49 citations · 269 across the 42 of their papers we have counts for
14 papers · 1 filter
3D Printing as a Rapid Prototyping Approach for Novel RF Cavity Designs
David Sims, Benjamin Sims, Brian Wright +2
3D-printing of radiofrequency (RF) cavity resonators could provide a cost-effective solution that enables rapid prototyping and design flexibility compared to traditional fabricati…
Heating of Cs2Te Photocathode via Field Emission and RF Pulsed Heating: Implication Toward Breakdown
Ryo Shinohara, Soumendu Bagchi, Evgenya Simakov +2
The occurrence of radio-frequency (rf) breakdown limits operational electromagnetic gradients in accelerator structures. Experimental evidence often suggests that breakdown events…
Thermal Emittance Isolation by Cathode Retraction
Benjamin Sims, John W. Lewellen, Xu Ting +1
In this work, a combination of cathode retraction and two-slit emittance measurement technique is proposed as an advanced means to individually modify emittance growth components,…
Emittance Mapping in rf Guns
Benjamin Sims, Sergey V. Baryshev
This paper discusses the trends and trade-offs between transverse sigma x and longitudinal sigma z bunch dimensions, rf injector gradient, bunch charge, and intrinsic electron mean…
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…
RF Accelerator Technology R&D: Report of AF7-rf Topical Group to Snowmass 2021
Sergey Belomestnykh, Emilio A. Nanni, Hans Weise +18
Accelerator radio frequency (RF) technology has been and remains critical for modern high energy physics (HEP) experiments based on particle accelerators. Tremendous progress in ad…
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…
Evidence for Anti-Dowell-Schmerge Process in Photoemission from Diamond
Tanvi Nikhar, Sergey V. Baryshev, Gowri Adhikari +1
A great number of metal and semiconductor photocathodes, which are of high practical importance for photoinjector applications, closely follow the 1/3 gradient Dowell-Schmerge (DS)…
FEgen (v.1): Field Emission Distribution Generator Freeware Based on Fowler-Nordheim Equation
Emily Jevarjian, Mitchell Schneider, Sergey V. Baryshev
FEgen is a comprehensive user interface designed to create initial particle distributions for field emission sources operated in rf guns (additional capability exists for dc pulsed…
Demonstration of Planar Ultrananocrystalline Diamond Field Emission Source Operating in SRF Injector at 2 Kelvin
Sergey V. Baryshev, Erdong Wang, Chunguang Jing +9
Reported here is the first demonstration of electron beam generation in an SRF TESLA 1.3 GHz gun equipped with field emission cathode when operated at 2 Kelvin. The cathode is subm…
Nano-Diamond Thin Film Field Emitter Cartridge for Miniature High Gradient Radiofrequency -band Electron Injector
Jiaqi Qiu, Stanislav S. Baturin, Kiran K. Kovi +7
The complete design, fabrication, and performance evaluation of a compact, single cell, -band (9 GHz) electron injector based on a field emission cathode (FEC) are present…
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…