Academic Appointments


  • Emeritus Faculty, Acad Council, SLAC General Program

2022-23 Courses


All Publications


  • Hard X-ray phase-contrast imaging with the Compact Light Source based on inverse Compton X-rays JOURNAL OF SYNCHROTRON RADIATION Bech, M., Bunk, O., David, C., Ruth, R., Rifkin, J., Loewen, R., Feidenhans'l, R., Pfeiffer, F. 2009; 16: 43-47

    Abstract

    The first imaging results obtained from a small-size synchrotron are reported. The newly developed Compact Light Source produces inverse Compton X-rays at the intersection point of the counter propagating laser and electron beam. The small size of the intersection point gives a highly coherent cone beam with a few milliradian angular divergence and a few percent energy spread. These specifications make the Compact Light Source ideal for a recently developed grating-based differential phase-contrast imaging method.

    View details for DOI 10.1107/S090904950803464X

    View details for Web of Science ID 000262862900007

    View details for PubMedID 19096173

    View details for PubMedCentralID PMC2724997

  • Fully coherent x-ray pulses from a regenerative-amplifier free-electron laser PHYSICAL REVIEW LETTERS Huang, Z. R., Ruth, R. D. 2006; 96 (14)

    Abstract

    We propose and analyze a regenerative-amplifier free-electron laser (FEL) to produce fully coherent, hard x-ray pulses. The method makes use of narrow-bandwidth Bragg crystals to form an x-ray feedback loop around a relatively short undulator. Self-amplified spontaneous emission (SASE) from the leading electron bunch in a bunch train is spectrally filtered by the Bragg reflectors and is brought back to the beginning of the undulator to interact repeatedly with subsequent bunches in the bunch train. The FEL interaction with these short bunches regeneratively amplifies the radiation intensity and broadens its spectrum, allowing for effective transmission of the x rays outside the crystal bandwidth. The spectral brightness of these x-ray pulses is about 2 to 3 orders of magnitude higher than that from a single-pass SASE FEL.

