. . . . . . . . . . .. . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fourier Series Pulse Compression Damping Ring Kicker: another Progress Report . . . George Gollin University of Illinois at Urbana-Champaign . . . . ..
Download ReportTranscript . . . . . . . . . . .. . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fourier Series Pulse Compression Damping Ring Kicker: another Progress Report . . . George Gollin University of Illinois at Urbana-Champaign . . . . ..
. . . . . . . . . . .. . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fourier Series Pulse Compression Damping Ring Kicker: another Progress Report . . . George Gollin University of Illinois at Urbana-Champaign . . . . .. . . .. . George Gollin, Damping ring kicker report, March 9, 2005 .. . . . . . I Physics P llinois .... . .. . . . . .. . . . . . 1 . . . . . .. . . . . . . . . . . . . . . .. . . .. . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . . . . . . . . .. . . .. . . . . . . . . . . . . . . Perhaps larger (but less precise) impulse at injection, smaller (but more precise) impulse at extraction will be desirable. Small ring kicker rise, fall times can be asymmetric: • leading edge < 6 ns, trailing edge < 60 ns . . . . .. . . .. . George Gollin, Damping ring kicker report, March 9, 2005 .. . . . . . I Physics P llinois .... . .. . . . . .. . . . . . 2 . . . . . . . . . . . . . . . . . . . . . Dog bone (TESLA TDR) kicker .specs: . . . . . . . . . . . . . . . G-m (2 keV/c) • impulse: 100 G-m (3 MeV/c) ± 0.07 . . . . . . . . . . . . • residual (off) impulse: 0 ± 0.07 G-m (2 .keV/c) . . . . • rise/fall time: < 20 ns . . . . . . . . . . . . . . . .. . . . . . . . . . . . .. The specs . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . .. . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . .. Combine this. with a pulse compression system to drive a small number . . . of low-Q cavities. . . . Illinois, Fermilab, Cornell are involved. . .. . . . . .. . . .. . . . . . I Physics P llinois .... . .. . . . . .. . . . . . 3 . . . . of its . .. . . . Instead of a. pulsed kicker, construct a kicking pulse... from a sum . . . . . . . . . . . . . . Fourier components. . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . Fourier series pulse compression kicker . . . . .. . . . . . . . . . . . . .... . .. . . . . .. . . . . . . . . .. . . . .. . . . . . . . .. .. . . . . . . . . . Joe Calvey Michael Davidsaver Justin Phillips George Gollin Mike Haney Jeremy Williams . . . Univ. Illinois .. . . . . . . . . . . . . Shekhar Mishra François Ostiguy Ralph Pasquinelli Phillipe Piot John Reid Vladimir Shiltsev Nikolay Solyak Ding Sun . . . . .. . Tug Arkan Euvgene Borissov Harry Carter Brian Chase David Finley Chris Jensen Timergali Khabiboulline George Krafczyk . . . . Fermilab . . . . . . Physics P llinois . . . . . . Gerry Dugan Joe Rogers . . . . .. . Cornell . . . . . 4 . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . This Linear. . . US university-based . project. is. part of the . . . . . . . . . . .Collider R&D. effort . (LCRD/UCLC) . . . . I . . . .. . . . . . . . . . . . . . . . Participants . .. . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . .. . . . . . . . Initial studies: MeV e.-) .for . . Fermilab A0. photoinjector .beam (16 . . use . . . . . . . . . studies: . . . . . . . . . . . . . . . . 1. concept and design studies of FSPC kicker . . . . . . . . .. . . . . . 2. build a fast, simple strip line kicker 3. use the stripline kicker to study the timing/stability properties of the A0 beam 4. build a single-module pulse compression kicker 5. study its behavior at A0 6. perform more detailed studies in a higher energy, low emittance beam (ATF??) . . . . .. . . .. . George Gollin, Damping ring kicker report, March 9, 2005 .. . . . . . I Physics P llinois .... . .. . . . . .. . . . . . 5 . . . . . . . . . . .. . . . . . . . .. . . . . .. . . . . .. . . . . . .. . . . . . . Fermilab/Illinois activities . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . .... . .. . . . . .. . . . . . . . . .. . . . .. . . . . . . . . .. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . .. . . . . . . . . I . . . . . . . . . .. . . . . . .. . . . . .. . . Physics P llinois . . . . . . . . . . . . . .. . . . . . . . . . .. . . . . . . . . 6 . . . .. . . Right now: simulations and RF. engineering discussions… . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . .... . .. . . . . .. . . . . . . . . . . . . . .. . . .. . .. . . . . . George Gollin, Damping ring kicker report, March 9, 2005 .. . . . . . . . . . . . .. . . . . . . . . . . . . . . . . .. . 7 . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . .. . . . . .. . . Physics P llinois . . . . . . . . . . . . .. . . . . . . . . . I . . . . . . . …and writing it. up so it is. clearly described… . . . . .. . . . . . . . . . . . . .. .. . . . . . . . . . . . . . . . . . . . . . .. . . . .. . . . . . are calculable Start with. a. simple kicker whose properties and can . . . . . be. . . . . . . . . . . . its effects . . measured independently of on the A0 electron beam. . . . . . . . . . . . . . . . . . . . . . . . amplitude and Most important: how. well can we measure a device’s timing stability with the A0 beam? . .. . . .. . . . . . . . . . . . . . flanges beam pipe BPM beam pipe BPM BPM stainless steel pipe BPM conducting rods Fermilab just finished building this. Install next month (April, 2005). . . . . .. . . .. . George Gollin, Damping ring kicker report, March 9, 2005 .. . . . . . I Physics P llinois .... . .. . . . . .. . . . . . 8 . . . . . . . . . . . . . . . . . .. . . . . . . . …and building a stripline kicker. . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . .. . . . . . . . . . . last spring. . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. EOI submitted to A0 . . group . . . .. . . . . . . . . . . . . . . . . . . . . . . . Space in beamline will be available ~January 2005 . . . . .. . . .. . George Gollin, Damping ring kicker report, March 9, 2005 .. . . . . . I Physics P llinois .... . .. . . . . .. . . . . . 9 . . . . . . . . . . . . . .. . . . . . . . . . . . . . .. . . . . . . 16 MeV electron beam, good spot size,. emittance. . . . . . . Test it in the FNAL A0 photoinjector beam . .. . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . . . .. . . . . . . . . . . Modeling strategy is to study the consequences of: • drifts in parameter values (e.g. Q of RF cavity) • noise in RF power amplifier output signal • nonlinearities: harmonic and intermodulation distortion . . . . .. . . .. . George Gollin, Damping ring kicker report, March 9, 2005 .. . . . . . I Physics P llinois .... . .. . . . . .. . . . . . 10 . . . . . . . . . . • Waveguide • RF amplifier • Arbitrary function generator . . . .. . . . . . . . upstream: Functional units to . . .in the system, .downstream . . . . . . . . . . . • RF cavity, Q. = 25 . . . . . . . .. . . . . . .. . . . . . . . . . . . .. . . . . . . . . . . Performance modeling studies . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . A(0) (100 ± .07) Gauss-meters Desired off field integral A(t) (0 ± .07) Gauss-meters fDR / fL N 60 fRF / fDR G GN 10.25 dB or tB ±6 mm ~ ±20 ps ☺ Impeccable Karma . Physics P llinois Nothing has been optimized yet! . . . Bunch length 615 George Gollin, Damping ring kicker report, March 9, 2005 .... . .. . . . . .. . . . . . .. . . . . Desired on field integral . . . . . . . . 1300 MHz .. . .. . . .. fcutoff .. . Waveguide cutoff frequency . . . . . . 25 . . . . Q fRF / fL . . . . . MHz . . . . . 1845 . . . . . . 180 MHz . . . . .3 MHz. . 11 . . . . . . . Value . . . .. . . . RF structure Q . . RF structure center frequency . . . . . . . Symbol . . . fL . (wL ≡. 2p fL) . fDR (.wDR ≡ 2p fDR) .. fRF (wRF ≡ 2p fRF) . . . . . Damping ring bunch . . . . frequency . . . .. frequency . . . . . . . . . .. . . I . . . bunch . . . . . . . . Main linac . . Parameters in our studies . . Parameter. . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . • Q = 25 • center frequency 1845 MHz . .. . . .. . . . . .. . . . . . I Physics P llinois .... . .. . . . . .. . . . . . 12 . . . . . . . .. . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . .. . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . .. . . . . RF cavity . . . . . . . . . . . .. . . .. . . . . . . . .. . . . . . . . . . . .. . . . George Gollin, Damping ring kicker report, March 9, 2005 . . . . . . .... . .. . . . . .. . . . . . . . . .. . . . . . . . . . . . .. Kick error caused by deviations in Q for the center, head, and tail of the kicked and first two unkicked bunches. Full vertical scale corresponds to 0.07 Gauss-meters (2.1 keV/c). Physics P llinois . . . . . . . . . . . . 