PAC2013 - List of Authors (Pasquinelli, R.J.)

Paper	Title	Page
WEPHO15	Modeling of Magnetron Transmitter for the Project X CW 1 GEV Linac	966
	G.M. Kazakevich, R.P. Johnson Muons, Inc, Illinois, USA B. Chase, R.J. Pasquinelli, V.P. Yakovlev Fermilab, Batavia, USA
	A 650 MHz 50 kW transmitter with a wide-band control in phase and power, based on injection-locked CW magnetrons, intended to drive individually Superconducting RF (SRF) cavities has been proposed for the Project X CW 1 GeV linac. Utilization of the magnetron RF sources for the intensity-frontier project will save a significant capital cost in comparison with traditional RF sources based on klystrons, Inductive Output Tubes (IOTs), solid-state amplifiers. The transmitter setup has been modelled experimentally and by simulation using 2.45 GHz CW magnetrons with output power up to 1 kW. The measurements and simulations performed with the injection-locked magnetrons demonstrated capability of the proposed transmitter concept to power individually the superconducting cavities suppressing parasitic modulation of the accelerating field caused by mechanical oscillation (microphonics and oscillations resulted from Lorentz-force), beam loading, dynamic tuning errors, and other low-frequency disturbances of the magnetron performance. Results of the experimental and theoretical modelling are analysed and discussed in this paper.

WEPMA03	Tuner System Assembly and Tests for the 201-MHz MICE Cavity	987
	L. Somaschini INFN-Pisa, Pisa, Italy A.J. DeMello, D. Li, S.P. Virostek LBNL, Berkeley, California, USA P.M. Hanlet IIT, Chicago, Illinois, USA A. Moretti, R.J. Pasquinelli, D.W. Peterson, Y. Torun Fermilab, Batavia, USA
	Funding: Supported by the US Department of Energy. The MICE cavities include a mechanical tuning system consisting of stainless steel flexure forks attached to the cavity body and driven by pneumatic actuators. The first of these systems was assembled and tested at Fermilab for use at the MuCool Test Area. The actuators were calibrated on a test hoop. The cavity body was measured and the fork contact pads machined to fit. Actuators were mounted on the vacuum vessel housing the cavity. The transfer function of the tuning system was measured and frequency control software implemented.

WEPMA16	Assembly and Testing of the First 201-MHz MICE Cavity at Fermilab	1016
	Y. Torun Illinois Institute of Technology, Chicago, IL, USA D.L. Bowring, A.J. DeMello, D. Li, T.H. Luo, S.P. Virostek LBNL, Berkeley, California, USA P.M. Hanlet IIT, Chicago, Illinois, USA M.A. Leonova, A. Moretti, R.J. Pasquinelli, D.W. Peterson, R.P. Schultz, J.T. Volk Fermilab, Batavia, USA T.H. Luo UMiss, University, Mississippi, USA L. Somaschini INFN-Pisa, Pisa, Italy
	Funding: Supported by the US Department of Energy. The International Muon Ionization Cooling Experiment (MICE) includes two linear accelerator sections with four RF cavities each within a shared vacuum vessel. Ten cavity bodies have been fabricated for MICE including two spares and one was electropolished. A special vacuum vessel was built to house this cavity and form the 201-MHz Single-Cavity Module. The module was assembled, instrumented and tested at Fermilab for installation and operation in the MuCool Test Area.

Paper

Title

Page

Modeling of Magnetron Transmitter for the Project X CW 1 GEV Linac

966

G.M. Kazakevich, R.P. Johnson
Muons, Inc, Illinois, USA
B. Chase, R.J. Pasquinelli, V.P. Yakovlev
Fermilab, Batavia, USA

A 650 MHz 50 kW transmitter with a wide-band control in phase and power, based on injection-locked CW magnetrons, intended to drive individually Superconducting RF (SRF) cavities has been proposed for the Project X CW 1 GeV linac. Utilization of the magnetron RF sources for the intensity-frontier project will save a significant capital cost in comparison with traditional RF sources based on klystrons, Inductive Output Tubes (IOTs), solid-state amplifiers. The transmitter setup has been modelled experimentally and by simulation using 2.45 GHz CW magnetrons with output power up to 1 kW. The measurements and simulations performed with the injection-locked magnetrons demonstrated capability of the proposed transmitter concept to power individually the superconducting cavities suppressing parasitic modulation of the accelerating field caused by mechanical oscillation (microphonics and oscillations resulted from Lorentz-force), beam loading, dynamic tuning errors, and other low-frequency disturbances of the magnetron performance. Results of the experimental and theoretical modelling are analysed and discussed in this paper.

WEPMA03

Tuner System Assembly and Tests for the 201-MHz MICE Cavity

987

L. Somaschini
INFN-Pisa, Pisa, Italy
A.J. DeMello, D. Li, S.P. Virostek
LBNL, Berkeley, California, USA
P.M. Hanlet
IIT, Chicago, Illinois, USA
A. Moretti, R.J. Pasquinelli, D.W. Peterson, Y. Torun
Fermilab, Batavia, USA

Funding: Supported by the US Department of Energy.
The MICE cavities include a mechanical tuning system consisting of stainless steel flexure forks attached to the cavity body and driven by pneumatic actuators. The first of these systems was assembled and tested at Fermilab for use at the MuCool Test Area. The actuators were calibrated on a test hoop. The cavity body was measured and the fork contact pads machined to fit. Actuators were mounted on the vacuum vessel housing the cavity. The transfer function of the tuning system was measured and frequency control software implemented.

WEPMA16

Assembly and Testing of the First 201-MHz MICE Cavity at Fermilab

1016

Y. Torun
Illinois Institute of Technology, Chicago, IL, USA
D.L. Bowring, A.J. DeMello, D. Li, T.H. Luo, S.P. Virostek
LBNL, Berkeley, California, USA
P.M. Hanlet
IIT, Chicago, Illinois, USA
M.A. Leonova, A. Moretti, R.J. Pasquinelli, D.W. Peterson, R.P. Schultz, J.T. Volk
Fermilab, Batavia, USA
T.H. Luo
UMiss, University, Mississippi, USA
L. Somaschini
INFN-Pisa, Pisa, Italy

Funding: Supported by the US Department of Energy.
The International Muon Ionization Cooling Experiment (MICE) includes two linear accelerator sections with four RF cavities each within a shared vacuum vessel. Ten cavity bodies have been fabricated for MICE including two spares and one was electropolished. A special vacuum vessel was built to house this cavity and form the 201-MHz Single-Cavity Module. The module was assembled, instrumented and tested at Fermilab for installation and operation in the MuCool Test Area.