    View details for DOI 10.1103/PhysRevLett.96.144801

    View details for PubMedID 16712082

  • Coherent synchrotron radiation in storage rings Workshop on Physics and Applications of High Brightness Electron Beams Venturini, M., Warnock, R., Ruth, R. WORLD SCIENTIFIC PUBL CO PTE LTD. 2003: 292–303
  • Status of x-band standing wave structure studies at SLAC 20th Biennial Particle Accelerator Conference Dolgashev, V. A., Adolphsen, C., Burke, D. L., Bowden, G., Jones, R. M., Lewandowski, J., Li, Z., Loewen, R., Miller, R. H., Ng, C., Pearson, C., Ruth, R. D., Tantawi, S. G., Wang, J. W., Wilson, P. IEEE. 2003: 1264–1266
  • An ultra-high gradient Plasma Wakefield booster 9th Workshop on Advanced Accelerator Concepts Chen, P., Cheshkov, S., Ruth, R., Tajima, T. AMER INST PHYSICS. 2001: 903–913
  • Effects of focusing on radiation damping and quantum excitation in electron storage rings PHYSICAL REVIEW LETTERS Huang, Z. R., Ruth, R. D. 1998; 80 (11): 2318-2321
  • Laser-electron storage ring PHYSICAL REVIEW LETTERS Huang, Z. R., Ruth, R. D. 1998; 80 (5): 976-979
  • A 30 GHz 5-TeV linear collider PROCEEDINGS OF THE 1997 PARTICLE ACCELERATOR CONFERENCE, VOLS 1-3 Delahaye, J. P., Guignard, G., Irwin, J., Raubenheimer, T. O., Ruth, R. D., Wilson, I., Wilson, P. B. 1998: 482-484
  • Analysis and application of microwave radiation from the damping manifolds of the SLAC damped detuned structures (DDS) PROCEEDINGS OF THE 1997 PARTICLE ACCELERATOR CONFERENCE, VOLS 1-3 Jones, R. M., Seidel, M., Kroll, N. M., Miller, R. H., Adolphsen, C., Bane, K. L., Ruth, R. D., Wang, J. 1998: 554-556
  • Recent results & plans for the future on SLAC damped detuned structures (DDS) 7th Workshop on Advanced Accelerator Concepts (AAC 96) Kroll, N. M., Jones, R. M., Adolphsen, C., Bane, K. L., Fowkes, W. R., Ko, K., Miller, R. H., Ruth, R. D., Seidel, M., Wang, J. W. AMER INST PHYSICS. 1997: 455–64
  • Analysis and application of manifold radiation in DDS 1: First experiences 7th Workshop on Advanced Accelerator Concepts (AAC 96) Jones, R. M., Kroll, N. M., Seidel, M., Adolphsen, C., Bane, K. L., Fowkes, W. R., Ko, K., Miller, R. H., Ruth, R. D., Wang, J. W. AMER INST PHYSICS. 1997: 465–72
  • Suppression of radiation excitation in focusing environment 7th Workshop on Advanced Accelerator Concepts (AAC 96) Huang, Z. R., Ruth, R. D. AMER INST PHYSICS. 1997: 254–62
  • A semi-classical treatment of channeling radiation reaction NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS Huang, Z. R., Chen, P. S., Ruth, R. D. 1996; 119 (1-2): 192-198
  • Active radio frequency pulse compression using switched resonant delay lines NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT Tantawi, S. G., Ruth, R. D., Vlieks, A. E. 1996; 370 (2-3): 297-302
  • Transverse multibunch instabilities for non-rigid bunches 16th Biennial Particle Accelerator Conference Berg, J. S., Ruth, R. D. IEEE. 1996: 3076–3078
  • Design of a multi-megawatt X-band solid state microwave switch 16th Biennial Particle Accelerator Conference Tantawi, S. G., Lee, T. G., Ruth, R. D., Vlieks, A. E., Zolotorev, M. IEEE. 1996: 1584–1586
  • Design parameters for the damped detuned accelerating structure 16th Biennial Particle Accelerator Conference Ko, K., Bane, K., Gluckstern, R., Hoag, H., Kroll, N., Lin, X. T., Miller, R., Ruth, R., Thompson, K., Wang, J. IEEE. 1996: 1058–1060
  • Test facilities for future linear colliders 16th Biennial Particle Accelerator Conference Ruth, R. D. IEEE. 1996: 616–620
