Bio

Thomas Rabedeau is a Distinguished Staff Engineer and the Operations Division Director (acting) and Projects Coordinator at the Stanford Synchrotron Radiation Lightsource (SSRL) at SLAC National Accelerator Laboratory. Prior roles at SLAC include 13 years as the SSRL Beam Line Systems Division Director and nine years as the SLAC Radiation Safety Committee Chairperson. Prior to joining SLAC in 1993, he was a Visiting Scientist at IBM Almaden Research Center, Research Associate in Applied Physics at Harvard University, and Postdoctoral Fellow in Applied Physics at Harvard University.

Rabedeau’s research interests center on enhancing performance of high heat load x-ray optics including cryogenic monochromators and mirrors, x-ray optic servos and automatic tuning systems for x-ray mirror pointing and optical surface shape control, and x-ray beam line development for novel short pulse capabilities.

Current Role at Stanford

SSRL Operations Division Director (acting)
SSRL Projects Coordinator

Honors & Awards

  • Director’s Award – COVID Research and Operations Team, SLAC (2020)
  • Director’s Award – Recovery Task Force Team, SLAC (2020)

Education & Certifications

  • AB, University of California Berkeley, Physics (1979)
  • MS, University of Washington, Physics (1983)
  • PhD, University of Washington, Physics (1987)

Contact

  • Work
    [email protected]
    University - Staff Department: SLAC National Accelerator Laboratory Position: Distinguished Staff Engineer
    • 2575 Sand Hill Rd
    • Mailstop 0069
    • Menlo Park,  California  94025 

Additional Info

Links

All Publications

  • Experimental setup for high-resolution characterization of crystal optics for coherent X-ray beam applications. Journal of applied crystallography Halavanau, A., Margraf, R., Robles, R., MacArthur, J., Qu, Z., Marcus, G., Wu, J., Sato, T., Zhu, D., Takacs, C. J., Arthur, R., Kraynis, O., Johnson, B., Rabedeau, T. 2023; 56 (Pt 1): 155-159

    Abstract

    Stanford Synchrotron Radiation Lightsource serves a wide scientific community with its variety of X-ray capabilities. Recently, a wiggler X-ray source located at beamline 10-2 has been employed to perform high-resolution rocking curve imaging (RCI) of diamond and silicon crystals. X-ray RCI is invaluable for the development of upcoming cavity-based X-ray sources at SLAC, including the cavity-based X-ray free-electron laser and X-ray laser oscillator. In this paper, the RCI apparatus is described and experimental results are provided to validate its design. Future improvements of the setup are also discussed.

    View details for DOI 10.1107/S1600576722010998

    View details for PubMedID 36777134

    View details for PubMedCentralID PMC9901917

  • A seven-crystal Johann-type hard x-ray spectrometer at the Stanford Synchrotron Radiation Lightsource REVIEW OF SCIENTIFIC INSTRUMENTS Sokaras, D., Weng, T., Nordlund, D., Alonso-Mori, R., Velikov, P., Wenger, D., Garachtchenko, A., George, M., Borzenets, V., Johnson, B., Rabedeau, T., Bergmann, U. 2013; 84 (5): 053102

    Abstract

    We present a multicrystal Johann-type hard x-ray spectrometer (~5-18 keV) recently developed, installed, and operated at the Stanford Synchrotron Radiation Lightsource. The instrument is set at the wiggler beamline 6-2 equipped with two liquid nitrogen cooled monochromators--Si(111) and Si(311)--as well as collimating and focusing optics. The spectrometer consists of seven spherically bent crystal analyzers placed on intersecting vertical Rowland circles of 1 m of diameter. The spectrometer is scanned vertically capturing an extended backscattering Bragg angular range (88°-74°) while maintaining all crystals on the Rowland circle trace. The instrument operates in atmospheric pressure by means of a helium bag and when all the seven crystals are used (100 mm of projected diameter each), has a solid angle of about 0.45% of 4π sr. The typical resolving power is in the order of E/ΔE ~ 10,000. The spectrometer's high detection efficiency combined with the beamline 6-2 characteristics permits routine studies of x-ray emission, high energy resolution fluorescence detected x-ray absorption and resonant inelastic x-ray scattering of very diluted samples as well as implementation of demanding in situ environments.