13 . . . . . . . .. . . . . . . . . . . I . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . . . . . . . . .. . . . .. . . . . . . . . . . . RF cavity Q error . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . .. . . . . . . . . . . .. . . . . . . . . . . . .. . . . . . . George Gollin, Damping ring kicker report, March 9, 2005 .... . .. . . . . .. . . . . . . . . .. . . . . . . . . . . . .. Kick error as a function of cavity center frequency error for kicked, first unkicked, and second unkicked bunches . Physics P llinois . . . . . . . . . . 14 . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . . . . . . . . . . . .. . . .. . . . . . . I . . . . . . . . . . . . . . RF cavity center-frequency. error . . . . . .. . . . . . . . . . . . . . . . . . . . . . .... . .. . . . . .. . . . . . . . . . .. . . . . .. . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . .. . . .. . . . . . . . . . . . . .. . . . . . . . . . .. . . . . . . . . . . . . . •80. meters long . . . •1300 MHz. cutoff Physics P llinois .. . . .. . . . . . 15 . . . . . . . . I . Waveguide: 80 meters long for the . time being .. . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . .. . . . . . . . . Maximum amplitudes: •entering ~0.016 .... . .. . . . . .. . . . . . . . . . .. . . .. . . . .. . I Physics P llinois ~0.1 . . •exiting 16 . . . . . . .. . . . . . . . . . . . . . . . Pulse compression! . . . . . . . . . . . . . . . . . . . . . .. . .. . . . . . . . . . .. . . . .. . . . . . . . . . . Waveguide compresses pulse . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . Differences between delivered kicks and an ideal impulse for waveguides that are 5 mm, 10 mm, 15 mm, 20 mm, and 25 mm too long. The peaks in the kicks have been shifted in time to align with the peak in the ideal impulse that is centered at t = 0. In addition, the delivered kicks have been rescaled to have the same magnitude as the ....... . . . ideal impulse. . .. . . .. . . . . . . . . . .. . . .. . George Gollin, Damping ring kicker report, March 9, 2005 . . . . . . . . . . . .. . . . . . . . . . . 17 . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . I Physics P llinois . . . .. . . . . .. . . . . .. . . . . . .. . . Two . contributions . . to . . problems: . . . . 1. change in flight time . down the waveguide 2. relative phases of Fourier components are misaligned #1 dominates. . . . . . . Waveguide length error . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . .. . . . . . . . .. . . . . George Gollin, Damping ring kicker report, March 9, 2005 .. . . . Effects of cutoff frequency errors. The curves represent the difference between delivered and ideal impulses as functions of time after aligning the time of the peaks and rescaling the peak amplitudes. Full scale in the plot is 100 ps. Nominal fcutoff is 1.3 GHz. Errors in cutoff frequency for individual .... . .. . . . curves are indicated on the plot. . .. . . . . . . .. . . . . . . . . . . 18 . . . . . . .. . . . . . . . . . . . . . .. . . . . . . . . Correcting for time . misalignment and change in overall pulse size helps considerably. . . . . . . . . . . . . . . . . . . .. . .. . . . . . . . . . . . . . .. . . . .. . I . . . . . Physics P llinois . . . . . . . . . . . . error Waveguide cutoff frequency . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . .. . . George Gollin, Damping ring kicker report, March 9, 2005 .. . . . . . .... . .. . . . . .. . . . . . .. . . . . . . Effects of an amplifier gain error that grows linearly with frequency. The curves represent the difference between delivered and ideal impulses as functions of time. The time region in the plot is centered on the arrival time of the kicked bunch. . . . . . . . . .. . . . . . . . . . . 19 . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . .. . . . . . . . . .. .. . . . . . . .. . . . . . . . . . . For now, look at a . linearly increasing error as a function of frequency… Physics P llinois . . . . . I Amplifier gain error. