2011 Particle Accelerator Conference - List of Authors (Torun, Y.)

Paper	Title	Page
MOP032	High Pressure RF Cavity Test at Fermilab	160
	B.T. Freemire, P.M. Hanlet, Y. Torun IIT, Chicago, Illinois, USA G. Flanagan, R.P. Johnson, M. Notani Muons, Inc, Batavia, USA M.R. Jana, A. Moretti, M. Popovic, A.V. Tollestrup, K. Yonehara Fermilab, Batavia, USA D.M. Kaplan Illinois Institute of Technology, Chicago, Illinois, USA
	Funding: Supported in part by DOE STTR grant DE-FG02-08ER86350 Operating a high gradient radio frequency cavity embedded in a strong magnetic field is an essential requirement for muon beam cooling. However, a magnetic field influences the maximum RF gradient due to focusing of dark current in the RF cavity. This problem is suppressed by filling the RF cavity with dense hydrogen gas. As the next step, we plan to explore the beam loading effect in the high pressure cavity by using a 400 MeV kinetic energy proton beam in the MuCool Test Area at Fermilab. We discuss the experimental setup and instrumentation.

TUP092	Multi-purpose 805 MHz Pillbox RF Cavity for Muon Acceleration Studies	1003
	G.M. Kazakevich, G. Flanagan, R.P. Johnson, M.L. Neubauer, R. Sah Muons, Inc, Batavia, USA K.C.D. Chan, A.J. Jason, S.S. Kurennoy, H.M. Miyadera, P.J. Turchi LANL, Los Alamos, New Mexico, USA A. Moretti, M. Popovic, K. Yonehara Fermilab, Batavia, USA Y. Torun IIT, Chicago, Illinois, USA
	Funding: Supported by DOE grant DE-FG-08ER86352. An 805 MHz RF pillbox cavity has been designed and constructed to investigate potential muon beam acceleration and cooling techniques. The cavity can operate in vacuum or under pressure to 100 atmospheres, at room temperature or in an LN2 bath at 77 K. The cavity is designed for easy assembly and disassembly with bolted construction using aluminum seals. The surfaces of the end walls of the cavity can be replaced with different materials such as copper, aluminum, beryllium, or molybdenum, and with different geometries such as shaped windows or grid structures. Different surface treatments such as electro polished, high-pressure water cleaned, and atomic layer deposition are being considered for testing. The cavity has been designed to fit inside the 5-Tesla solenoid in the MuCool Test Area at Fermilab. Performance of the cavity, including initial conditioning and operation in the external magnetic field will be reported.

Paper

Title

Page

High Pressure RF Cavity Test at Fermilab

160

B.T. Freemire, P.M. Hanlet, Y. Torun
IIT, Chicago, Illinois, USA
G. Flanagan, R.P. Johnson, M. Notani
Muons, Inc, Batavia, USA
M.R. Jana, A. Moretti, M. Popovic, A.V. Tollestrup, K. Yonehara
Fermilab, Batavia, USA
D.M. Kaplan
Illinois Institute of Technology, Chicago, Illinois, USA

Funding: Supported in part by DOE STTR grant DE-FG02-08ER86350
Operating a high gradient radio frequency cavity embedded in a strong magnetic field is an essential requirement for muon beam cooling. However, a magnetic field influences the maximum RF gradient due to focusing of dark current in the RF cavity. This problem is suppressed by filling the RF cavity with dense hydrogen gas. As the next step, we plan to explore the beam loading effect in the high pressure cavity by using a 400 MeV kinetic energy proton beam in the MuCool Test Area at Fermilab. We discuss the experimental setup and instrumentation.

TUP092

Multi-purpose 805 MHz Pillbox RF Cavity for Muon Acceleration Studies

1003

G.M. Kazakevich, G. Flanagan, R.P. Johnson, M.L. Neubauer, R. Sah
Muons, Inc, Batavia, USA
K.C.D. Chan, A.J. Jason, S.S. Kurennoy, H.M. Miyadera, P.J. Turchi
LANL, Los Alamos, New Mexico, USA
A. Moretti, M. Popovic, K. Yonehara
Fermilab, Batavia, USA
Y. Torun
IIT, Chicago, Illinois, USA

Funding: Supported by DOE grant DE-FG-08ER86352.
An 805 MHz RF pillbox cavity has been designed and constructed to investigate potential muon beam acceleration and cooling techniques. The cavity can operate in vacuum or under pressure to 100 atmospheres, at room temperature or in an LN2 bath at 77 K. The cavity is designed for easy assembly and disassembly with bolted construction using aluminum seals. The surfaces of the end walls of the cavity can be replaced with different materials such as copper, aluminum, beryllium, or molybdenum, and with different geometries such as shaped windows or grid structures. Different surface treatments such as electro polished, high-pressure water cleaned, and atomic layer deposition are being considered for testing. The cavity has been designed to fit inside the 5-Tesla solenoid in the MuCool Test Area at Fermilab. Performance of the cavity, including initial conditioning and operation in the external magnetic field will be reported.