    View details for DOI 10.1063/1.4803669

    View details for Web of Science ID 000319999300003

    View details for PubMedID 23742527

    View details for PubMedCentralID PMC4108715

  • A high resolution and large solid angle x-ray Raman spectroscopy end-station at the Stanford Synchrotron Radiation Lightsource REVIEW OF SCIENTIFIC INSTRUMENTS Sokaras, D., Nordlund, D., Weng, T., Mori, R., Velikov, P., Wenger, D., Garachtchenko, A., George, M., Borzenets, V., Johnson, B., Qian, Q., Rabedeau, T., Bergmann, U. 2012; 83 (4): 043112

    Abstract

    We present a new x-ray Raman spectroscopy end-station recently developed, installed, and operated at the Stanford Synchrotron Radiation Lightsource. The end-station is located at wiggler beamline 6-2 equipped with two monochromators-Si(111) and Si(311) as well as collimating and focusing optics. It consists of two multi-crystal Johann type spectrometers arranged on intersecting Rowland circles of 1 m diameter. The first one, positioned at the forward scattering angles (low-q), consists of 40 spherically bent and diced Si(110) crystals with 100 mm diameters providing about 1.9% of 4π sr solid angle of detection. When operated in the (440) order in combination with the Si (311) monochromator, an overall energy resolution of 270 meV is obtained at 6462.20 eV. The second spectrometer, consisting of 14 spherically bent Si(110) crystal analyzers (not diced), is positioned at the backward scattering angles (high-q) enabling the study of non-dipole transitions. The solid angle of this spectrometer is about 0.9% of 4π sr, with a combined energy resolution of 600 meV using the Si (311) monochromator. These features exceed the specifications of currently existing relevant instrumentation, opening new opportunities for the routine application of this photon-in/photon-out hard x-ray technique to emerging research in multidisciplinary scientific fields, such as energy-related sciences, material sciences, physical chemistry, etc.

    View details for DOI 10.1063/1.4704458

    View details for Web of Science ID 000303415300013

    View details for PubMedID 22559520

    View details for PubMedCentralID PMC4108631

  • The new micro-focus beamline at SSRL: Current capabilities and future possibilities Card, G. L., Cohen, A., Harrington, D., Van Campen, D. G., Rabedeau, T., Soltis, M. INT UNION CRYSTALLOGRAPHY. 2008: C178

    View details for DOI 10.1107/S0108767308094312

    View details for Web of Science ID 000480420701247

  • Development of a 3.8 meter variable polarization undulator (EPU) Deyhim, A., Lyndaker, A., Waterman, D., Caletka, D., Rowen, M., Rabedeau, T., Blomqvist, K., Choi, J. Y., Rah, S. AMER INST PHYSICS. 2007: 392-+

    View details for Web of Science ID 000244647900091

  • Intermediate-energy light sources NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT Corbett, J., Rabedeau, T. 2003; 500 (1-3): 11-17

    View details for DOI 10.1016/S0168-9002(03)00736-8

    View details for Web of Science ID 000182569800003

  • SPEAR 3 upgrade project: The final year Hettel, R., Akre, R., Allison, S., Bellomo, P., Boyce, R., Cadapan, L., Cassel, R., Choi, B., Corbett, W., Dell'Orco, D., Elioff, T., Evans, Fuller, R., Hill, A., Keeley, D., Kurita, N., Langton, J., Leyh, G., Limborg, C., Macnair, D., Martin, D., Mcintosh, P., Medvedko, E., Ng, C., Nzeadibe, Olsen, J., Ortega, M., Pappas, C., Park, S., Rabedeau, T., Rarback, H., Ringwall, A., Rodriguez, P., Safranek, J., Schwarz, H., Scott, B., Sebek, J., Smith, S., Straumann, T., Tanabe, J., Terebilo, A., Trautwein, A., Wennelskirchen, C., Widmeyer, M., Yotam, R., Zuo, K., Chew, J., Lucas, P., Webber, S. IEEE. 2003: 235-237

