IPAC2013 - List of Authors (Williams, M.)

Paper	Title	Page
THPEA062	Magnetic Field Measurements for the IAC-RadiaBeam THz Project	3282
	P. Buaphad, Y. Kim, M. Williams ISU, Pocatello, Idaho, USA A. Andrews, T. Downer, C.F. Eckman, Y. Kim, M. Smith IAC, Pocatello, IDAHO, USA
	At the Idaho Accelerator Center (IAC) of Idaho State University, recently, a new chicane with four dipoles and quadrupole triplet magnets were installed in a 44 MeV linac to perform the IAC-RadiaBeam Terahertz (THz) project. To generate high power THz radiation, a THz radiator with numerous periodic gratings was also installed downstream of the quadrupole triplet. However, the electron beam shape at the radiator has to be horizontally focused strip-like one due to a tiny radiator gap with a width of 1.2 mm, and electron bunch length should be about a few picosecond (ps) to generate high power THz radiation in the radiator. By using the quadrupole triplet and chicane dipoles, we can control the transverse beam profile and bunch length freely. In this paper, we report the measured field maps of the dipole and quadrupole magnets, their effective lengths, and field strength or gradient as a function of the magnet power supply current.

Paper

Title

Page

Magnetic Field Measurements for the IAC-RadiaBeam THz Project

3282

P. Buaphad, Y. Kim, M. Williams
ISU, Pocatello, Idaho, USA
A. Andrews, T. Downer, C.F. Eckman, Y. Kim, M. Smith
IAC, Pocatello, IDAHO, USA

At the Idaho Accelerator Center (IAC) of Idaho State University, recently, a new chicane with four dipoles and quadrupole triplet magnets were installed in a 44 MeV linac to perform the IAC-RadiaBeam Terahertz (THz) project. To generate high power THz radiation, a THz radiator with numerous periodic gratings was also installed downstream of the quadrupole triplet. However, the electron beam shape at the radiator has to be horizontally focused strip-like one due to a tiny radiator gap with a width of 1.2 mm, and electron bunch length should be about a few picosecond (ps) to generate high power THz radiation in the radiator. By using the quadrupole triplet and chicane dipoles, we can control the transverse beam profile and bunch length freely. In this paper, we report the measured field maps of the dipole and quadrupole magnets, their effective lengths, and field strength or gradient as a function of the magnet power supply current.