High Gradient Wakefields in Dielectric Loaded Structures

Journal Article · Mon Nov 27 04:00:00 EST 2006 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2409144· OSTI ID:20898680

Conde, M E; Franchini, F; Gai, W; Konecny, R; Liu, W; Power, J G; Yusof, Z ^[1]; Antipov, S; Gao, F; Wang, H ^[2]; Jing, C ^[3]

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1. Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439 (United States)
2. Illinois Institute of Technology, 3300 South Federal Street, Chicago, IL 60616 (United States)
3. Euclid TechLabs, 5900 Harper Road, Solon, OH 44139 (United States)

Dielectric loaded wakefield structures have potential to be used as high gradient accelerator components. Using the high current drive beam at the Argonne Wakefield Accelerator Facility, we employed cylindrical dielectric loaded wakefield structures to generate accelerating fields of up to 86 MV/m, at 10 GHz. Short electron bunches of up to 86 nC are used to drive these fields, either as single bunches or as bunch trains. The structures consist of cylindrical ceramic tubes (cordierite) with a dielectric constant of 4.76, inserted into cylindrical copper waveguides. These standing-wave structures have a field probe near the outer diameter of the dielectric, in order to sample the RF fields generated by the electron bunches. Monitoring the field probe signal serves to verify the absence of electric breakdown in the structures. MAFIA simulations are used to calculate the amplitude of the fields generated by the traversing electrons bunches.

• OSTI ID: 20898680
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 877; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BEAM BUNCHING
BREAKDOWN
CERAMICS
COMPUTERIZED SIMULATION
COPPER
DIELECTRIC MATERIALS
ELECTRON BEAMS
GHZ RANGE 01-100
MONITORING
PERMITTIVITY
STANDING WAVES
WAKEFIELD ACCELERATORS
WAVEGUIDES