IBIC2012 - List of Authors (Faus-Golfe, A.)

Paper

Title

Page

Design Study of the Striplines for the Extraction Kicker of the CLIC Damping Rings

1

C. Belver-Aguilar, A. Faus-Golfe
IFIC, Valencia, Spain
M.J. Barnes
CERN, Geneva, Switzerland
F. Toral
CIEMAT, Madrid, Spain

Pre-Damping Rings (PDRs) and Damping Rings (DRs) are needed to reduce the beam emittance and, therefore, to achieve the luminosity requirements for the CLIC main linac. Several stripline kicker systems will be used to inject and extract the beam from the PDRs and DRs. Results of initial studies of the stripline cross-section and the beam coupling impedance, for a non-tapered beam pipe, have previously been reported. In this paper, we present the analysis to study the final choice of the cross-section design, based on impedance matching and field inhomogeneity requirements, the power reflected in the transition between an electrode and the input coaxial feedthrough, and the predicted beam coupling impedance. Mechanical tolerances for the stripline manufacturing process are presently being studied. The striplines are planned to be prototyped by December 2012.

TUPA20

Prototype Development of a Beam Position Monitor for Hadrontherapy Facilities and First Beam Test in the PS

J.J. García-Garrigós, C. Belver-Aguilar, C. Blanch Gutierrez, A. Faus-Golfe
IFIC, Valencia, Spain
M. Haguenauer, P. Poilleux
LLR, Palaiseau, France

Beam Position Monitors (BPM) are crucial to control the beam in Hadrontherapy accelerators, especially in the secondary transport lines towards the patient room where the beam position must be determined with high precision. In this paper we describe the design and construction of a first prototype based on four scintillating fibers coupled to one photodiode each, to detect the light produced by the fibers when intercepting the beam tails. The results of the first beam test using a 6GeV proton beam from the PS accelerator at CERN are also presented. This beam test, jointly with a previous calibration test done with a radioactive source, has been served to evaluate the different design options of the prototype and its read-out electronic setup in order to define the best processing method to get the beam position.

TUPB70

The ATF2 Multi-OTR System: Studies and Design Improvements

1

J. Alabau-Gonzalvo, C. Blanch Gutierrez, A. Faus-Golfe, J.J. García-Garrigós, J. Resta-López
IFIC, Valencia, Spain
J. Cruz, D.J. McCormick, G.R. White, M. Woodley
SLAC, Menlo Park, California, USA

Funding: Funding Agency: FPA2010-21456-C02-01 Work supported in part by Department of Energy Contract DE-AC02-76SF00515.
A multi-Optical Transition Radiation system made of four stations has been installed in the extraction line of ATF2 and has been fully operational since September 2011. The system is being used routinely for beam size and emittance measurements as well as for coupling correction and energy spread measurements. In this paper we present the beam sizes and emittance measurements performed during 2012 runs as well as a detailed study of the experimental single-shot automated coupling correction and the comparison with the simulations. Wakefields problems experimented with the simultaneous measurement has been studied and will be solved by new target holders that will be installed in the next Fall 2012 run.

Paper	Title	Page
MOPA01	Design Study of the Striplines for the Extraction Kicker of the CLIC Damping Rings	1
	C. Belver-Aguilar, A. Faus-Golfe IFIC, Valencia, Spain M.J. Barnes CERN, Geneva, Switzerland F. Toral CIEMAT, Madrid, Spain
	Pre-Damping Rings (PDRs) and Damping Rings (DRs) are needed to reduce the beam emittance and, therefore, to achieve the luminosity requirements for the CLIC main linac. Several stripline kicker systems will be used to inject and extract the beam from the PDRs and DRs. Results of initial studies of the stripline cross-section and the beam coupling impedance, for a non-tapered beam pipe, have previously been reported. In this paper, we present the analysis to study the final choice of the cross-section design, based on impedance matching and field inhomogeneity requirements, the power reflected in the transition between an electrode and the input coaxial feedthrough, and the predicted beam coupling impedance. Mechanical tolerances for the stripline manufacturing process are presently being studied. The striplines are planned to be prototyped by December 2012.

TUPA20	Prototype Development of a Beam Position Monitor for Hadrontherapy Facilities and First Beam Test in the PS
	J.J. García-Garrigós, C. Belver-Aguilar, C. Blanch Gutierrez, A. Faus-Golfe IFIC, Valencia, Spain M. Haguenauer, P. Poilleux LLR, Palaiseau, France
	Beam Position Monitors (BPM) are crucial to control the beam in Hadrontherapy accelerators, especially in the secondary transport lines towards the patient room where the beam position must be determined with high precision. In this paper we describe the design and construction of a first prototype based on four scintillating fibers coupled to one photodiode each, to detect the light produced by the fibers when intercepting the beam tails. The results of the first beam test using a 6GeV proton beam from the PS accelerator at CERN are also presented. This beam test, jointly with a previous calibration test done with a radioactive source, has been served to evaluate the different design options of the prototype and its read-out electronic setup in order to define the best processing method to get the beam position.

TUPB70	The ATF2 Multi-OTR System: Studies and Design Improvements	1
	J. Alabau-Gonzalvo, C. Blanch Gutierrez, A. Faus-Golfe, J.J. García-Garrigós, J. Resta-López IFIC, Valencia, Spain J. Cruz, D.J. McCormick, G.R. White, M. Woodley SLAC, Menlo Park, California, USA
	Funding: Funding Agency: FPA2010-21456-C02-01 Work supported in part by Department of Energy Contract DE-AC02-76SF00515. A multi-Optical Transition Radiation system made of four stations has been installed in the extraction line of ATF2 and has been fully operational since September 2011. The system is being used routinely for beam size and emittance measurements as well as for coupling correction and energy spread measurements. In this paper we present the beam sizes and emittance measurements performed during 2012 runs as well as a detailed study of the experimental single-shot automated coupling correction and the comparison with the simulations. Wakefields problems experimented with the simultaneous measurement has been studied and will be solved by new target holders that will be installed in the next Fall 2012 run.