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FONT Planning Issues

FONT Planning Issues. Philip Burrows John Adams Institute Oxford University LCABD 2007-10 ATF / ATF2 ESA Miscellaneous. LC-ABD1 Structure. PPARC OSC. Advisory Comm. G. Blair ( Principal Investigator ) P. Burrows ( Project Manager ). WP1 D. Angal Kalinin. WP2 G. Blair. WP3

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FONT Planning Issues

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  1. FONT Planning Issues • Philip Burrows • John Adams Institute • Oxford University • LCABD 2007-10 • ATF / ATF2 • ESA • Miscellaneous P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06

  2. LC-ABD1 Structure PPARC OSC Advisory Comm. G. Blair (Principal Investigator) P. Burrows (Project Manager) WP1 D. Angal Kalinin WP2 G. Blair WP3 A. Reichold WP4 P. Burrows WP5 M. Poole Task 1.1 D. Angal Kalinin Task 2.1 G. Blair Task 3.1 A. Reichold Task 4.1 P. Burrows Task 5.1 J. Clarke Task 5.2 A. Dexter Task 4.2 S. Boogert Task 1.2 J.Jones/G.White Task 2.2 G.Doucas/A.Gillespie Task 5.3 N. Watson Task 2.3 I.Bailey Task 5.4 R.Appleby, C.Densham P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06

  3. LC-ABD2 Structure GDE Principal Investigator: Blair Project Manager: Burrows Project Coordinator: TBD Industry Liaison: TBD PPARC OSC Advisory Comm. WP1 Clarke WP2 Wolski WP3 Jones WP4 Angal Kalinin WP5 McIntosh WP6 Reichold WP7 Burrows WP8 Blair WP9 Boogert WP10 Densham Tasks Tasks Tasks Tasks Tasks Tasks Tasks Tasks P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06

  4. FONT ‘new’ resources 2007-10 P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06

  5. People • Oxford + Daresbury: • Philip Burrows • Glenn Christian • Hamid Dabiri Khah • Tony Hartin • Alexander Kalinin • Javier Resta Lopez • Colin Perry • Graduate students: • Christine Clarke (3) • Christina Swinson (2) • Ben Constance (1) • Robert Apsimon (0) P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06

  6. WP7: Main Goals 1) Prototype ILC intra-train beam feedback system + contribute engineered design to EDR 2) Study of EM backgrounds and optimisation of IP FB system design against them 3) Design + simulation of integrated global alignment, FB + luminosity tuning strategy for EDR P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06

  7. WP7: Main Goals 1) Prototype ILC intra-train beam feedback system + contribute engineered design to EDR VERY HIGH 2) Study of EM backgrounds and optimisation of IP FB system design against them HIGH/MODERATE 3) Design + simulation of integrated global alignment, FB + luminosity tuning strategy for EDR MODERATE – ‘ESSENTIAL’ P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06

  8. ILC status • RDR completed • Next phase – EDR – being planned by GDE now • - Likely to be a BDS ‘work package’ dominated by SLAC + UK • Aim for EDR completion in 2010 + hope for green light from (US) Govt. so project can start • Details will be announced at LCWS Hamburg June 07 • The GDE R&D board was asked by PPARC to comment on LCABD proposal • – GDE aims to exert tighter control on national R&D spending • We will not be allowed to work on things that are not directly ILC relevant, and agreed by GDE! P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06

  9. ATF/ATF2 schedule + goals • Until mid 2008 (?): ATF continues as now • Late 2008? Reconfigure ATF and connect to ATF2 • Early 2009?: ATF2 commissioning • ATF2 goals: • Achieve 35nm spot at ATF2 FF (2009??) • Stabilise spot to nm level (2010??) • Comments: • This schedule already slipped by 1 year; Yen tight in Japan • Took FFTB several years to achieve 70nm spots … P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06

  10. ATF/ATF2 bunch structure • 2 or 3 bunches with 300 or 150ns spacing until late 2008 • Fast kicker development work will proceed in parallel with ATF/ATF2 – completely uncorrelated with ATF2 goals • IMHO the fast extraction kicker could take longer to develop • By 2009?? or 2010?? might get 20-60 bunches w. 300ns spacing P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06

  11. FONT at ATF/ATF2 • Goal 1: Micron-level beam stability needed at ATF2 FF entrance • Goal 2: Sub-micron stability needed • -> won’t get either w/o (intra-train) beam FB + FF • (depends on bunch-bunch jitter: this is unlikely to be better with the fast kicker extraction from DR!) • Also for goal 2: they imagine IP FB using Honda IPBPM w. nm resolution • (nice, but not directly relevant for ILC FB!) P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06

  12. Default ATF/ATF2 plan • 2007/8: get FONT4 working properly (gain, delay-loop …) • - operational improvements • design upstream FONT system for ATF2: • what resolution to aim for? • 1 micron – striplines vs. sub-micron cavities? • beamline layout • angle also? x also? • feed-forward? • 2009: Commission ATF2 FONT system for goal 1/2 • 2010: 20-60 bunches at 300ns? IP FB w nm BPM? • add ‘luminosity’ signal input for fast scanning? P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06

  13. Schematic ATF2 feedback layout: 1 e- x’ y’ x y BPM Kicker BPM Kicker BPM Kicker BPM Kicker P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06

  14. Schematic ATF2 feedback layout: 2combined x-y kickers e- x’ y’ x y BPM BPM Kicker BPM BPM Kicker P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06

  15. Schematic ATF2 feedforward layout: 1 e- x’ y’ x y BPM Kicker BPM Kicker BPM Kicker BPM Kicker x’ y’ x y Damping Ring P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06

  16. Schematic ATF2 feedforward layout: 2combined x-y kickers e- x’ y’ x y BPM BPM Kicker BPM BPM Kicker x’ y’ x y Damping Ring P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06

  17. FONT bench test system • Manufacture synchronised ILC bunch-train, clocks, and trigger • Develop algorithms and program FPGA • Close loop • (Include amplifier and dummy kicker also!) Bunch Trigger 2.16 MHz Diagnostic P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06

  18. End Station A • Only guaranteed next run is July 2007 • Fighting for runs in 2008 – uphill battle • - probably get some beamtime • - long-term ESA looks dodgy • Longer term: default to use SABER and/or LCLS beam -> ESA • Need to decide: • what to do in July 2007 run? • any further requirements for beam for EM studies? P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06

  19. Beam simulations • Apart from Tony’s EM simulations these have been on the back-burner since Glen left • Need to get plugged in to ILC LET studies for EDR • - continue/improve intra-train FB simulations • - integrate intra-train and 5Hz feedbacks • - integrate BDS feedbacks • - understand relationship with upstream FBs and FFs • - global FB, tuning strategy, alignment … P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06

  20. Miscellaneous • FONT www site! • needs updating generally • meetings pages/archive • repository for PAC/EPAC papers • Journal publications! P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06

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