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@InProceedings{lu:napac2019-mozbb2,
author = {X. Lu and M.E. Conde and D.S. Doran and G. Ha and C.-J. Jing and I. Mastovsky and M.M. Peng and J.F. Picard and J.G. Power and J. Seok and J.H. Shao and M.A. Shapiro and R.J. Temkin and E.E. Wisniewski},
% author = {X. Lu and M.E. Conde and D.S. Doran and G. Ha and C.-J. Jing and I. Mastovsky and others},
% author = {X. Lu and others},
title = {{Experiments with Metamaterial-Based Metallic Accelerating Structures}},
booktitle = {Proc. NAPAC'19},
pages = {78--82},
paper = {MOZBB2},
language = {english},
keywords = {experiment, wakefield, acceleration, radiation, GUI},
venue = {Lansing, MI, USA},
series = {North American Particle Accelerator Conference},
number = {4},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {10},
year = {2019},
issn = {2673-7000},
isbn = {978-3-95450-223-3},
doi = {10.18429/JACoW-NAPAC2019-MOZBB2},
url = {http://jacow.org/napac2019/papers/mozbb2.pdf},
note = {https://doi.org/10.18429/JACoW-NAPAC2019-MOZBB2},
abstract = {We present experimental studies of metamaterial (MTM) structures for wakefield acceleration. The MTM structure is an all-metal periodic structure with its period much smaller than the wavelength at X-band. The fundamental TM mode has a negative group velocity, so an electron beam traveling through the structure radiates by reversed Cherenkov radiation. Two experiments have been completed at the Argonne Wakefield Accelerator (AWA), namely the Stage-I and Stage-II experiments. Differences between the two experiments include: (1) Structure length (Stage-I 8 cm, Stage-II 20 cm); (2) Bunch number used to excite the structure (Stage-I up to 2 bunches, Stage-II up to 8 bunches). In the Stage-I experiment, two bunches with a total charge of 85 nC generated 80 MW of RF power in a 2 ns long pulse. In the Stage-II experiment, the highest peak power reached 380 MW in a 10 ns long pulse from a train of 8 bunches with a total charge of 224 nC. Acceleration of a witness bunch has not been demonstrated yet, but the extracted power can be transferred to a separate accelerator for two-beam acceleration or directly applied to a trailing witness bunch in the same structure for collinear acceleration.},
}