Generation of High-Power, Reversed-Cherenkov Wakefield Radiation in a Metamaterial Structure

Lu, Xueying; Shapiro, Michael A.; Mastovsky, Ivan; Temkin, Richard J.; Conde, Manoel; Power, John G.; Shao, Jiahang; Wisniewski, Eric E.; Jing, Chunguang

doi:10.7910/DVN/6PLBO1

Title: Generation of High-Power, Reversed-Cherenkov Wakefield Radiation in a Metamaterial Structure

Dataset
Other Related Research

Abstract

We present the ﬁrst demonstration of high-power, reversed Cherenkov wakeﬁeld radiation by electron bunches passing through a metamaterial structure. The structure supports a fundamental TM-like mode with a negative group velocity leading to reversed Cherenkov radiation, which was clearly veriﬁed in the experiments. Single 45 nC electron bunches of 65 MeV traversing the structure generated up to 25 MW in 2 ns pulses at 11.4 GHz, in excellent agreement with theory. Two bunches of 85 nC with appropriate temporal spacing generated up to 80 MW by coherent wakeﬁeld superposition, the highest RF power that metamaterial structures ever experienced without damage. These results demonstrate the unique features of metamaterial structures that are very attractive for future high-gradient, wakeﬁeld accelerators, including two-beam and collinear accelerators. Advantages include the high shunt impedance for high power generation and high gradient acceleration; the simple and rugged structure; and a large parameter space for optimization.

Authors:

Lu, Xueying; Shapiro, Michael A.; Mastovsky, Ivan; Temkin, Richard J.; Conde, Manoel; Power, John G.; Shao, Jiahang; Wisniewski, Eric E.; Jing, Chunguang

OSTI

Publication Date:: Thu Feb 14 04:00:00 UTC 2019

DOE Contract Number:: SC0015566

Research Org.:: Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), High Energy Physics (HEP)

Subject:: 43 PARTICLE ACCELERATORS

OSTI Identifier:: 1881277

DOI:: https://doi.org/10.7910/DVN/6PLBO1

Citation Formats


                    Lu, Xueying, Shapiro, Michael A., Mastovsky, Ivan, Temkin, Richard J., Conde, Manoel, Power, John G., Shao, Jiahang, Wisniewski, Eric E., and Jing, Chunguang. Generation of High-Power, Reversed-Cherenkov Wakefield Radiation in a Metamaterial Structure.  United States: N. p., 2019. 
        Web.  doi:10.7910/DVN/6PLBO1.

Copy to clipboard


                    Lu, Xueying, Shapiro, Michael A., Mastovsky, Ivan, Temkin, Richard J., Conde, Manoel, Power, John G., Shao, Jiahang, Wisniewski, Eric E., & Jing, Chunguang. Generation of High-Power, Reversed-Cherenkov Wakefield Radiation in a Metamaterial Structure.  United States.  doi:https://doi.org/10.7910/DVN/6PLBO1

Copy to clipboard


                    Lu, Xueying, Shapiro, Michael A., Mastovsky, Ivan, Temkin, Richard J., Conde, Manoel, Power, John G., Shao, Jiahang, Wisniewski, Eric E., and Jing, Chunguang. 2019.  
"Generation of High-Power, Reversed-Cherenkov Wakefield Radiation in a Metamaterial Structure".  United States.  doi:https://doi.org/10.7910/DVN/6PLBO1.  https://www.osti.gov/servlets/purl/1881277. Pub date:Thu Feb 14 04:00:00 UTC 2019

Copy to clipboard


                    
@article{osti_1881277,

  title        = {Generation of High-Power, Reversed-Cherenkov Wakefield Radiation in a Metamaterial Structure},

  author       = {Lu, Xueying and Shapiro, Michael A. and Mastovsky, Ivan and Temkin, Richard J. and Conde, Manoel and Power, John G. and Shao, Jiahang and Wisniewski, Eric E. and Jing, Chunguang},

  abstractNote = {We present the ﬁrst demonstration of high-power, reversed Cherenkov wakeﬁeld radiation by electron bunches passing through a metamaterial structure. The structure supports a fundamental TM-like mode with a negative group velocity leading to reversed Cherenkov radiation, which was clearly veriﬁed in the experiments. Single 45 nC electron bunches of 65 MeV traversing the structure generated up to 25 MW in 2 ns pulses at 11.4 GHz, in excellent agreement with theory. Two bunches of 85 nC with appropriate temporal spacing generated up to 80 MW by coherent wakeﬁeld superposition, the highest RF power that metamaterial structures ever experienced without damage. These results demonstrate the unique features of metamaterial structures that are very attractive for future high-gradient, wakeﬁeld accelerators, including two-beam and collinear accelerators. Advantages include the high shunt impedance for high power generation and high gradient acceleration; the simple and rugged structure; and a large parameter space for optimization.},

  doi          = {10.7910/DVN/6PLBO1},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Thu Feb 14 04:00:00 UTC 2019},

  month        = {Thu Feb 14 04:00:00 UTC 2019}

}

Copy to clipboard

Dataset:

View Dataset

DOI: https://doi.org/10.7910/DVN/6PLBO1

Save / Share:

Export Metadata

Save to My Library

Similar records in DOE Data Explorer and OSTI.GOV collections:

Generation of High-Power, Reversed-Cherenkov Wakefield Radiation in a Metamaterial Structure

Journal Article Lu, Xueying ; Shapiro, Michael A. ; Matstovsky, Ivan ; ... - Physical Review Letters

We present the first demonstration of high-power, reversed-Cherenkov wakefield radiation by electron bunches passing through a metamaterial structure. The structure supports a fundamental transverse magnetic mode with a negative group velocity leading to reversed-Cherenkov radiation, which was clearly verified in the experiments. Single 45 nC electron bunches of 65 MeV traversing the structure generated up to 25 MW in 2 ns pulses at 11.4 GHz, in excellent agreement with theory. Two bunches of 85 nC with appropriate temporal spacing generated up to 80 MW by coherent wakefield superposition, the highest rf power that metamaterial structures ever experienced without damage. Thesemore »« less
Generation of High-Power, Reversed-Cherenkov Wakefield Radiation in a Metamaterial Structure

Journal Article Lu, Xueying ; Shapiro, Michael A. ; Mastovsky, Ivan ; ... - Physical Review Letters

Here, we present the first demonstration of high-power, reversed-Cherenkov wakefield radiation by electron bunches passing through a metamaterial structure. The structure supports a fundamental transverse magnetic mode with a negative group velocity leading to reversed-Cherenkov radiation, which was clearly verified in the experiments. Single 45 nC electron bunches of 65 MeV traversing the structure generated up to 25 MW in 2 ns pulses at 11.4 GHz, in excellent agreement with theory. Two bunches of 85 nC with appropriate temporal spacing generated up to 80 MW by coherent wakefield superposition, the highest rf power that metamaterial structures ever experienced without damage.more »« less
Generation of High-Power, Reversed-Cherenkov Wakefield Radiation in a Metamaterial Structure

Journal Article Lu, Xueying ; Shapiro, Michael A. ; Mastovsky, Ivan ; ... - Physical Review Letters

Here, we present the first demonstration of high-power, reversed-Cherenkov wakefield radiation by electron bunches passing through a metamaterial structure. The structure supports a fundamental transverse magnetic mode with a negative group velocity leading to reversed-Cherenkov radiation, which was clearly verified in the experiments. Single 45 nC electron bunches of 65 MeV traversing the structure generated up to 25 MW in 2 ns pulses at 11.4 GHz, in excellent agreement with theory. Two bunches of 85 nC with appropriate temporal spacing generated up to 80 MW by coherent wakefield superposition, the highest rf power that metamaterial structures ever experienced without damage.more »« less
Linear Theory of Instabilities Generated by an Electron Beam in a Metamaterial-Loaded Waveguide

Dataset Lu, Xueying ; Shapiro, Michael A. ; Temkin, Richard J.

We present the linear theory of the starting current of Cherenkov-cyclotron and Cherenkov instabilities generated by an electron beam passing through a metamaterial-loaded waveguide. Effective medium theory is used to represent the metamaterial structure properties. The theory predicts that the instabilities compete, with the Cherenkov-cyclotron mode dominating at lower magnetic ﬁeld and the Cherenkov instability at higher magnetic ﬁeld. The theoretical results are compared to results from recent experiments at MIT using a 490 kV, 84 A electron beam in magnetic ﬁelds of 300 G to 1500 G. For an effective medium model ﬁtted to the MIT experimental parameters, theorymore »« less
Modeling of the interaction of a volumetric metallic metamaterial structure with a relativistic electron beam

Dataset Lu, Xueying ; Shapiro, Michael A. ; Temkin, Richard J.

We present the design of a volumetric metamaterial (MTM) structure and its interaction with a relativistic electron beam. This novel structure has promising applications in particle beam diagnostics, acceleration and microwave generation. The volumetric MTM has a cubic unit cell allowing structures of arbitrary size to be configured as an array of identical cells. This structure allows the exploration of the properties of a metamaterial structure without having to consider substrates or other supporting elements. The dispersion characteristics of the unit cell are obtained using eigenmode simulations in the HFSS code and also using an effective medium theory with spatialmore »« less

Similar Records