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Title |
Page |
| MOP048 |
Installation of the French High-Intensity Proton Injector at Saclay
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153 |
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- P.-Y. Beauvais, R. Duperrier, R. Gobin
CEA, Gif-sur-Yvette
- P. Ausset
IPN, Orsay
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The installation of the French high intensity injector “IPHI” is in progress on the Saclay site. The proton source, RF power system, cooling plant, diagnostics line as well as shielding are now in place. The first sections of the RFQ cavity are installed on their supports. Commissioning is planned during the first half of 2007. At the beginning of 2008, a beam chopper, developed at Cern, will be inserted between the RFQ and the diagnostics line and tested with a proton beam. At the end of 2008, part of IPHI will be moved from Saclay to Cern. New tests, intended for the LINAC4 project, will be carried out using a negative hydrogen beam. This paper describes the fabrication and assembly operations. The future of IPHI at Cern is evoked.
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| TU3001 |
High-Current Proton Beam Investigations at the SILHI-LEBT at CEA/Saclay
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232 |
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- R. Hollinger, W. Barth, L. A. Dahl, M. Galonska, L. Groening, P. S. Spaedtke
GSI, Darmstadt
- R. Gobin, P.-A. Leroy
CEA, Gif-sur-Yvette
- O. Meusel
IAP, Frankfurt-am-Main
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For the injection of a high current proton beam into the future proton LINAC at GSI for FAIR the ion source and the low energy beam transport system have to deliver a 100 mA proton beam with an energy of 95 keV within an acceptance of 0.3 mm mrad (normalized, rms) at the entrance of the RFQ. Besides the ion source a 2-solenoid focusing system is foreseen as an injection scheme for the subsequent RFQ. The beam parameters of the SILHI ion source and the 2-solenoid LEBT setup generally meet these requirements. Therefore joint emittance measurements on various beam parameters have been performed at the end of the LEBT system. In the frame work of the design study for the future proton LINAC it was a unique possibility to investigate the injection of a high current proton beam into a low energy beam transport system under the influence of space charge. The measurements reveal that a proton current of 100 mA can be achieved at the end of the LEBT while the emittance (95 %, rms, normalized) is as high as 0.3 to 0.5 mm mrad.
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| TUP089 |
Computer Simulations of a High-Current Proton Beam at the SILHI-LEBT
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469 |
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- M. Galonska, M. Galonska
IAP, Frankfurt-am-Main
- R. Gobin
CEA, Gif-sur-Yvette
- R. Hollinger
GSI, Darmstadt
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For the injection of a proton beam into the future proton LINAC for FAIR the ion source and the low energy beam transport system have to deliver a 100 mA proton beam with an energy of 95 keV at the entrance of the RFQ within an acceptance of 0.3 π mm mrad (normalized, rms). A 2-solenoid focusing system is foreseen as an injection scheme. The beam parameters of the SILHI ion source and the 2-solenoid LEBT setup at CEA/Saclay fulfill these requirements. Therefore joint emittance measurements on various beam parameters have been performed at the end of 2005. This article presents the computer simulations of the ion source extraction and LEBT, which supplemented these measurements using the KOBRA3-INP computer code in order to study the influence of space charge effects. These simulations have been performed for various solenoid settings and for different space charge compensation degrees clearly revealing that the ion beam transport within the LEBT is influenced by space charge forces.
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