PAC2013 - List of Authors (Vrielink, A.R.)

Paper	Title	Page
THPAC01	Longitudinal Emittance Measurement System for the ARIEL Electron Linac	1139
	A.R. Vrielink, Y.-C. Chao, C. Gong, R.E. Laxdal, V. Zvyagintsev TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada
	As part of the ARIEL e-LINAC project at TRIUMF, a 1.3 GHz single-cell, room-temperature deflecting cavity has been developed to study the temporal distribution of an electron beam from a 300 kV thermionic gun. Beam bunches on the order of 100-200 ps long are produced from a biased grid with a 650MHz RF voltage superimposed to periodically allow release of electrons. The RF deflector operates in a TM110-like mode, deflecting the electrons vertically with a magnitude dependent on their arrival phase. The cavity RF performance has been characterized through signal level and beam testing. The deflector is installed as part of a longitudinal emittance measurement system with beam collimation, a 90 degree analyzing magnet, the deflecting cavity and a final view screen. Initial beam bunch length measurements using this RF cavity, conducted in conjunction with the initial commissioning using a 100kV electron-gun and a 1.3GHz buncher, are presented. The beam bunch length was extracted by comparing data collected at a screen downstream of the deflector to an analytical model based on linear time-invariant system theory and 3D simulation results using General Particle Tracer.

Paper

Title

Page

Longitudinal Emittance Measurement System for the ARIEL Electron Linac

1139

A.R. Vrielink, Y.-C. Chao, C. Gong, R.E. Laxdal, V. Zvyagintsev
TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada

As part of the ARIEL e-LINAC project at TRIUMF, a 1.3 GHz single-cell, room-temperature deflecting cavity has been developed to study the temporal distribution of an electron beam from a 300 kV thermionic gun. Beam bunches on the order of 100-200 ps long are produced from a biased grid with a 650MHz RF voltage superimposed to periodically allow release of electrons. The RF deflector operates in a TM110-like mode, deflecting the electrons vertically with a magnitude dependent on their arrival phase. The cavity RF performance has been characterized through signal level and beam testing. The deflector is installed as part of a longitudinal emittance measurement system with beam collimation, a 90 degree analyzing magnet, the deflecting cavity and a final view screen. Initial beam bunch length measurements using this RF cavity, conducted in conjunction with the initial commissioning using a 100kV electron-gun and a 1.3GHz buncher, are presented. The beam bunch length was extracted by comparing data collected at a screen downstream of the deflector to an analytical model based on linear time-invariant system theory and 3D simulation results using General Particle Tracer.