  • High gradient experiments on NLCTA accelerator structures XVIII International Linear Accelerator Conference Wang, J. W., Eichner, J. P., Fant, K. H., HOAG, H. A., KOONTZ, R. F., LAVINE, T., LOEW, G. A., Loewen, R. J., MENEGAT, A., Miller, R. H., Nantista, C. D., Pearson, C., Ruth, R. D., Tantawi, S. G., Vlieks, A. E., Wilson, P. B., Yoneda, C. C E R N. 1996: 656–58
  • SLAC/CERN high gradient tests of an X-band accelerating section 16th Biennial Particle Accelerator Conference Wang, J. W., LOEW, G. A., Loewen, R. J., Ruth, R. D., Vlieks, A. E., Wilson, I., Wuensch, W. IEEE. 1996: 653–655
  • Active radio frequency pulse compression using switched resonant delay lines 16th Biennial Particle Accelerator Conference Tantawi, S. G., Ruth, R. D., Vlieks, A. E. IEEE. 1996: 1581–1583
  • Channeling acceleration: A path to ultrahigh energy colliders Tamura Symposium on the Future of Accelerator Physics Chen, P. S., Huang, Z. R., Ruth, R. D. AMER INST PHYSICS. 1996: 331–43
  • Parameters of the SLAC next linear collider 16th Biennial Particle Accelerator Conference Raubenheimer, T., Adolphsen, C., Burke, D., Chen, P., Ecklund, S., Irwin, J., Loew, G., Markiewicz, T., Miller, R., Paterson, E., PHINNEY, N., Ross, M., Ruth, R., Sheppard, J., Tang, H., Thompson, K., Wilson, P. IEEE. 1996: 698–700
  • Emittance and energy control in the NLC main linacs 16th Biennial Particle Accelerator Conference Adolphsen, C., Bane, K. L., Kubo, K., Raubenheimer, T., Ruth, R. D., Thompson, K. A., Zimmermann, F. IEEE. 1996: 2989–2991
  • Long-range wakefields and split-tune lattice at the SLC XVIII International Linear Accelerator Conference Decker, F. J., ADOLPHSEN, C. E., Assmann, R., Bane, K., Kubo, K., Minty, M., Raimondi, P., Raubenheimer, T., Ruth, R., SPENCE, W. L. C E R N. 1996: 140–42
  • Radiation damping in focusing-dominated systems 16th Biennial Particle Accelerator Conference Huang, Z. R., Chen, P. S., Ruth, R. D. IEEE. 1996: 3326–3328
  • MEASUREMENT OF WAKE-FIELD SUPPRESSION IN A DETUNED X-BAND ACCELERATOR STRUCTURE PHYSICAL REVIEW LETTERS Adolphsen, C., Bane, K., Higo, T., Kubo, K., Miller, R., Ruth, R., Thompson, K., Wang, J. 1995; 74 (13): 2475-2478
  • RADIATION REACTION IN A CONTINUOUS FOCUSING CHANNEL PHYSICAL REVIEW LETTERS Huang, Z., Chen, P., Ruth, R. D. 1995; 74 (10): 1759-1762
  • Radiation and radiation reaction in continuous focusing channels 6th Advanced Accelerator Concepts Workshop Huang, Z. R., Chen, P. S., Ruth, R. D. AIP PRESS. 1995: 646–658
  • Manifold damping of the NLC detuned accelerating structure 6th Advanced Accelerator Concepts Workshop Kroll, N., Thompson, K., Bane, K., Gluckstern, R., Ko, K., Miller, R., Ruth, R. AIP PRESS. 1995: 777–788
  • FULL-TURN SYMPLECTIC MAP FROM A GENERATOR IN A FOURIER-SPLINE BASIS 1993 Computational Accelerator Physics Conference (CAP93) Berg, J. S., Warnock, R. L., Ruth, R. D. AIP PRESS. 1994: 413–418
  • COLLIMATION SYSTEMS FOR A TEV LINEAR COLLIDER PARTICLE ACCELERATORS MERMINGA, N., Irwin, J., Helm, R., Ruth, R. D. 1994; 48 (2): 85-108
  • FULL-TURN SYMPLECTIC MAP FROM A GENERATOR IN A FOURIER-SPLINE BASIS 1993 Particle Accelerator Conference Berg, J. S., Warnock, R. L., Ruth, R. D., Forest, E. I E E E. 1993: 291–293
  • SIMULATION AND COMPENSATION OF MULTIBUNCH ENERGY VARIATION IN NLC 1993 Particle Accelerator Conference Thompson, K. A., Ruth, R. D. I E E E. 1993: 3693–3695
  • ACCELERATOR STRUCTURE DEVELOPMENT FOR NLC 1993 Particle Accelerator Conference HOAG, H. A., DERUYTER, H., Pearson, C., Ruth, R. D., Wang, J. W., Schaefer, J. I E E E. 1993: 907–909
  • ACCELERATOR AND RF SYSTEM-DEVELOPMENT FOR NLC 1993 Particle Accelerator Conference Vlieks, A. E., CALLIN, R., DERUYTER, H., Early, R., FANT, K. S., FARKAS, Z. D., Fowkes, W. R., Galloway, C., HOAG, H. A., Koontz, R., LOEW, G. A., LAVINE, T. L., MENEGAT, A., Miller, R. H., Palmer, D., PEARSON, C. C., Ruth, R. D., Tantawi, S. G., Wilson, P. B., Wang, J. W., Yoneda, C. I E E E. 1993: 620–622
