Analysis of a Symmetric Terahertz Dielectric-Lined Rectangular Structure for High Gradient Acceleration

Journal Article · Thu Jan 22 00:00:00 EST 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3080944· OSTI ID:21255258

Marshall, T C ^[1]; Sotnikov, G V ^[2]; Shchelkunov, S V ^[3]; Hirshfield, J L ^[3]

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1. Columbia University, New York, New York (United States)
2. NSC Kharkov Institute of Physics and Technology, Kharkov (Ukraine)
3. Yale University, New Haven, Connecticut (United States)

We study, using computational methods based on analytic theory as well as a PIC code, the wakefields set up in a seven-zone symmetric rectangular THZ structure, and find that for overall transverse x/y dimensions 2.121 mmx0.6 mm, two 5-GeV drive bunches (3 nC, with x/y/z dimensions 0.3/0.3/0.12 mm{sup 3} as available at SLAC) will set up an axial wakefield {approx}350 MV/m in the witness channel, with a transformer ratio {approx}18-20. The symmetry of the structure ensures not only that small transverse forces are imposed on the witness bunch, but also that the two components of transverse force are equal and opposite at the bunch location so as to enable dynamical stabilization in an accelerator comprising many modules. Transverse forces on the drive bunch tails may allow bunches to move {approx}0.5-1 m without suffering excessive erosion.

• OSTI ID: 21255258
• Journal Information: AIP Conference Proceedings, Vol. 1086, Issue 1; Conference: 13. advanced accelerator concepts workshop, Santa Cruz, CA (United States), 27 Jul - 2 Aug 2008; Other Information: DOI: 10.1063/1.3080944; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATION
DIELECTRIC MATERIALS
EROSION
GEV RANGE 01-10
STABILIZATION
STANFORD LINEAR ACCELERATOR CENTER
SYMMETRY
TRANSFORMERS
WAKEFIELD ACCELERATORS
WAVEGUIDES