Zobrazeno 1 - 10
of 1 656
pro vyhledávání: '"Schramm U"'
Autor:
Ahmadiniaz, N., Bähtz, C., Benediktovitch, A., Bömer, C., Bocklage, L., Cowan, T. E., Edwards, J., Evans, S., Viñas, S. Franchino, Gies, H., Göde, S., Görs, J., Grenzer, J., Acosta, U. Hernandez, Heinzl, T., Hilz, P., Hippler, W., Huang, L. G., Humphries, O., Karbstein, F., Khademi, P., King, B., Kluge, T., Kohlfürst, C., Krebs, D., Laso-García, A., Lötzsch, R., Macleod, A. J., Marx-Glowna, B., Mosman, E. A., Nakatsutsumi, M., Paulus, G. G., Rahul, S. V., Randolph, L., Röhlsberger, R., Rohringer, N., Sävert, A., Sadashivaiah, S., Sauerbrey, R., Schlenvoigt, H. -P., Schmidt, S. M., Schramm, U., Schützhold, R., Schwinkendorf, J. -P., Seipt, D., Šmíd, M., Stöhlker, T., Toncian, T., Valialshchikov, M., Wipf, A., Zastrau, U., Zepf, M.
Quantum field theory predicts a nonlinear response of the vacuum to strong electromagnetic fields of macroscopic extent. This fundamental tenet has remained experimentally challenging and is yet to be tested in the laboratory. A particularly distinct
Externí odkaz:
http://arxiv.org/abs/2405.18063
Autor:
Foerster, F. M., Döpp, A., Haberstroh, F., Grafenstein, K. v., Campbell, D., Chang, Y. -Y., Corde, S., Cabadağ, J. P. Couperus, Debus, A., Gilljohann, M. F., Habib, A. F., Heinemann, T., Hidding, B., Irman, A., Irshad, F., Knetsch, A., Kononenko, O., de la Ossa, A. Martinez, Nutter, A., Pausch, R., Schilling, G., Schletter, A., Schöbel, S., Schramm, U., Travac, E., Ufer, P., Karsch, S.
Publikováno v:
Phys. Rev. X 12, 041016 (2022)
We present experimental results on a plasma wakefield accelerator (PWFA) driven by high-current electron beams from a laser wakefield accelerator (LWFA). In this staged setup stable and high quality (low divergence and low energy spread) electron bea
Externí odkaz:
http://arxiv.org/abs/2206.00507
Autor:
Chen, D.Y., Wang, H.B., Wen, W.Q., Huang, Z.K., Zhang, D.C., Yuan, Y.J., Winters, D., Klammes, S., Kiefer, D., Walther, Th., Loeser, M., Siebold, M., Yan, K.M., Li, J., Tang, M.T., Wu, J.X., Yin, D.Y., Lin, F.P., Yang, J.J., Mao, L.J., Yang, J.C., Zhang, S.F., Schramm, U., Bussmann, M., Ma, X.
Publikováno v:
In Nuclear Inst. and Methods in Physics Research, A August 2024 1065
Autor:
Bowers, B., LaBerge, M., Koehler, A., Cabadağ, J. Couperus, Chang, Y. -Y., Ufer, P., Šmíd, M., Irman, A., Wang, T., Bernstein, A., Shvets, G., Schramm, U., Downer, M.
We present methods and preliminary observations of two pulse Direct Laser Acceleration in a Laser-Driven Plasma Accelerator. This acceleration mechanism uses a second co-propagating laser pulse to overlap and further accelerate electrons in a wakefie
Externí odkaz:
http://arxiv.org/abs/2107.00479
Autor:
Hannasch, A., LaBerge, M., Zgadzaj, R., Cabadağ, J. P. Couperus, Garcia, A. Laso, Kurz, T., Cowan, T., Schramm, U., Irman, A., Downer, M. C.