    View details for DOI 10.1109/PAC.2003.1288888

    View details for Web of Science ID 000189498600063

  • Monolithic I-beam crystal monochromator Bagnasco, J., Van Campen, D. G., Rabedeau, T. AMER INST PHYSICS. 2002: 1592-1594

    View details for DOI 10.1063/1.1445820

    View details for Web of Science ID 000174182800064

  • SESAME: an extended spectral range synchrotron radiation facility in the Middle East based on an upgrade to BESSY I 7th International Conference on Synchrotron Radiation Instrumentation (SRI 2000) Voss, G. A., Rabedeau, T., Raither, S., Schopper, H., Weihreter, E., Winick, H. ELSEVIER SCIENCE BV. 2001: 55–58

    View details for Web of Science ID 000170900500012

  • Liquid nitrogen cooled X-ray monochromator for high total power loads Rowen, M., Peck, J. W., Rabedeau, T. ELSEVIER SCIENCE BV. 2001: 400-403

    View details for DOI 10.1016/S0168-9002(01)00336-9

    View details for Web of Science ID 000170900500097

  • MACROMOLECULAR CRYSTALLOGRAPHY WITH A 7.5 T WIGGLER ON A 1 GEV SOURCE. Rabedeau, T., Kuhn, P., Voss, G., Weihreter, E., Winick, H. INT UNION CRYSTALLOGRAPHY. 1999: 235

    View details for Web of Science ID 000475706302116

  • SPEAR III - A brighter source at SSRL Hettel, R., Boyce, R., Brennan, S., Corbett, J., Cornacchia, M., Davies-White, W., Garren, A., Hofmann, A., Limborg, C., Nosochkov, Y., Nuhn, H. D., Rabedeau, T., Safranek, J., Wiedemann, H., Comyn, M., Craddock, M. K., Reiser, M., Thomson, J. IEEE. 1998: 838-840

    View details for Web of Science ID 000079582800265

  • Growth and structural characterization of highly oriented sputter-deposited (111), (110), and (100) Co/Cu superlattices APPLIED PHYSICS LETTERS Smith, D. J., Modak, A. R., Rabedeau, T. A., Parkin, S. S. 1997; 71 (11): 1480-1482

    View details for DOI 10.1063/1.119942

    View details for Web of Science ID A1997XV72600015

  • MAGNETIC SUPERLATTICES - MOLECULAR-BEAM EPITAXIAL-GROWTH AND PROPERTIES OF ARTIFICIALLY AND NATURALLY-LAYERED STRUCTURES FARROW, R. F., MARKS, R. F., CEBOLLADA, A., HARP, G. R., RABEDEAU, T. A., TONEY, M. F., WELLER, D., PARKIN, S. S. ELSEVIER SCIENCE BV. 1995: 1126-1131

    View details for DOI 10.1016/0022-0248(95)80115-S

    View details for Web of Science ID A1995RD43300085

  • PHOTON-BEAM POSITION MONITOR FOR SSRL BEAMLINE-9 CERINO, J. A., RABEDEAU, T., BOWEN, W. AMER INST PHYSICS. 1995: 1646-1647

    View details for DOI 10.1063/1.1145871

    View details for Web of Science ID A1995QK98100112

  • GIANT MAGNETORESISTANCE AT LOW FIELDS IN [(NIXFE1-X)(Y)AG-1-Y]/AG MULTILAYERS PREPARED BY MOLECULAR-BEAM EPITAXY (ABSTRACT) FARROW, R. F., MARKS, R. F., CEBOLLADA, A., TONEY, M. F., DOBBERTIN, D., BEYERS, R., PARKIN, S. S., RABEDEAU, T. A. AMER INST PHYSICS. 1994: 6618

