LINAC08 - List of Authors (Gobin, R.)

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Gobin, R.

Paper	Title	Page
MOP072	Beam Dynamics Simulation of the Low Energy Beam Transport Line for IFMIF/EVEDA	242
	N. Chauvin, O. Delferrière, R.D. Duperrier, R. Gobin, P.A.P. Nghiem, D. Uriot CEA, Gif-sur-Yvette
	The purpose of the IFMIF-EVEDA (International Fusion Materials Irradiation Facility-Engineering Validation and Engineering Design Activities) demonstrator is to accelerate a 125 mA cw deuteron beam up to 9 MeV. Therefore, the project requires that the ion source and the low energy beam transport (LEBT) line deliver a 140 mA cw deuteron beam with an energy of 100 keV and an emittance of 0.25 π .mm.mrad (rms normalized) at the entrance of the RFQ. The deuteron beam is extracted from a 2.45 GHz ECR source based on the SILHI design. A LEBT with a two solenoids focusing system is foreseen to transport and adapt the beam for the RFQ injection. In order to validate the LEBT design, intensive beam dynamics simulations have been carried out using a parallel implementation of a particle-in-cell 3D code which takes into account the space charge compensation of the beam induced by the ionisation of the residual gas. The simulations results (in particular from the emittance growth point of view) performed under several conditions of gas species or gas pressure in the beam line are presented. R. Gobin et al, Rev. Sci. Instrum. 79, 02B303 (2008).

Paper

Title

Page

MOP072

Beam Dynamics Simulation of the Low Energy Beam Transport Line for IFMIF/EVEDA

242

N. Chauvin, O. Delferrière, R.D. Duperrier, R. Gobin, P.A.P. Nghiem, D. Uriot
CEA, Gif-sur-Yvette

The purpose of the IFMIF-EVEDA (International Fusion Materials Irradiation Facility-Engineering Validation and Engineering Design Activities) demonstrator is to accelerate a 125 mA cw deuteron beam up to 9 MeV. Therefore, the project requires that the ion source and the low energy beam transport (LEBT) line deliver a 140 mA cw deuteron beam with an energy of 100 keV and an emittance of 0.25 π .mm.mrad (rms normalized) at the entrance of the RFQ. The deuteron beam is extracted from a 2.45 GHz ECR source based on the SILHI design*. A LEBT with a two solenoids focusing system is foreseen to transport and adapt the beam for the RFQ injection. In order to validate the LEBT design, intensive beam dynamics simulations have been carried out using a parallel implementation of a particle-in-cell 3D code which takes into account the space charge compensation of the beam induced by the ionisation of the residual gas. The simulations results (in particular from the emittance growth point of view) performed under several conditions of gas species or gas pressure in the beam line are presented.

*R. Gobin et al, Rev. Sci. Instrum. 79, 02B303 (2008).