SRF2011 - List of Authors (Hopper, C.S.)

Paper	Title	Page
MOPO022	Higher Order Mode Properties of Superconducting Two-Spoke Cavities	114
	C.S. Hopper ODU, Norfolk, Virginia, USA J.R. Delayen JLAB, Newport News, Virginia, USA R.G. Olave Old Dominion University, Norfolk, Virginia, USA
	Multi-Spoke cavities lack the cylindrical symmetry that many other cavity types have, which leads to a more complex Higher Order Mode (HOM) spectrum. In addition, spoke cavities offer a large velocity acceptance which means we must perform a detailed analysis of the particle velocity dependence for each mode’s R/Q. We present here a study of the HOM properties of two-spoke cavities designed for high-velocity applications. Frequencies, R/Q and field profiles of HOMs have been calculated and are reported.

MOPO033	Design of Superconducting Multi-Spoke Cavities for High-Velocity Applications	154
	C.S. Hopper ODU, Norfolk, Virginia, USA J.R. Delayen JLAB, Newport News, Virginia, USA
	Superconducting spoke cavities have been designed and tested for particle velocities up to β ~ 0.6 and are currently being designed for velocities up to β = 1. We present the electromagnetic designs for two-spoke cavities operating at 325 MHz for β = 0.82 and β = 1.

Paper

Title

Page

Higher Order Mode Properties of Superconducting Two-Spoke Cavities

114

C.S. Hopper
ODU, Norfolk, Virginia, USA
J.R. Delayen
JLAB, Newport News, Virginia, USA
R.G. Olave
Old Dominion University, Norfolk, Virginia, USA

Multi-Spoke cavities lack the cylindrical symmetry that many other cavity types have, which leads to a more complex Higher Order Mode (HOM) spectrum. In addition, spoke cavities offer a large velocity acceptance which means we must perform a detailed analysis of the particle velocity dependence for each mode’s R/Q. We present here a study of the HOM properties of two-spoke cavities designed for high-velocity applications. Frequencies, R/Q and field profiles of HOMs have been calculated and are reported.

MOPO033

Design of Superconducting Multi-Spoke Cavities for High-Velocity Applications

154

C.S. Hopper
ODU, Norfolk, Virginia, USA
J.R. Delayen
JLAB, Newport News, Virginia, USA

Superconducting spoke cavities have been designed and tested for particle velocities up to β ~ 0.6 and are currently being designed for velocities up to β = 1. We present the electromagnetic designs for two-spoke cavities operating at 325 MHz for β = 0.82 and β = 1.