PAC2013 - List of Authors (Newsham, D.J.)

Paper	Title	Page
WEPHO13	Test of an L-Band Energy-Efficiency Solid State RF Power Source	960
	X. Chang, N. Barov, D.J. Newsham, D. Wu Far-Tech, Inc., San Diego, California, USA
	Funding: Work supported by DOE Office of Nuclear Physics, DOE-SBIR #DE-SC0002529 We present the test results of a 1.497 GHz Solid State RF Power Source for the CEBAF linac at Thomas Jefferson National Accelerator Facility. The power amplifier was designed to operate at output power of 6.4 kW, with an overall efficiency greater than 55% at peak power, and is sufficiently compact to fit the existing rack space and cooling requirements at the installation site. Our solid state amplifier is designed for high efficiency, band width of more than ±5MHz at 1.497GHz, and long lifetime. The test results of the whole unit test will be shown.

WEPMA11	Progress Toward the Development of a Rapidly Tunable RF Cavity	1004
	D.J. Newsham, X. Chang, J.R. Thompson Far-Tech, Inc., San Diego, California, USA
	Funding: Work supported by DOE Office of High Energy Physics, DOE-SBIR #DE-SC0006225. A major bottleneck in the development of compact, rapid-cycling particle accelerators is the ability to maintain phase coherence between the short orbit time of the particle bunch and the phase of the accelerating RF field. A ferroelectric loaded RF cavity can achieve the needed phase shift in a significantly shorter time than alternative technologies. The current status of the development of such a cavity including the cold test of a preliminary cartridge and the testing of the bias voltage subsystem will be presented.

THPSM14	Construction and Testing of the Dual Slot Resonance Linac	1415
	N. Barov, R.H. Miller, D.J. Newsham Far-Tech, Inc., San Diego, California, USA
	The dual slot resonance linac (DSRL) is a novel method of providing enhanced coupling to a coupled cavity linac system, resulting in very strong coupling. For the 11-cell, 2856 MHz structure described here, the accelerator mode bandwidth exceeds 700 MHz, about an order of magnitude greater than many traditional side-coupled and axis-coupled linacs. The strong coupling promotes phase and amplitude stabilization, and offers decreased sensitivity to fabrication errors. We describe the construction, tuning, and RF conditioning of the prototype structure.

Paper

Title

Page

Test of an L-Band Energy-Efficiency Solid State RF Power Source

960

X. Chang, N. Barov, D.J. Newsham, D. Wu
Far-Tech, Inc., San Diego, California, USA

Funding: Work supported by DOE Office of Nuclear Physics, DOE-SBIR #DE-SC0002529
We present the test results of a 1.497 GHz Solid State RF Power Source for the CEBAF linac at Thomas Jefferson National Accelerator Facility. The power amplifier was designed to operate at output power of 6.4 kW, with an overall efficiency greater than 55% at peak power, and is sufficiently compact to fit the existing rack space and cooling requirements at the installation site. Our solid state amplifier is designed for high efficiency, band width of more than ±5MHz at 1.497GHz, and long lifetime. The test results of the whole unit test will be shown.

WEPMA11

Progress Toward the Development of a Rapidly Tunable RF Cavity

1004

D.J. Newsham, X. Chang, J.R. Thompson
Far-Tech, Inc., San Diego, California, USA

Funding: Work supported by DOE Office of High Energy Physics, DOE-SBIR #DE-SC0006225.
A major bottleneck in the development of compact, rapid-cycling particle accelerators is the ability to maintain phase coherence between the short orbit time of the particle bunch and the phase of the accelerating RF field. A ferroelectric loaded RF cavity can achieve the needed phase shift in a significantly shorter time than alternative technologies. The current status of the development of such a cavity including the cold test of a preliminary cartridge and the testing of the bias voltage subsystem will be presented.

THPSM14

Construction and Testing of the Dual Slot Resonance Linac

1415

N. Barov, R.H. Miller, D.J. Newsham
Far-Tech, Inc., San Diego, California, USA

The dual slot resonance linac (DSRL) is a novel method of providing enhanced coupling to a coupled cavity linac system, resulting in very strong coupling. For the 11-cell, 2856 MHz structure described here, the accelerator mode bandwidth exceeds 700 MHz, about an order of magnitude greater than many traditional side-coupled and axis-coupled linacs. The strong coupling promotes phase and amplitude stabilization, and offers decreased sensitivity to fabrication errors. We describe the construction, tuning, and RF conditioning of the prototype structure.