Spencer Gessner

All Publications

• Correlations between X-rays, visible light and drive-beam energy loss observed in plasma wakefield acceleration experiments at FACET-II JOURNAL OF PLASMA PHYSICS Zhang, C., Storey, D., Claveria, P., Nie, Z., Marsh, K. A., Mori, W. B., Adli, E., An, W., Ariniello, R., Cao, G. J., Clark, C., Corde, S., Dalichaouch, T., Doss, C. E., Emma, C., Ekerfelt, H., Gerstmayr, E., Gessner, S., Hansel, C., Knetsch, A., Lee, V., Li, F., Litos, M., OShea, B., White, G., Yocky, G., Zakharova, V., Hogan, M., Joshi, C. 2024; 90 (4)

  View details for DOI 10.1017/S0022377824000734

  View details for Web of Science ID 001314642300001

• Wakefield generation in hydrogen and lithium plasmas at FACET-II: Diagnostics and first beam-plasma interaction results PHYSICAL REVIEW ACCELERATORS AND BEAMS Storey, D., Zhang, C., Claveria, P., Cao, G. J., Adli, E., Alsberg, L., Ariniello, R., Clarke, C., Corde, S., Dalichaouch, T. N., Doss, C. E., Ekerfelt, H., Emma, C., Gerstmayr, E., Gessner, S., Gilljohann, M., Hast, C., Knetsch, A., Lee, V., Litos, M., Loney, R., Marsh, K. A., Matheron, A., Mori, W. B., Nie, Z., O'Shea, B., Parker, M., White, G., Yocky, G., Zakharova, V., Hogan, M. J., Joshi, C. 2024; 27 (5)

  View details for DOI 10.1103/PhysRevAccelBeams.27.051302

  View details for Web of Science ID 001241703400001

• Positron acceleration in plasma wakefields PHYSICAL REVIEW ACCELERATORS AND BEAMS Cao, G. J., Lindstrom, C. A., Adli, E., Corde, S., Gessner, S. 2024; 27 (3)

  View details for DOI 10.1103/PhysRevAccelBeams.27.034801

  View details for Web of Science ID 001187481200001

• Temporal evolution of the light emitted by a thin, laser-ionized plasma source PHYSICS OF PLASMAS Lee, V., Ariniello, R., Doss, C., Wolfinger, K., Stoltz, P., Hansel, C., Gessner, S., Cary, J., Litos, M. 2024; 31 (1)

  View details for DOI 10.1063/5.0180416

  View details for Web of Science ID 001143690900001

• Status and future plans for C<SUP>3</SUP> R&D JOURNAL OF INSTRUMENTATION Nanni, E. A., Breidenbach, M., Li, Z., Vernieri, C., Wang, F., White, G., Bai, M., Belomestnykh, S., Bhat, P., Barklow, T., Berg, W. J., Borzenets, V., Byrd, J., Dhar, A., Dhuley, R. C., Doss, C., Duris, J., Edelen, A., Emma, C., Frisch, J., Gabriel, A., Gessner, S., Hast, C., Jing, C., Klebaner, A., Kim, D., Krasnykh, A. K., Lewellen, J., Liepe, M., Litos, M., Lu, X., Maxson, J., Montanari, D., Musumeci, P., Nagaitsev, S., Nassiri, A., Ng, C., Othman, M. K., Oriunno, M., Palmer, D., Patterson, J., Peskin, M. E., Peterson, T. J., Power, J., Qiang, J., Rosenzweig, J., Shiltsev, V., Shumail, M., Simakov, E., Snively, E., Spataro, B., Tantawi, S., Graaf, H., Weatherford, B., Wu, J., Wootton, K. P. 2023; 18 (9)

  View details for DOI 10.1088/1748-0221/18/09/P09040

  View details for Web of Science ID 001100999100010

• Beam delivery and beamstrahlung considerations for ultra-high energy linear colliders JOURNAL OF INSTRUMENTATION Barklow, T., Gessner, S., Hogan, M., Ng, C., Peskin, M., Raubenheimer, T., White, G., Adli, E., Cao, G., Lindstrom, C. A., Sjobak, K., Barber, S., Geddes, C., Formenti, A., Lehe, R., Schroeder, C., Terzani, D., van Tilborg, J., Vay, J., Zoni, E., Doss, C., Litos, M., Lobach, I., Power, J., Swiatlowski, M., Fedeli, L., Vincenti, H., Grismayer, T., Vranic, M., Zhang, W. 2023; 18 (9)

  View details for DOI 10.1088/1748-0221/18/09/P09022

  View details for Web of Science ID 001103957900003

• A liquid xenon positron target concept NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT Varverakis, M., Holtzapple, R., Fujii, H., Gessner, S. 2023; 1053

  View details for DOI 10.1016/j.nima.2023.168329

  View details for Web of Science ID 001113617800001

• Probing strong-field QED in beam-plasma collisions (vol 6, 141, 2023) COMMUNICATIONS PHYSICS Matheron, A., Claveria, P., Ariniello, R., Ekerfelt, H., Fiuza, F., Gessner, S., Gilljohann, M. F., Hogan, M. J., Keitel, C. H., Knetsch, A., Litos, M., Mankovska, Y., Montefiori, S., Nie, Z., O'Shea, B., Peterson, J., Storey, D., Wu, Y., Xu, X., Zakharova, V., Davoine, X., Gremillet, L., Tamburini, M., Corde, S. 2023; 6 (1)