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Effects of an amplifier phase error that grows linearly with frequency. The curves represent the difference between delivered and ideal impulses as functions of time. The time region in the plot is centered on the arrival time of the kicked bunch. Full (horizontal) scale is 100 ps. The impulse functions have been shifted in time to align ....... . . . . .. . the kicking peaks at t = 0 and rescaled to agree in amplitude with the nominal kick . . .. . . . . . . . . . .. . . .. . George Gollin, Damping ring kicker report, March 9, 2005 . . Physics P llinois 20 . . . . . . . . . . . . . . . . .. . . . . Use a linearly increasing error. .as a function of frequency here too. . . . . . . . . . I . . . . . Amplifier phase error. . . . . . . . . .. . . . . . . . . . . . . . . . .. . . .. . . . . . . . .. . . . . . . . . .. . . . . . .. . . . . . . . . . . .... . .. . . . . .. . . . . . . . . . . . . .. . . .. . George Gollin, Damping ring kicker report, March 9, 2005 .. . . . . . . . . . I Physics P llinois . . . . . . . . . . . . . . . . . . . . . . 21 . . . . . . Model as flat from. 300 to 6 GHz is . . for now. Cavity . . . . . in frequency, . . . . . . -4 GHz.-1/2 . . . . insensitive to . frequencies far from center frequency… 10 . . . . . . . . . . . . . . . . . . . . . . MHz . . . . . . . .. . . . . . . . .. Amplifier noise… . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .... . .. . . . . .. . . . . . . . . . . . . .. . . . . . . .. . .. . George Gollin, Damping ring kicker report, March 9, 2005 .. . . . . . . . . . . .. . . . . . . . . . . . . . 22 . . . . . . . . . . . . . . . . . . . .. . . . . . . . I Physics P llinois . . . .. . . . . random phases. . . .. . . . . . .. . . . . . . . . . . . . . . . . . . .. . . Generate in. 300 kHz . frequency bins, . .. . . . . . . . . More. work is needed… . . . . . . . .. …amplifier noise . . . . . . . . . . . . . . . . . .. . . . . . . . . f f f .. . . . . . . . . . . . George Gollin, Damping ring kicker report, March 9, 2005 .... . .. . . . . .. . . . . . .. . . . . . f .. . . . . . . . . . .. . . . . . . Physics P llinois . . . . . . . . . . . . . .. . . . . . . . . are. done. Now working . Initial. .harmonic .distortion studies on . . . . . . . . . . intermodulation distortion . simulation. .. . . . . . . . .. . . . . . . . . . . . 23 . .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . I . . Nonlinear effects: harmonic and intermodulation . .. . . . . . distortion . . . . . . . . . . . . . . . . . b n 2 . d A , w n. 1 1 0 n 2 . . . . . . . . . . . . . . . .. . and . . .... . .. . . . . .. . . . . . . . . . . . . . . .. . . .. . . . . .. .. . . . . George Gollin, Damping ring kicker report, March 9, 2005 . . . . . . . 24 . . . . .. . . . . . . . . . . .. . . . . I Physics P llinois aA n 2 An A1 , w1 1 0 n2 . . . . . . . . . . dn d A ,w . . n 1 1. . . . . . . . An An A1 , w1 . . and . . . . . . . . . . . . . . .. . ...where n 1 . . . . . . . .. . . . .. . . . . . . .n A1. cos w1t . 1 . An cos . .nw1t 1 d . . . . . . Harmonic distortion. . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . .. . . . . . . . distortion: third-order . . Intermodulation . effects are most likely to be. the . . . . . . . . . . . most. important. Under way… . . . .. . . . . .... . .. . . . . .. . . . . . . . . . . . . . .. . . .. . George Gollin, Damping ring kicker report, March 9, 2005 .. . . . . . . . . . I Physics P llinois . . . . . . 25 . . . . . . . . .. . . . . . . . . . . . . . .. . . . . .. . . . .. . . . . . .. . . . . . . . . . Intermodulation distortion . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . .... . .. . . . . .. . . . . . . . . . .. . . .. . . . .. . . . . . . .. . . . . . . . . . . . . . . .. . . . . . . . . . . 26 . . . . . . .. . . . . . . . . . . . . . . .. . . . . . . . . I Physics P llinois . . . . . . . . . . . . . . . . . . . . . . .. . . . . .. . . . . . . . . . .. . . . . . . . . . . . . . Building a stripline kicker . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . .... . .. . . . . .. . . . . . . . . . .. . . .. . . . .. . . . . . . .. . . . . . . . . . . . . . . .. . . . . . . . . . . . . 27 . . . . . . . .. . . . . . . . . . . .. . . . . . . . . I Physics P llinois . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . . . . . . . . . .. . . . .. . . . . . . . . . . Looking inside the kicker . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . .. . . . . . . . Installation in A0: mid-April. . .. . . .. . . . . .. . . . . . I Physics P llinois .... . .. . . . . .. . . . . . 28 . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . Kicker is now . . vacuum tested, “high-potted.” . . assembled, . . . . . . . . . . . .. . .. . . . . . . . . . .. . . .. . . . . . . . . . . . . . . . . . . Baking the kicker electrodes . . . . .. . