SRF2011 - List of Authors (Beard, C.D.)

Paper	Title	Page
MOPO020	Nine-cell Elliptical Cavity Development at TRIUMF	107
	V. Zvyagintsev, C.D. Beard, A. Grassellino, D. Kaltchev, P. Kolb, R.E. Laxdal, D. Longuevergne, B.S. Waraich TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada M. Ahammed DAE/VECC, Calcutta, India R.O. Bolgov, N.P. Sobenin MEPhI, Moscow, Russia R. Edinger PAVAC, Richmond, B.C., Canada
	The superconducting e-Linac project at TRIUMF requires a new nine cell elliptical cavity at 1.3GHz of TESLA influenced design capable of providing a CW accelerating voltage of 10MV at 10mA of beam intensity. This corresponds to a challenging 100kW of beam loaded rf power and a Beam Break-up (BBU)threshold in multi-pass mode of Rd/Q*QL=10MOhms. For this purpose we use two opposed CPI 60kW cw rated couplers. Another challenge is to provide HOM damping for the possibility of multi-pass ERL operation by means of end cell optimization and higher order mode (HOM) dampers. Results of the cavity design work including developments toward a passive HOM damper will be discussed.

THIOB06	Recents Developments in SRF at TRIUMF	685
	R.E. Laxdal, C.D. Beard, A. Grassellino, P. Kolb, D. Longuevergne, V. Zvyagintsev TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada R.S. Orr, W. Trischuk University of Toronto, Toronto, Ontario, Canada
	The TRIUMF SRF program follows three basic paths: the support of the existing installed superconducting heavy ion linac with forty quarter wave cavities, the development of infrastructure and cavities for the new e-Linac project at 1.3GHz and fundamental studies to support student projects. Work on the quarter waves primarily involves determining optimum processing steps to improve cavity performance. The e-Linac cavity is a variant of the Tesla nine cell cavity modified to allow the acceleration of 10mA in cw mode. Fundamental studies on RRR niobium have been done at the Muon Spin Resonance facility at TRIUMF to characterize the flux of first entry for different processing of the niobium. THe program will be summarized.

Paper

Title

Page

Nine-cell Elliptical Cavity Development at TRIUMF

107

V. Zvyagintsev, C.D. Beard, A. Grassellino, D. Kaltchev, P. Kolb, R.E. Laxdal, D. Longuevergne, B.S. Waraich
TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada
M. Ahammed
DAE/VECC, Calcutta, India
R.O. Bolgov, N.P. Sobenin
MEPhI, Moscow, Russia
R. Edinger
PAVAC, Richmond, B.C., Canada

The superconducting e-Linac project at TRIUMF requires a new nine cell elliptical cavity at 1.3GHz of TESLA influenced design capable of providing a CW accelerating voltage of 10MV at 10mA of beam intensity. This corresponds to a challenging 100kW of beam loaded rf power and a Beam Break-up (BBU)threshold in multi-pass mode of Rd/Q*QL=10MOhms. For this purpose we use two opposed CPI 60kW cw rated couplers. Another challenge is to provide HOM damping for the possibility of multi-pass ERL operation by means of end cell optimization and higher order mode (HOM) dampers. Results of the cavity design work including developments toward a passive HOM damper will be discussed.

THIOB06

Recents Developments in SRF at TRIUMF

685

R.E. Laxdal, C.D. Beard, A. Grassellino, P. Kolb, D. Longuevergne, V. Zvyagintsev
TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada
R.S. Orr, W. Trischuk
University of Toronto, Toronto, Ontario, Canada

The TRIUMF SRF program follows three basic paths: the support of the existing installed superconducting heavy ion linac with forty quarter wave cavities, the development of infrastructure and cavities for the new e-Linac project at 1.3GHz and fundamental studies to support student projects. Work on the quarter waves primarily involves determining optimum processing steps to improve cavity performance. The e-Linac cavity is a variant of the Tesla nine cell cavity modified to allow the acceleration of 10mA in cw mode. Fundamental studies on RRR niobium have been done at the Muon Spin Resonance facility at TRIUMF to characterize the flux of first entry for different processing of the niobium. THe program will be summarized.