  View details for DOI 10.1038/s42005-023-01294-x

  View details for Web of Science ID 001026855700001

• Probing strong-field QED in beam-plasma collisions COMMUNICATIONS PHYSICS Matheron, A., Claveria, P., Ariniello, R., Ekerfelt, H., Fiuza, F., Gessner, S., Gilljohann, M. F., Hogan, M., Keitel, C., Knetsch, A., Litos, M., Mankovska, Y., Montefiori, S., Nie, Z., O'Shea, B., Peterson, J., Storey, D., Wu, Y., Xu, X., Zakharova, V., Davoine, X., Gremillet, L., Tamburini, M., Corde, S. 2023; 6 (1)

  View details for DOI 10.1038/s42005-023-01263-4

  View details for Web of Science ID 001008596100001

• 9 GeV energy gain in a beam-driven plasma wakefield accelerator PLASMA PHYSICS AND CONTROLLED FUSION Litos, M., Adli, E., Allen, J. M., An, W., Clarke, C. I., Corde, S., Clayton, C. E., FREDERICO, J., Gessner, S. J., Green, S. Z., Hogan, M. J., Joshi, C., Lu, W., Marsh, K. A., Mori, W. B., Schmeltz, M., Vafaei-Najafabadi, N., Yakimenko, V. 2016; 58 (3)

  View details for DOI 10.1088/0741-3335/58/3/034017

  View details for Web of Science ID 000371571600018

• Adaptive method for electron bunch profile prediction PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS Scheinker, A., Gessner, S. 2015; 18 (10)

  View details for DOI 10.1103/PhysRevSTAB.18.102801

  View details for Web of Science ID 000362913500001

• Multi-gigaelectronvolt acceleration of positrons in a self-loaded plasma wakefield NATURE Corde, S., Adli, E., Allen, J. M., An, W., Clarke, C. I., Clayton, C. E., Delahaye, J. P., FREDERICO, J., Gessner, S., Green, S. Z., Hogan, M. J., Joshi, C., Lipkowitz, N., Litos, M., Lu, W., Marsh, K. A., Mori, W. B., Schmeltz, M., Vafaei-Najafabadi, N., Walz, D., Yakimenko, V., Yocky, G. 2015; 524 (7566): 442-?

  Abstract

  Electrical breakdown sets a limit on the kinetic energy that particles in a conventional radio-frequency accelerator can reach. New accelerator concepts must be developed to achieve higher energies and to make future particle colliders more compact and affordable. The plasma wakefield accelerator (PWFA) embodies one such concept, in which the electric field of a plasma wake excited by a bunch of charged particles (such as electrons) is used to accelerate a trailing bunch of particles. To apply plasma acceleration to electron-positron colliders, it is imperative that both the electrons and their antimatter counterpart, the positrons, are efficiently accelerated at high fields using plasmas. Although substantial progress has recently been reported on high-field, high-efficiency acceleration of electrons in a PWFA powered by an electron bunch, such an electron-driven wake is unsuitable for the acceleration and focusing of a positron bunch. Here we demonstrate a new regime of PWFAs where particles in the front of a single positron bunch transfer their energy to a substantial number of those in the rear of the same bunch by exciting a wakefield in the plasma. In the process, the accelerating field is altered--'self-loaded'--so that about a billion positrons gain five gigaelectronvolts of energy with a narrow energy spread over a distance of just 1.3 metres. They extract about 30 per cent of the wake's energy and form a spectrally distinct bunch with a root-mean-square energy spread as low as 1.8 per cent. This ability to transfer energy efficiently from the front to the rear within a single positron bunch makes the PWFA scheme very attractive as an energy booster to an electron-positron collider.

  View details for DOI 10.1038/nature14890

  View details for Web of Science ID 000360069300032

• High-efficiency acceleration of an electron beam in a plasma wakefield accelerator NATURE Litos, M., Adli, E., An, W., Clarke, C. I., Clayton, C. E., Corde, S., Delahaye, J. P., England, R. J., Fisher, A. S., FREDERICO, J., Gessner, S., Green, S. Z., Hogan, M. J., Joshi, C., Lu, W., Marsh, K. A., Mori, W. B., Muggli, P., Vafaei-Najafabadi, N., Walz, D., White, G., Wu, Z., Yakimenko, V., Yocky, G. 2014; 515 (7525): 92-?

  View details for DOI 10.1038/nature13882

  View details for Web of Science ID 000344187500035

• Laser ionized preformed plasma at FACET PLASMA PHYSICS AND CONTROLLED FUSION Green, S. Z., Adli, E., Clarke, C. I., Corde, S., Edstrom, S. A., Fisher, A. S., FREDERICO, J., Frisch, J. C., Gessner, S., Gilevich, S., Hering, P., Hogan, M. J., Jobe, R. K., Litos, M., May, J. E., Walz, D. R., Yakimenko, V., Clayton, C. E., Joshi, C., Marsh, K. A., Vafaei-Najafabadi, N., Muggli, P. 2014; 56 (8)

  View details for DOI 10.1088/0741-3335/56/8/084011

  View details for Web of Science ID 000340055300012

• Extremum Seeking for Parameter Identification, Implementation for Electron Beam Property Prediction Scheinker, A., Gessner, S., IEEE IEEE. 2014: 2673–78

  View details for Web of Science ID 000370073802131