RFQ device for accelerating particles
Abstract
A superconducting radio frequency quadrupole (RFQ) device includes four spaced elongated, linear, tubular rods disposed parallel to a charged particle beam axis, with each rod supported by two spaced tubular posts oriented radially with respect to the beam axis. The rod and post geometry of the device has four-fold rotation symmetry, lowers the frequency of the quadrupole mode below that of the dipole mode, and provides large dipole-quadrupole mode isolation to accommodate a range of mechanical tolerances. The simplicity of the geometry of the structure, which can be formed by joining eight simple T-sections, provides a high degree of mechanical stability, is insensitive to mechanical displacement, and is particularly adapted for fabrication with superconducting materials such as niobium.
- Inventors:
-
- Park Ridge, IL
- Naperville, IL
- Issue Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- OSTI Identifier:
- 869920
- Patent Number(s):
- 5422549
- Assignee:
- University of Chicago (Chicago, IL)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR H05H - PLASMA TECHNIQUE
- DOE Contract Number:
- W-31109-ENG-38
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- rfq; device; accelerating; particles; superconducting; radio; frequency; quadrupole; spaced; elongated; linear; tubular; rods; disposed; parallel; charged; particle; beam; axis; rod; supported; posts; oriented; radially; respect; post; geometry; four-fold; rotation; symmetry; lowers; mode; below; dipole; provides; dipole-quadrupole; isolation; accommodate; range; mechanical; tolerances; simplicity; structure; formed; joining; eight; simple; t-sections; degree; stability; insensitive; displacement; particularly; adapted; fabrication; materials; niobium; rod support; disposed parallel; conducting material; particularly adapted; radio frequency; particle beam; charged particle; superconducting material; superconducting materials; mechanical stability; beam axis; frequency quadrupole; rods disposed; rod supported; quadrupole mode; mechanical displacement; superconducting radio; /315/
Citation Formats
Shepard, Kenneth W, and Delayen, Jean R. RFQ device for accelerating particles. United States: N. p., 1995.
Web.
Shepard, Kenneth W, & Delayen, Jean R. RFQ device for accelerating particles. United States.
Shepard, Kenneth W, and Delayen, Jean R. Sun .
"RFQ device for accelerating particles". United States. https://www.osti.gov/servlets/purl/869920.
@article{osti_869920,
title = {RFQ device for accelerating particles},
author = {Shepard, Kenneth W and Delayen, Jean R},
abstractNote = {A superconducting radio frequency quadrupole (RFQ) device includes four spaced elongated, linear, tubular rods disposed parallel to a charged particle beam axis, with each rod supported by two spaced tubular posts oriented radially with respect to the beam axis. The rod and post geometry of the device has four-fold rotation symmetry, lowers the frequency of the quadrupole mode below that of the dipole mode, and provides large dipole-quadrupole mode isolation to accommodate a range of mechanical tolerances. The simplicity of the geometry of the structure, which can be formed by joining eight simple T-sections, provides a high degree of mechanical stability, is insensitive to mechanical displacement, and is particularly adapted for fabrication with superconducting materials such as niobium.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {1}
}
Works referenced in this record:
Development of the Different RFQ Accelerating Structures and Operation Experience
journal, August 1983
- Klein, H.
- IEEE Transactions on Nuclear Science, Vol. 30, Issue 4