P.N. Burrows BDS/MDI, LCWS08 Chicago, 17/11/081 Beam-based feedback for LC ILC luminosity goal 10**34 / cm**2 / s 3000 or 6000 bunches, spacing 150 - 300ns.

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Presentation transcript:

P.N. Burrows BDS/MDI, LCWS08 Chicago, 17/11/081 Beam-based feedback for LC ILC luminosity goal 10**34 / cm**2 / s 3000 or 6000 bunches, spacing ns  DIGITAL FB approach CLIC luminosity goal 10**35 / cm**2 / s c. 100 bunches, spacing c. < 1ns  ANALOGUE FB approach

P.N. Burrows BDS/MDI, LCWS08 Chicago, 17/11/082 e- e+ IP beam-based feedback for LC

P.N. Burrows BDS/MDI, LCWS08 Chicago, 17/11/083 KickerBPM 1 Digital feedback Analogue BPM processor Drive amplifier BPM 2 BPM 3 e- FONT4 ILC prototype at KEK/ATF 3 bunches, ns spacing 1.3 GeV

P.N. Burrows BDS/MDI, LCWS08 Chicago, 17/11/084 KickerBPM 1 Digital feedback Analogue BPM processor Drive amplifier BPM 2 BPM 3 e- FONT4 ILC prototype at KEK/ATF

P.N. Burrows BDS/MDI, LCWS08 Chicago, 17/11/085 Example (1) of May 2008 Results low gain medium gain high gain

P.N. Burrows BDS/MDI, LCWS08 Chicago, 17/11/086 Example (3) of May 2008 Results

Slack = 22 ns Latency = slack = 132 ns + 8ns (1/Q) Bunch 1 Kicker pulse Bunch 2 154ns LatencySlack Latency measurement

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