PAC2013 - List of Authors (Pfeffer, H.)

Paper	Title	Page
THPBA17	Status Of PXIE 200 Ω MEBT Kicker Development	1268
	G.W. Saewert, M.H. Awida, B. Chase, H. Pfeffer, D. Wolff Fermilab, Batavia, USA D. Frolov Kuban State University, Krasnodar, Russia
	Funding: Fermi Research Alliance, LLC, under Contract No. DE-AC02-07CH11359 with the U. S. Department of Energy The proposed Project X machine at Fermilab must deliver a widely varying bunch pattern to provide beam to several experiments quasi-simultaneously. Beam will be chopped on a bunch-by-bunch basis. The Project X Injector Experiment (PXIE) will be the test bed to demonstrate the beam chopping ability to form an arbitrary bunch pattern. The chopper system will selectively kick out individual beam bunches in the 2.1 MeV Medium Energy Beam Transport (MEBT) section downstream of the RFQ producing a CW 162.5 MHz H⁻ bunch stream. The chopper system will consist of two individual traveling wave kickers working in sync to deflect undesired beam bunches to an absorber. Presently two kicker system versions are under development. One proposed version is a 50 Ω planar structure driven by a ±250 V linear amplifier. The second proposed version is a 200 Ω helical, microstrip line structure driven by a 500 V bipolar switch. This paper describes the development status of the 200 Ω version and includes the design concept, comparison of 3D modeling work with prototype measurements, 200 Ω hardware description and progress with the driver.

Paper

Title

Page

Status Of PXIE 200 Ω MEBT Kicker Development

1268

G.W. Saewert, M.H. Awida, B. Chase, H. Pfeffer, D. Wolff
Fermilab, Batavia, USA
D. Frolov
Kuban State University, Krasnodar, Russia

Funding: Fermi Research Alliance, LLC, under Contract No. DE-AC02-07CH11359 with the U. S. Department of Energy
The proposed Project X machine at Fermilab must deliver a widely varying bunch pattern to provide beam to several experiments quasi-simultaneously. Beam will be chopped on a bunch-by-bunch basis. The Project X Injector Experiment (PXIE) will be the test bed to demonstrate the beam chopping ability to form an arbitrary bunch pattern. The chopper system will selectively kick out individual beam bunches in the 2.1 MeV Medium Energy Beam Transport (MEBT) section downstream of the RFQ producing a CW 162.5 MHz H⁻ bunch stream. The chopper system will consist of two individual traveling wave kickers working in sync to deflect undesired beam bunches to an absorber. Presently two kicker system versions are under development. One proposed version is a 50 Ω planar structure driven by a ±250 V linear amplifier. The second proposed version is a 200 Ω helical, microstrip line structure driven by a 500 V bipolar switch. This paper describes the development status of the 200 Ω version and includes the design concept, comparison of 3D modeling work with prototype measurements, 200 Ω hardware description and progress with the driver.