Paper |
Title |
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TUPWA007 |
Method and Results of Systematic Beam Matching to a Periodic DTL |
1733 |
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- L. Groening, W.A. Barth, P. Forck, I. Hofmann, S.G. Yaramyshev
GSI, Darmstadt, Germany
- D. Jeon
IBS, Daejeon, Republic of Korea
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Systematic investigations on high current 3d-beam matching to a periodic Alvarez-type DTL are reported. Twiss parameters at the entrance of a matching section to the periodic structure were concluded from transverse and longitudinal measurements. Periodic solutions in 3d were calculated including space charge using the measured rms emittances. The matching was performed by rms beam size tracking and employing a numerical routine to set the matching section, which comprises five quadrupoles and two bunchers. Matching allowed for significant emittance growth reduction and for verification of non-linear beam dynamics effects along the DTL.
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TUPWA019 |
Comparison of Tracking Simulation with Experiment on the GSI UNILAC |
1763 |
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- X. Yin
IHEP, Beijing, People's Republic of China
- W.A. Barth, W.B. Bayer, L. Groening, I. Hofmann, S.G. Richter, S.G. Yaramyshev
GSI, Darmstadt, Germany
- A. Franchi
CERN, Geneva, Switzerland
- A.C. Sauer
IAP, Frankfurt am Main, Germany
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In the European framework “High Intensity Pulsed Proton Injector” (HIPPI), the 3D linac code comparison and benchmarking program with experiment have been initialed. PARMILA and HALODYN are involved in this work. Both of these codes have been developed and used for linac design and beam dynamics studies. In this paper, we compare the simulation results with experiment results which was carried out on the UNILAC Alvarez DTL. And discuss physics aspects of the different linac design and beam dynamics simulation codes.
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THPWO009 |
Beam Dynamics Error and Loss Investigation of the FAIR Proton Injector |
3776 |
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- G. Clemente, W.A. Barth, P. Forck, L. Groening, R. Hollinger, M. Kaiser, J. Pfister, W. Vinzenz, S.G. Yaramyshev, C. Zhang
GSI, Darmstadt, Germany
- R. M. Brodhage, B. Koubek, H. Podlech, U. Ratzinger, A. Schempp, R. Tiede
IAP, Frankfurt am Main, Germany
- N. Chauvin, C.S. Simon, O. Tuske
CEA/DSM/IRFU, France
- O. Delferrière
CEA/IRFU, Gif-sur-Yvette, France
- B. Launé, J. Lesrel
IPN, Orsay, France
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The FAIR Proton Linac is a 70mA, 70 MeV. 325 MHz linear accelerator based on CH cavities. The focusing scheme is provided by an asynchronous KONUS lattice period. Random misalignment and rotation errors of the quadrupoles, together with phase and RF settings of the power source plays a major role in beam losses. Those effects are investigated and the beam dynamics results, including several source of errors, are presented and discussed.
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