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Title: Distributed coupling and multi-frequency microwave accelerators

Abstract

A microwave circuit for a linear accelerator has multiple metallic cell sections, a pair of distribution waveguide manifolds, and a sequence of feed arms connecting the manifolds to the cell sections. The distribution waveguide manifolds are connected to the cell sections so that alternating pairs of cell sections are connected to opposite distribution waveguide manifolds. The distribution waveguide manifolds have concave modifications of their walls opposite the feed arms, and the feed arms have portions of two distinct widths. In some embodiments, the distribution waveguide manifolds are connected to the cell sections by two different types of junctions adapted to allow two frequency operation. The microwave circuit may be manufactured by making two quasi-identical parts, and joining the two parts to form the microwave circuit, thereby allowing for many manufacturing techniques including electron beam welding, and thereby allowing the use of un-annealled copper alloys, and hence greater tolerance to high gradient operation.

Inventors:
; ;
Issue Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1260195
Patent Number(s):
9386682
Application Number:
14/795,490
Assignee:
The Board of Trustees of the Leland Stanford Junior University (Palo Alto, CA)
Patent Classifications (CPCs):
H - ELECTRICITY H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR H05H - PLASMA TECHNIQUE
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01P - WAVEGUIDES
DOE Contract Number:  
AC02-76SF00515
Resource Type:
Patent
Resource Relation:
Patent File Date: 2015 Jul 09
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS

Citation Formats

Tantawi, Sami G., Li, Zenghai, and Borchard, Philipp. Distributed coupling and multi-frequency microwave accelerators. United States: N. p., 2016. Web.
Tantawi, Sami G., Li, Zenghai, & Borchard, Philipp. Distributed coupling and multi-frequency microwave accelerators. United States.
Tantawi, Sami G., Li, Zenghai, and Borchard, Philipp. Tue . "Distributed coupling and multi-frequency microwave accelerators". United States. https://www.osti.gov/servlets/purl/1260195.
@article{osti_1260195,
title = {Distributed coupling and multi-frequency microwave accelerators},
author = {Tantawi, Sami G. and Li, Zenghai and Borchard, Philipp},
abstractNote = {A microwave circuit for a linear accelerator has multiple metallic cell sections, a pair of distribution waveguide manifolds, and a sequence of feed arms connecting the manifolds to the cell sections. The distribution waveguide manifolds are connected to the cell sections so that alternating pairs of cell sections are connected to opposite distribution waveguide manifolds. The distribution waveguide manifolds have concave modifications of their walls opposite the feed arms, and the feed arms have portions of two distinct widths. In some embodiments, the distribution waveguide manifolds are connected to the cell sections by two different types of junctions adapted to allow two frequency operation. The microwave circuit may be manufactured by making two quasi-identical parts, and joining the two parts to form the microwave circuit, thereby allowing for many manufacturing techniques including electron beam welding, and thereby allowing the use of un-annealled copper alloys, and hence greater tolerance to high gradient operation.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2016},
month = {7}
}

Patent:

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