23 citations · 127 across the 13 of their papers we have counts for
14 papers
Evaluating Effects of Geometry and Material Composition on Production of Transversely Shaped Beams from Diamond Field Emission Array Cathodes
Mitchell E. Schneider, Heather Andrews, Sergey V. Baryshev +8
Field emission cathodes (FECs) are attractive for the next generation of injectors due to their ability to provide high current density bright beams with low intrinsic emittance. O…
Advanced RF Structures for Wakefield Acceleration and High-Gradient Research
Xueying Lu, Jiahang Shao, John Power +28
Structure wakefield acceleration (SWFA) is one of the most promising AAC schemes in several recent strategic reports, including DOE's 2016 AAC Roadmap, report on the Advanced and N…
Demonstration of sub-GV/m Accelerating Field in a Photoemission Electron Gun Powered by Nanosecond -Band Radiofrequency Pulses
W. H. Tan, S. Antipov, D. S. Doran +11
Radiofrequency (RF) electron guns operating at high accelerating gradients offer a pathway to producing bright electron bunches. Such beams are expected to revolutionize many areas…
Continuous and Coordinated Efforts of Structure Wakefield Acceleration (SWFA) Development for an Energy Frontier Machine
Chunguang Jing, John Power, Jiahang Shao +14
Structure wakefield acceleration (SWFA) is well suited for the linear collider (LC) application due to its natural ability to accelerate positrons and preserve emittance. Under the…
Ampere-class Bright Field Emission Cathode Operated at 100 MV/m
Mitchell Schneider, Emily Jevarjian, Tanvi Nikhar +4
High current bright sources are needed to power the next generation of compact rf and microwave systems. A major requirement is that such a source could be sustainably operated at…
FEbeam: Cavity and Electron Emission Data Conversion, Processing and Analysis. A Freeware Toolkit for RF Injectors
Mitchell Schneider, Emily Jevarjian, Jiahang Shao +1
FEbeam is a compact field emission data processing interface with the capability to analyze the field emission cathode performance in an rf injector by extracting the field enhance…
Systematic benchmarking of planar nitrogen-incorporated ultrananocrystalline diamond field emission electron source: rf conditioning and beam spatio-temporal characteristics
Jiahang Shao, Mitchell Schneider, Gongxiaohui Chen +8
Planar nitrogen-incorporated ultrananocrystalline diamond, (N)UNCD, has emerged as a unique field emission source attractive for accelerator applications because of its capability…
Development and high-power testing of an X-band dielectric-loaded power extractor
Jiahang Shao, Chunguang Jing, Eric Wisniewski +5
Dielectric loaded structures are promising candidates for use in the structure wakefield acceleration (SWFA) technique, for both the collinear wakefield and the two-beam accelerati…
Rapid thermal emittance and quantum efficiency mapping of a cesium telluride cathode in an rf photoinjector using multiple laser beamlets
Lianmin Zheng, Jiahang Shao, Eric E. Wisniewski +8
Thermal emittance and quantum efficiency (QE) are key figures of merit of photocathodes, and their uniformity is critical to high-performance photoinjectors. Several QE mapping tec…
Experimental demonstration of the correction of coupled transverse dynamics aberration in an rf photoinjector
Lianmin Zheng, Jiahang Shao, Yingchao Du +9
The production of electron bunches with low transverse emittance approaches the thermal emittance of the photocathode as various aberrations are corrected. Recently, the coupled tr…
Transition radiation in photonic topological crystals: quasi-resonant excitation of robust edge states by a moving charge
Yang Yu, Kueifu Lai, Jiahang Shao +7
We demonstrate, theoretically and experimentally, that a traveling electric charge passing from one photonic crystal into another generates edge waves -- electromagnetic modes with…
Overestimation of thermal emittance in solenoid scans due to coupled transverse motion
Lianmin Zheng, Jiahang Shao, Yingchao Du +9
The solenoid scan is a widely used method for the in-situ measurement of the thermal emittance in a photocathode gun. The popularity of this method is due to its simplicity and con…
In situ Observation of Dark Current Emission in a High Gradient RF Photocathode Gun
Jiahang Shao, Sergey P. Antipov, Sergey V. Baryshev +8
Undesirable electron field emission (a.k.a. dark current) in high gradient RF photocathode guns deteriorates the quality of photoemission current and limits the operational gradien…
Planar Ultrananocrystalline Diamond Field Emitter in Accelerator RF Electron Injector: Performance Metrics
Sergey V. Baryshev, Sergey Antipov, Jiahang Shao +7
A case performance study of a planar field emission cathode (FEC) based on nitrogen-incorporated ultrananocrystalline diamond, (N)UNCD, was carried out in an RF 1.3 GHz electron gu…