    View details for DOI 10.1063/1.358181

    View details for Web of Science ID A1994PT84800200

  • X-RAY SPECULAR-REFLECTIVITY STUDY OF THE LIQUID-VAPOR DENSITY PROFILE OF HE-4 PHYSICAL REVIEW B LURIO, L. B., RABEDEAU, T. A., PERSHAN, P. S., SILVERA, I. F., DEUTSCH, M., KOSOWSKY, S. D., OCKO, B. M. 1993; 48 (13): 9644-9659

    View details for DOI 10.1103/PhysRevB.48.9644

    View details for Web of Science ID A1993MC11600059

    View details for PubMedID 10007210

  • LIQUID-VAPOR DENSITY PROFILE OF HELIUM - AN X-RAY STUDY PHYSICAL REVIEW LETTERS LURIO, L. B., RABEDEAU, T. A., PERSHAN, P. S., SILVERA, I. F., DEUTSCH, M., KOSOWSKY, S. D., OCKO, B. M. 1992; 68 (17): 2628-2631

    View details for DOI 10.1103/PhysRevLett.68.2628

    View details for Web of Science ID A1992HQ44000016

    View details for PubMedID 10045447

  • X-RAY REFLECTIVITY STUDIES OF SIO2/SI(001) APPLIED PHYSICS LETTERS RABEDEAU, T. A., TIDSWELL, I. M., PERSHAN, P. S., BEVK, J., FREER, B. S. 1991; 59 (26): 3422-3424

    View details for DOI 10.1063/1.105695

    View details for Web of Science ID A1991GW01800025

  • WETTING FILMS ON CHEMICALLY MODIFIED SURFACES - AN X-RAY STUDY PHYSICAL REVIEW B TIDSWELL, I. M., RABEDEAU, T. A., PERSHAN, P. S., FOLKERS, J. P., BAKER, M. V., WHITESIDES, G. M. 1991; 44 (19): 10869-10879

    View details for DOI 10.1103/PhysRevB.44.10869

    View details for Web of Science ID A1991GP68900050

    View details for PubMedID 9999114

  • X-RAY GRAZING-INCIDENCE DIFFRACTION FROM ALKYLSILOXANE MONOLAYERS ON SILICON-WAFERS JOURNAL OF CHEMICAL PHYSICS TIDSWELL, I. M., RABEDEAU, T. A., PERSHAN, P. S., KOSOWSKY, S. D., FOLKERS, J. P., WHITESIDES, G. M. 1991; 95 (4): 2854-2861

    View details for DOI 10.1063/1.460886

    View details for Web of Science ID A1991GA10800067

  • COMPLETE WETTING OF A ROUGH-SURFACE - AN X-RAY STUDY PHYSICAL REVIEW LETTERS TIDSWELL, I. M., RABEDEAU, T. A., PERSHAN, P. S., KOSOWSKY, S. D. 1991; 66 (16): 2108-2111

    View details for DOI 10.1103/PhysRevLett.66.2108

    View details for Web of Science ID A1991FH36600015

    View details for PubMedID 10043393

  • X-RAY SPECULAR REFLECTIVITY OF THE HE-4 LIQUID-VAPOR INTERFACE LURIO, L. B., RABEDEAU, T. A., PERSHAN, P. S., SILVERA, I. F. ELSEVIER SCIENCE BV. 1991: 507-508

    View details for DOI 10.1016/0921-4526(91)90299-T

    View details for Web of Science ID A1991FL63000103

  • SPREADING PRESSURE STUDY OF THE COMMENSURATE SOLID TO DOMAIN-WALL FLUID TRANSITION OF MONOLAYER HE-4 ON GRAPHITE PHYSICAL REVIEW B RABEDEAU, T. A. 1989; 39 (13): 9643-9645

    View details for DOI 10.1103/PhysRevB.39.9643

    View details for Web of Science ID A1989U545400109

    View details for PubMedID 9947715

  • ADSORPTION BINDING-ENERGY VARIATION RESULTING FROM SUBSTRATE SIZE EFFECTS PHYSICAL REVIEW B RABEDEAU, T. A., SULLIVAN, T. S. 1986; 34 (11): 8118-8121

    View details for DOI 10.1103/PhysRevB.34.8118

    View details for Web of Science ID A1986F096700077

    View details for PubMedID 9939503

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