BIW2012 - List of Authors (Mateo, C.M.)

Paper	Title	Page
TUPG021	Design and Test of the LIPAc IPM	180
	J. Egberts, F. Jeanneau, T. Papaevangelou CEA, Gif-sur-Yvette, France P. Abbon, G. Adroit, R. Gobin, J.-F. Gournay, J. Marroncle, C.M. Mateo, J.-Ph. Mols, F. Senée CEA/DSM/IRFU, France
	Funding: Marie Curie Action of the E.U., contract PITN-GA-2008-215080. The linear IFMIF prototype accelerator (LIPAc) will be commissioned in Rokkasho, Japan, shortly. Due to its high beam power of over 1 MW and its tremendous continuous wave beam current of 125 mA, non-interceptive profilers are required. We present the design and test of the LIPAc ionization profile monitor. Due to the very high space charge, LIPAc is designed in a very compact manner which hardly leaves any room for diagnostics. The IPM was designed using FEM simulations to achieve the optimal electric field keeping the tight space requirements of LIPAc. Due to the limited space available, we had to abstain from using a magnetic guidance field and collect ions instead of electrons. To cope with the strong space charge forces of the beam, we have developed a software algorithm that aims to not only scale the distorted measured profile to its original size, but to fully reconstruct the original beam profile. This algorithm has been tested at SILHI, a high intensity ion source at CEA Saclay, France, where highest space charge forces can be achieved, and the results will be presented as well.

TUPG020	Non-Intercepting Tomographic Reconstruction of the Transverse Spatial Distribution of SILHI Ion Source Beam	177
	C.M. Mateo CEA/IRFU, Gif-sur-Yvette, France G. Adroit, J. Egberts, R. Gobin, Y. Sauce, F. Senée, O. Tuske CEA/DSM/IRFU, France
	Funding: This work is supported by the DITANET Marie Curie European network. Particle accelerators with high intensity beams require non-interceptive diagnostics because any interceptive tools can be damaged or can perturb the beam during measurements. At CEA Saclay, tomography is incorporated with non-destructive and non-interceptive beam-induced fluorescence profiler, to produce a 2D reconstruction of the transverse spatial distribution of the beam from the Source dIons Légers de Haute Intensité (SILHI). Six cameras, positioned at six different directions around the beam, were aligned with respect to the beam axis and were installed to obtain the image of the emitted light due to the beam-residual gas interaction. At present, due to software limitations, profile measurements from each camera cannot be done simultaneously. Instead, there is a one-second interval on measurements from one camera to another. This makes a total of about ten seconds to obtain the profiles and to reconstruct the 2D spatial beam distribution.

Paper

Title

Page

Design and Test of the LIPAc IPM

180

J. Egberts, F. Jeanneau, T. Papaevangelou
CEA, Gif-sur-Yvette, France
P. Abbon, G. Adroit, R. Gobin, J.-F. Gournay, J. Marroncle, C.M. Mateo, J.-Ph. Mols, F. Senée
CEA/DSM/IRFU, France

Funding: Marie Curie Action of the E.U., contract PITN-GA-2008-215080.
The linear IFMIF prototype accelerator (LIPAc) will be commissioned in Rokkasho, Japan, shortly. Due to its high beam power of over 1 MW and its tremendous continuous wave beam current of 125 mA, non-interceptive profilers are required. We present the design and test of the LIPAc ionization profile monitor. Due to the very high space charge, LIPAc is designed in a very compact manner which hardly leaves any room for diagnostics. The IPM was designed using FEM simulations to achieve the optimal electric field keeping the tight space requirements of LIPAc. Due to the limited space available, we had to abstain from using a magnetic guidance field and collect ions instead of electrons. To cope with the strong space charge forces of the beam, we have developed a software algorithm that aims to not only scale the distorted measured profile to its original size, but to fully reconstruct the original beam profile. This algorithm has been tested at SILHI, a high intensity ion source at CEA Saclay, France, where highest space charge forces can be achieved, and the results will be presented as well.

TUPG020

Non-Intercepting Tomographic Reconstruction of the Transverse Spatial Distribution of SILHI Ion Source Beam

177

C.M. Mateo
CEA/IRFU, Gif-sur-Yvette, France
G. Adroit, J. Egberts, R. Gobin, Y. Sauce, F. Senée, O. Tuske
CEA/DSM/IRFU, France

Funding: This work is supported by the DITANET Marie Curie European network.
Particle accelerators with high intensity beams require non-interceptive diagnostics because any interceptive tools can be damaged or can perturb the beam during measurements. At CEA Saclay, tomography is incorporated with non-destructive and non-interceptive beam-induced fluorescence profiler, to produce a 2D reconstruction of the transverse spatial distribution of the beam from the Source dIons Légers de Haute Intensité (SILHI). Six cameras, positioned at six different directions around the beam, were aligned with respect to the beam axis and were installed to obtain the image of the emitted light due to the beam-residual gas interaction. At present, due to software limitations, profile measurements from each camera cannot be done simultaneously. Instead, there is a one-second interval on measurements from one camera to another. This makes a total of about ten seconds to obtain the profiles and to reconstruct the 2D spatial beam distribution.