We generate inverse Compton scattered X-rays in both linear and nonlinear regimes with a 250 MeV laser wakefield electron accelerator and plasma mirror by retro-reflecting the unused drive laser light to scatter from the accelerated electrons. We cha
Externí odkaz:
http://arxiv.org/abs/2107.00139
Autor:
Hannasch, A., Garcia, A. Laso, LaBerge, M., Zgadzaj, R., Koehler, A., Cabadag, J. P. Couperus, Zarini, O., Kurz, T., Ferrari, A., Molodtsova, M., Naumann, L., Cowan, T., Schramm, U., Irman, A., Downer, M. C.
Publikováno v:
Sci Rep 11, 14368 (2021)
We reconstruct spectra of secondary X-rays from a tunable 250-350 MeV laser wakefield electron accelerator from single-shot X-ray depth-energy measurements in a compact (7.5 $\times$ 7.5 $\times$ 15 cm), modular X-ray calorimeter made of alternating
Externí odkaz:
http://arxiv.org/abs/2103.01370
Autor:
Bohlin, H, Brack, F-E, Cervenak, M, Chodukowski, T, Cikhardt, J, Dostál, J, Dudžák, R, Hubner, J., Huo, W, Jelinek, S, Klír, D, Kroll, F, Krupka, M, Krůs, M, Pisarczyk, T, Rusiniak, Z, Schlegel, T, Schramm, U., Nguyen-Bui, T-H, Weber, S, Zaraś-Szydłowska, A, Zeil, K, Kumar, D, Tikhonchuk, V
The interaction of supersonic laser-generated plasma jets with a secondary gas target was studied experimentally. The plasma parameters of the jet, and the resulting shock, were characterized using a combination of multi-frame interferometry/shadowgr
Externí odkaz:
http://arxiv.org/abs/2009.11567
Autor:
Ziegler, T., Albach, D., Bernert, C., Bock, S., Brack, F. -E., Cowan, T. E., Dover, N. P., Garten, M., Gaus, L., Gebhardt, R., Goethel, I., Helbig, U., Irman, A., Kiriyama, H., Kluge, T., Kon, A., Kraft, S., Kroll, F., Loeser, M., Metzkes-Ng, J., Nishiuchi, M., Obst-Huebl, L., Püschel, T., Rehwald, M., Schlenvoigt, H. -P., Schramm, U., Zeil, K.
Publikováno v:
Sci Rep 11, 7338 (2021)
We report on experimental investigations of proton acceleration from solid foils irradiated with PW-class laser-pulses, where highest proton cut-off energies were achieved for temporal pulse parameters that varied significantly from those of an ideal
Externí odkaz:
http://arxiv.org/abs/2007.11499
Autor:
Ahmadiniaz, N., Cowan, T. E., Sauerbrey, R., Schramm, U., Schlenvoigt, H. -P., Schützhold, R.
Publikováno v:
Phys. Rev. D 101, 116019 (2020)
Quantum electrodynamics predicts the vacuum to behave as a non-linear medium, including effects such as birefringence. However, for experimentally available field strengths, this vacuum polarizability is extremely small and thus very hard to measure.
Externí odkaz:
http://arxiv.org/abs/2003.10519
Autor:
Kurz, T., Heinemann, T., Gilljohann, M. F., Chang, Y. Y., Cabadağ, J. P. Couperus, Debus, A., Kononenko, O., Pausch, R., Schöbel, S., Assmann, R. W., Bussmann, M., Ding, H., Götzfried, J., Köhler, A., Raj, G., Schindler, S., Steiniger, K., Zarini, O., Corde, S., Döpp, A., Hidding, B., Karsch, S., Schramm, U., de la Ossa, A. Martinez, Irman, A.
Plasma wakefield accelerators are capable of sustaining gigavolt-per-centimeter accelerating fields, surpassing the electric breakdown threshold in state-of-the-art accelerator modules by 3-4 orders of magnitude. Beam-driven wakefields offer particul
Externí odkaz:
http://arxiv.org/abs/1909.06676