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Oxford contributions to ‘parameters+design’

Oxford contributions to ‘parameters+design’. Philip Burrows John Adams Institute Oxford University. Work packages of relevance. Integrated modelling and performance studies Feedback design Beam delivery system Machine-detector interface. FONT work programme.

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Oxford contributions to ‘parameters+design’

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  1. Oxford contributions to ‘parameters+design’ Philip Burrows John Adams Institute Oxford University P.N. Burrows CLIC Technical Workshop, CERN 3/11/11

  2. Work packages of relevance • Integrated modelling and performance studies • Feedback design • Beam delivery system • Machine-detector interface P.N. Burrows CLIC Technical Workshop, CERN 3/11/11

  3. FONT work programme • Design, prototyping and beam-testing of low-latency beam feedbacks operating on intra-train timescales • BPMs • feedback boards • drive amplifiers • kickers • Closed-loop feedback tests of prototype hardware P.N. Burrows CLIC Technical Workshop, CERN 3/11/11

  4. CLIC prototype: FONT3 at KEK/ATF Kicker BPM 1 BPM 2 BPM 3 e- Analogue BPM processor BPM resolution ~ 1um Latency ~ 23ns Drive power > +-50nm @ CLIC P.N. Burrows CLIC Technical Workshop, CERN 3/11/11

  5. FONT work programme • Design, prototyping and beam-testing of low-latency beam feedbacks operating on intra-train timescales • BPMs • feedback boards • drive amplifiers • kickers • Closed-loop feedback tests of prototype hardware • Design of CLIC IP collision feedback + MDI integration P.N. Burrows CLIC Technical Workshop, CERN 3/11/11

  6. IPFB in Final Focus region Elsner P.N. Burrows CLIC Technical Workshop, CERN 3/11/11

  7. Remaining technical issues • Engineering of real hardware optimised for tight spatial environment: BPM, kicker, cables … • Large (and spatially-varying) B-field  operation of ferrite components in kicker amplifier?! • Further studies of radiation environment for FB system: • was studied for ILC, so far preliminary for CLIC; • where to put electronics? • need to be rad hard? shielded? • RF interference: beam  FB electronics • kicker  detector P.N. Burrows CLIC Technical Workshop, CERN 3/11/11

  8. FONT work programme • Design, prototyping and beam-testing of low-latency beam feedbacks operating on intra-train timescales • BPMs • feedback boards • drive amplifiers • kickers • Closed-loop feedback tests of prototype hardware • Design of CLIC IP collision feedback + MDI integration • Beam transport / dynamics simulations P.N. Burrows CLIC Technical Workshop, CERN 3/11/11

  9. Luminosity performance with IP FBResta Lopez Simulation time structure: Example applying a single random seed of GM C P.N. Burrows CLIC Technical Workshop, CERN 3/11/11

  10. Luminosity performance with IP FBResta Lopez For noisy sites: • Model C: • Without any correction: mean L/L0train=30.52% • & High standard deviation! • With IP-FB: mean L/L0train=64.15% • std reduced by a factor 2 • Model K: • Without any correction: mean L/L0train=32.53% • & High standard deviation! • With IP-FB: mean L/L0train=67.82% • std reduced by a factor 3 P.N. Burrows CLIC Technical Workshop, CERN 3/11/11

  11. FONT work programme • Design, prototyping and beam-testing of low-latency beam feedbacks operating on intra-train timescales • BPMs • feedback boards • drive amplifiers • kickers • Closed-loop feedback tests of prototype hardware • Design of CLIC IP collision feedback + MDI integration • Beam transport / dynamics simulations • Ongoing programme at KEK/ATF2: produce 37nm beam spot and stabilise at nm level P.N. Burrows CLIC Technical Workshop, CERN 3/11/11

  12. FONT5 location ATF2 extraction line P.N. Burrows CLIC Technical Workshop, CERN 3/11/11 12

  13. FONT5 hardware • 3 BPMs and 2 kickers P.N. Burrows CLIC Technical Workshop, CERN 3/11/11

  14. P1 P2 P3 To dump K1 QD10X QF11X K2 QD12X QF13X QD14X QF15X FB board DAQ FONT5 setup P2  K1 (‘position’) P3  K2 (‘angle’) (P3  K1) (P2  K2) P.N. Burrows CLIC Technical Workshop, CERN 3/11/11 14

  15. ATF2 IP FB system Philip Burrows ATF2 project meeting 14/1/11 P.N. Burrows CLIC Technical Workshop, CERN 3/11/11 15

  16. IP FB loop New kicker IPBPM e- FONT drive amplifier IPBPM electronics FONT digital feedback P.N. Burrows CLIC Technical Workshop, CERN 3/11/11

  17. Resources • CLIC-UK agreement: 1/4/11 – 31/3/14 • 1.1 FTE/year (faculty, engineer, postdoc) • 88 kChF (materials + travel) • Continue this activity 2014-2016 • Could provide additional resources from JAI/Oxford: • RA for beam dynamics 2012-13 • add PhD student(s) from 2012 P.N. Burrows CLIC Technical Workshop, CERN 3/11/11

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