| Paper |
Title |
Page |
| TUPCH115 |
Status of the 70 MeV, 70 mA CH Proton-DTL for FAIR
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1283 |
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- G. Clemente, H. Podlech, U. Ratzinger, R. Tiede
IAP, Frankfurt-am-Main
- L. Groening
GSI, Darmstadt
- S. Minaev
ITEP, Moscow
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The CH-type cavity shows promising features in the low and medium beta range: its high accelerator gradient and the high level of shunt impedance together with the compact transverse dimensions make this new cavity a good candidate for proton acceleration up to 100 MeV. That's why GSI has decided to base the new high current proton injector for the new FAIR facility on that structure: the operating frequency will be 352 MHz with an injection energy of 3 MeV. In order to improve the technical experience on this new kind of structure, IAP has built a model consisting of 8 equidistant gaps for a total cavity-length of 60 cm. Several design options with respect to welding, alignement, cooling and RF joints were studied and compared each other. A new concept for the end-cells geometry will result in the desired flatness of the electric field along the cavity axis and, at the same time, allow effective integration of internal quadruple lenses. Finally, the electric quadruple content of CH-structure gaps is listed in dependence on the geometry of the cell.
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| TUPLS036 |
Status of the Linac-commissioning for the Heavy Ion Cancer Therapy Facility HIT
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1571 |
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- M.T. Maier, R. Baer, W. Barth, L.A. Dahl, C. Dorn, T.G. Fleck, L. Groening, C.M. Kleffner, C. Müller, A. Peters, B. Schlitt, M. Schwickert, K. Tinschert, H. Vormann
GSI, Darmstadt
- R. Cee, B. Naas, S. Scheloske, T. Winkelmann
HIT, Heidelberg
- U. Ratzinger, A. Schempp
IAP, Frankfurt-am-Main
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A clinical facility for cancer therapy using energetic proton and ion beams (C, He and O) is under construction and will be installed at the Radiologische Universitätsklinik in Heidelberg, Germany. It consists of two ECR ion sources, a 7 MeV/u linac injector and a 6.5 Tm synchrotron to accelerate the ions to final energies of 50-430 MeV/u. The linac comprises a 400 keV/u RFQ and a 7 MeV/u IH-DTL operating at 216.8 MHz. In this contribution the current status of the linear accelerator is reported. After first tests with 1H+ beam of the RFQ at GSI, the commissioning of the accelerator in Heidelberg has already started. The commissioning with beam is performed in three steps for the LEBT, the RFQ and the IH-DTL. For this purpose a versatile beam diagnostic test bench has been designed. It consists of a slit-grid emittance measurement device, transverse pick-ups providing for time of flight energy measurements, SEM-profile grids and different devices for beam current measurements. This paper will provide for a status report of the linac-commissioning.
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