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . .... . .. . . . . .. . . . . . . . . . . . . . .. . . .. . .. . . . . . George Gollin, Damping ring kicker report, March 9, 2005 .. . . . . . . . . . . .. . . . . . . . . . . 29 . . . . . . . .. . . . . . . . . . . . . I Physics P llinois . . . . . . . . . . . . . . . . . . . . . . .. . .. . . . . . . . . . .. . . . . . .. . . . . . . . . . . . . . . . . . . . Measuring electrode positions . . . . .. . . . . . . . . . . . . . . . . . . . . .... . .. . . . . .. . . . . . . . . . .. . . .. . . . .. . . . . . . .. . . . . . . . . . . . . . . .. . . . . . . . . . . . . 30 . . . . . . . .. . . . . . . . . . . .. . . . . . . . . I Physics P llinois . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . . . . . . . . . .. . . . .. . . . . . . . . . . Machineable ceramic supports . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . .... . .. . . . . .. . . . . . . . . . .. . . .. . . . .. . . . . . . .. . . . . . . . . . . . . . . .. . . . . . . . . . . . . 31 . . . . . . . .. . . . . . . . . . . .. . . . . . . . . I Physics P llinois . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . . . . . . . . . .. . . . .. . . . . . . . . . UIUC students in A0. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . .. . . . . . . . . . . . . . . data . Our. plan is to generate simple Monte Carlo to test tools . . . . .. . before we have real data. . . . . . . . . . . . . . . . . . . . We bought a new computer: . .. . . .. . . . . .. . . . . . I Physics P llinois .... . .. . . . . .. . . . . . 32 . . . . . . . .. . . . . . . . . . . . . tools. . . . . .. . . . . . . . . . . . analysis . . . . . . . .. . . . . . …but we’ve on. . . . started .working . . . . .. . . . . . . . . . . . . . .. No data yet… . . . . . . . . . . . . . . . . . . . . . . . . . .... . .. . . . . .. . . . . . . . . . .. . . .. . . . .. . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . . . . I Physics P llinois . . . .. . . . . . . . . . . . . . . . . . . . .. . . . . . .. . . . . . . . . . . . . . . . .. . . . .. . . . . . . .. . 33 . . . We started looking at (old) straight-through A0 data . . . . . . . . . . . . . . . . . . . . . . .... . .. . . . . .. . . . . . . . . . .. . . . .. . . . . .. . . . . . . .. . . . . . . . . . . . 34 . . . . . . . . . .. . . . . . . . . . . . . I Physics P llinois . . .. . . . . . . . . . .. . . . . . . . . it. . Chris Jensen and colleagues just. finished . . . . . . . . . . HV pulser: ±750 V. . . . . . . . . . . .. . . . .. . . . . . . . chopper. . . .. . . . . . . . a Fermilab linac . Start with . . . . . . . .. . . . . . . . . HV pulsers . .. . . . . . . . . . . . . . . . . . . .. . . . . .. . . .. . . . . . . . . . . . . . . .. . . . . .. . . . . . . . .. . . . . . . . . . .... . .. . . . . .. . . . . . . . . . . . . 35 . . . . . . . . . . . Physics P llinois . . . . . . Gerry Dugan is ordering a FID pulser: . . . . . . . . . . . . . ±1. kV . • Maximum output into 50 Ohm: . . . . . . . . . • Amplitude .stability in burst mode 0.3 –. 0.5% . • Pre- and after-pulses 0.3 – 0.5% • Rise time 10-90% of amplitude 0.6 – 0.7 ns • Pulse duration at 90% of Umax 2 – 2.5 ns • Fall time 90-10% of amplitude 1 – 1.5 ns • Maximum PRF in burst mode 3 MHz • Maximum PRF in continuous mode 15 kHz • Timing jitter, both output pulses vs. trigger 20 ps, max • Power 110/220VAC, 50/60 Hz . . . .. . . I . . . . . . .. . . . . .. . . . . . . . . .. . . . . . . . . . . . . . . . . FID pulser . .. . . . . . . . . . . . . .. . . . . . . .. . . . . . . . . . .. . . . . . . . . . . . . . . . involved . . . Fermilab RF group is . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . UIUC HEP electronics design group’s chief is too. So we’re making progress. Goals: • install strip line kicker in A0 during April, 2005 • understand A0 by summer, 2005 • investigate small pulse compression system during summer, 2005 . . . . .. . . .. . George Gollin, Damping ring kicker report, March 9, 2005 .. . . . . . I Physics P llinois .... . .. . . . . .. . . . . . 36 . . . . . . . . .. . . . . . . Design, then build one module components. . . .using existing . . . . . . . . . . . . . . . . .. . . . . . .. . . . . . . . . . . . . . . . . . UIUC/FNAL, longer term plans . . . . . . .. . . . . . . . . .