Kicker drive amplifier Beam • Designed in house • 12.5 cm stripline kicker • Based on ATF stripline BPMs Strip-line kicker Cavity BPM

  19. ATF2 beam stabilisation results • Upstream FB: beam stabilised at IP to • ~ 300 nm • 2. Feed-forward: beam stabilised at IP to • ~ 106 nm • 3. IP FB: beam stabilised at IP to ~ 93 nm • Getting interesting! (i.e. hard)

  20. Upstream FB (Measured at IPB) FB Off Correlation: 79% FB On Correlation: 14% FB Off Jitter: 0.35 ± 0.02 μm FB On Jitter: 0.30 ± 0.01 μm

  21. Feedforward Results FF Off Correlation: 73% FF On Correlation: 23% FF Off Jitter: 160 ± 10 nm FF On Jitter: 106 ± 10 nm

  22. IP Feedback Results FB Off Correlation: 81% FB On Correlation: -16% FB Off Jitter: 170 ± 10 nm FB On Jitter: 93 ± 4 nm

  23. WP1: FB and control • Simulation, design and prototyping of IP (and interface with related BDS) beam steering feedback systems for luminosity stabilisation and optimisation at CLIC. • Integration of components within Machine Detector Interface (MDI) design. • Completion of the ATF2 prototype systems as part of the ATF2 collaboration goals of 37nm beam size and nm-level beam stabilisation. • Bench testing of relevant components for CLIC prototypes, and exploration of the possibility of beam tests of prototype components at CTF3. • Provision of feedback system parameters for modeling the integrated performance of feedback and feed-forward systems in the global CLIC design.

  24. Future work proposal • Optimisation of the performance of ATF2 feedback systems as part of the ATF2 collaboration goals of 37nm beam size and nm-level beam stabilisation. • Optimised design of CLIC IP (and interface with related BDS) beam steering feedback systems for luminosity stabilisation and optimisation. • Integration of component designs within Machine Detector Interface (MDI) design. • Where relevant, bench testing of prototypes: drive amplifiers, signal processors, feedback boards. • Beam tests of prototype systems at ATF2 and CTF3. • With task 2.1: simulation of the integrated performance of feedback (and feed-forward) systems in the global CLIC design.

  25. Future work proposal (1) • Optimisation of the performance of ATF2 feedback systems as part of the ATF2 collaboration goals of 37nm beam size and nm-level beam stabilisation: • Tuning shifts at ATF2 (tuning tools – Rogelio et al) • Commission new IP chamber (with LAL, KNU, KEK) • Understand new C-band cavity BPMs + signal processors • Implement new BPMs into IP FB loop • Push beam stabilisation 100nm  10nm ( 1nm??)

  26. Future work proposal (2) • Optimised design of CLIC IP (and interface with related BDS) beam steering feedback systems for luminosity stabilisation and optimisation. • Integration of component designs within Machine Detector Interface (MDI) design. • More realistically-engineered design: • Radiation hardness of electronics • (evaluation of backgrounds) • Cabling + shielding • RF interference • Larger L* would require a • complete re-design

  27. Future work proposal (3) • Where relevant, bench testing of prototypes: drive amplifiers, signal processors, feedback boards. • Beam tests of prototype systems at ATF2 and CTF3. • With task 2.1: simulation of the integrated performance of feedback (and feed-forward) systems in the global CLIC design.

  28. Future proposed FB resources • Faculty: Burrows, Christian • Electronic engineer: Perry • Postdoc: Vice Bett • (working jointly on phase feed-forward) • Existing student: Blaskovic • New student: TBD

  29. WP2: drive beam phase FF • Simulation, design and prototyping of components for feed-forward systems for correcting phase instabilities in the CLIC drive beam. • Integration of components within CLIC drive beam design. • Liaison and coordination with collaborators working on related systems, in particular the phase monitors and kickers. • Development and bench testing of relevant prototypes and components, in particular for the high-power kicker drive amplifiers. • Study for possible beam tests of prototypes at CTF3.

  30. WP2: drive beam phase FF • Simulation, design and prototyping of components for feed-forward systems for correcting phase instabilities in the CLIC drive beam. • Integration of components within CLIC drive beam design. • Liaison and coordination with collaborators working on related systems, in particular the phase monitors and kickers. • Development and bench testing of relevant prototypes and components, in particular for the high-power kicker drive amplifiers. • Study for possible beam tests of prototypes at CTF3.

  31. WP2: drive beam phase FF • Simulation, design and prototyping of components for feed-forward systems for correcting phase instabilities in the CLIC drive beam. • Integration of components within CLIC drive beam design. • Liaison and coordination with collaborators working on related systems, in particular the phase monitors and kickers. • Development and bench testing of relevant prototypes and components, in particular for the high-power kicker drive amplifiers. • Study for possible beam tests of prototypes at CTF3.

  32. Phase FF documented in CDR • 4.3 Beam transport (p. 250) • 5.15 Real-time feedback equipment (p. 585)

  33. WP2: drive beam phase FF • Simulation, design and prototyping of components for feed-forward systems for correcting phase instabilities in the CLIC drive beam. • Integration of components within CLIC drive beam design. • Liaison and coordination with collaborators working on related systems, in particular the phase monitors and kickers. • Development and bench testing of relevant prototypes and components, in particular for the high-power kicker drive amplifiers. • Study for possible beam tests of prototypes at CTF3.

  34. WP2: drive beam phase FF • Simulation, design and prototyping of components for feed-forward systems for correcting phase instabilities in the CLIC drive beam. • Integration of components within CLIC drive beam design. • Liaison and coordination with collaborators working on related systems, in particular the phase monitors and kickers. • Development and bench testing of relevant prototypes and components, in particular for the high-power kicker drive amplifiers. • Study for possible beam tests of prototypes at CTF3.

  35. WP2: drive beam phase FF • Simulation, design and prototyping of components for feed-forward systems for correcting phase instabilities in the CLIC drive beam. • Integration of components within CLIC drive beam design. • Liaison and coordination with collaborators working on related systems, in particular the phase monitors and kickers. • Development and bench testing of relevant prototypes and components, in particular for the high-power kicker drive amplifiers. • Study for possible beam tests of prototypes at CTF3.

  36. Future work proposal • Develop feedback boards and amplifiers for CTF3 phase feed-forward prototype system. • Commission CTF3 prototype feed-forward system with beam. • With beam experience, optimise component design and test modified components. • Apply experience gained from CTF3 prototype to CLIC drive beam design, including performance simulations.

  37. Future proposed FF resources • Faculty: Burrows, Christian • Electronic engineer: Perry • Postdoc: Vice Bett • (working jointly on beam feed-back) • Existing students: Roberts, Gamba • New student: TBD

  38. Oxford resources (1/4/11-31/3/14) • Oxford-k CERN-kactual • Staff effort (months): 4666163 • Burrows, Christian 54 • Christian, Kim, Bett, Corner, Nevay73 • Perry 36 • PhD students (months): • Apsimon, Bett, Davis, Blaskovic 102 • Gerbershagen, Roberts, Gamba 57 • Materials + travel (k£): 0244 465

More Related