  • THE NEXT LINEAR COLLIDER TEST ACCELERATOR 1993 Particle Accelerator Conference Ruth, R. D., Adolphsen, C., Bane, K., Boyce, R. F., Burke, D. L., CALLIN, R., Caryotakis, G., CASSEL, R., Clark, S. L., DERUYTER, H., Fant, K., Fuller, R., Heifets, S., Hoag, H., Humphrey, R., Heifets, S., Koontz, R., KROLL, K. N., LAVINE, T., LOEW, G. A., MENEGAT, A., Miller, R. H., Nantista, C., Paterson, J. M., Pearson, C., Phillips, R., Rifkin, J., Spencer, J., Tantawi, S., Thompson, K. A., VLIEKS, A., Vylet, V., Wang, J. W., Wilson, P. B., Yeremian, A., Youngman, B. I E E E. 1993: 543–545
  • A HIGH-POWER SLED-II PULSE-COMPRESSION SYSTEM 3rd European Particle Accelerator Conference Kroll, N. M., FARKAS, Z. D., LAVINE, T. L., MENEGAT, A., Nantista, C., Ruth, R. D., Wilson, P. B. EDITIONS FRONTIERES. 1992: 327–329
  • STABILITY OF NONLINEAR HAMILTONIAN MOTION FOR A FINITE BUT VERY LONG-TIME PHYSICAL REVIEW LETTERS Warnock, R. L., Ruth, R. D. 1991; 66 (8): 990-993
  • 4TH-ORDER SYMPLECTIC INTEGRATION PHYSICA D Forest, E., Ruth, R. D. 1990; 43 (1): 105-117
  • CONTROLLING TRANSVERSE MULTIBUNCH INSTABILITIES IN LINACS OF HIGH-ENERGY LINEAR COLLIDERS PHYSICAL REVIEW D Thompson, K. A., Ruth, R. D. 1990; 41 (3): 964-977
  • HIGH-GRADIENT ELECTRON-ACCELERATOR POWERED BY A RELATIVISTIC KLYSTRON PHYSICAL REVIEW LETTERS Allen, M. A., Boyd, J. K., Callin, R. S., DERUYTER, H., EPPLEY, K. R., FANT, K. S., Fowkes, W. R., HAIMSON, J., HOAG, H. A., HOPKINS, D. B., Houck, T., KOONTZ, R. F., LAVINE, T. L., LOEW, G. A., Mecklenburg, B., Miller, R. H., Ruth, R. D., Ryne, R. D., Sessler, A. M., Vlieks, A. E., Wang, J. W., Westenskow, G. A., Yu, S. S. 1989; 63 (22): 2472-2475
  • INVARIANT TORI THROUGH DIRECT SOLUTION OF THE HAMILTON-JACOBI EQUATION PHYSICA D-NONLINEAR PHENOMENA Warnock, R. L., Ruth, R. D. 1987; 26 (1-3): 1-36
  • A DIAGNOSTIC FOR DYNAMIC APERTURE IEEE TRANSACTIONS ON NUCLEAR SCIENCE MORTON, P. L., Pellegrin, J. L., Raubenheimer, T., Rivkin, L., Ross, M., Ruth, R. D., SPENCE, W. L. 1985; 32 (5): 2291-2293
  • ACCELERATOR PHYSICS MEASUREMENTS AT THE DAMPING RING IEEE TRANSACTIONS ON NUCLEAR SCIENCE Rivkin, L., Delahaye, J. P., Wille, K., Allen, M., Bane, K., Fieguth, T., Hofmann, A., Hutton, A., Lee, M., LINEBARGER, W., Morton, P., Ross, M., Ruth, R., Schwarz, H., Seeman, J., Sheppard, J., Stiening, R., Wilson, P., Woodley, M. 1985; 32 (5): 2626-2628
  • STATUS OF THE SLC DAMPING RINGS IEEE TRANSACTIONS ON NUCLEAR SCIENCE Hutton, A. M., DAVIESWHITE, W. A., Delahaye, J. P., Fieguth, T. H., Hofmann, A., Jager, J., Kloeppel, P. K., Lee, M. J., LINEBARGER, W. A., Rivkin, L., Ross, M., Ruth, R., SHOAEE, H., WOODLEY, M. D. 1985; 32 (5): 1659-1661
  • SUPERCONVERGENT TRACKING AND INVARIANT SURFACES IN PHASE-SPACE IEEE TRANSACTIONS ON NUCLEAR SCIENCE Ruth, R. D., Raubenheimer, T., Warnock, R. L. 1985; 32 (5): 2206-2208
  • A REVIEW OF POLARIZED PROTON-BEAM TECHNIQUES AND A REPORT ON THE WORKSHOP ON POLARIZED BEAMS JOURNAL DE PHYSIQUE Ruth, R. D. 1985; 46 (C2): 611-624
  • STABILITY IN DYNAMICAL-SYSTEMS .1. AIP CONFERENCE PROCEEDINGS Courant, E. D., Ruth, R. D., Weng, W. T. 1985: 294-343
  • A COMPARISON OF THE PLASMA BEAT WAVE ACCELERATOR AND THE PLASMA WAKE FIELD ACCELERATOR AIP CONFERENCE PROCEEDINGS PISIN, C., Ruth, R. D. 1985: 213-225
  • PLASMA LASER-ACCELERATOR - LONGITUDINAL DYNAMICS, THE PLASMA LASER INTERACTION, AND A QUALITATIVE DESIGN AIP CONFERENCE PROCEEDINGS Ruth, R. D., Chao, A. W. 1982: 94-111