| Paper | Title | Page |
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| TH1A03 | Development of New Heavy Ion Linacs at GSI | 688 |
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| The heavy ion linac UNILAC at GSI will be upgraded in order to meet the beam requirements imposed by the upcoming FAIR facility. This upgrade includes several innovative techniques and applications. They comprise a new gaseaous stripper with enhanced efficiency, full 4d transverse emittance measurements, a round-to-flat beam adaptor, asymmetric transverse focusing along the new Alvarez DTL, optimized shape of the drift tube surface w.r.t. shunt impedance per surface field, and a field stabilization and tuning scheme without post-couplers. Additionally, we report on development of a super-conducting cw linac for intermediate mass ions which will be dedicated to production of super heavy elements close to the Coulomb barrier. | ||
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Slides TH1A03 [3.016 MB] | |
| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-TH1A03 | |
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| TH2A03 | Complete Transverse 4D Beam Characterization for Ions Beams at Energies of Few MeV/u | 720 |
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| Measurement of the ion beam rms-emittances is done through determination of the second order beam moments. For time being the moments quantifying the amount of inter-plane coupling, as <xy'> for instance, have been accessible to measurements just for very special cases of ions at energies below 200 keV/u using pepperpots. This talk presents successful measurements of all inter-plane coupling moments at 1 to 11 MeV/u. From first principles the used methods are applicable at all ion energies. The first campaign applied skewed quadrupoles in combination with a regular slit/grid emittance measurement device. The second campaign used a rotatable slit/grid device in combination with regular quadrupoles. | ||
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Slides TH2A03 [17.343 MB] | |
| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-TH2A03 | |
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| THPLR033 | R&D Status of the New Superconducting CW Heavy Ion LINAC@GSI | 923 |
| SPWR024 | use link to see paper's listing under its alternate paper code | |
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For future research in the field of Super Heavy Elements (SHE) a superconducting (sc) continuous wave (cw) ion LINAC with high intensity is highly desirable. Presently a multi-stage R&D program conducted by GSI, HIM and IAP[*] is in progress. The fundamental linac design composes a high performance ion source, a new low energy beam transport line, the High Charge State Injector (HLI) upgraded for cw, and a matching line (1.4 MeV/u) followed by the new sc-DTL LINAC for acceleration up to 7.3 MeV/u. The successful commissioning of the first Crossbar-H-mode (CH) cavity (Demonstrator), in a vertical cryo module, was a major milestone in 2015[**]. The next stage of the new sc cw heavy ion LINAC is the advanced demonstrator comprising a string of cavities and focusing elements build from several short constant-beta sc CH-cavities operated at 217MHz. Currently the first two sc 8 gap CH-cavities are under construction at Research Instruments (RI), Bergisch Gladbach, Germany. The new design without girders and with stiffening brackets at the front and end cap potentially reduces the overall technical risks during the construction phase and the pressure sensitivity of the cavity. The recent status of the construction phase as well as an outlook for further cavity development of the new cw heavy ion LINAC will be presented.
*W.Barth et al.,Further R&D for a new Superconducting cw Heavy Ion LINAC@GSI, IPAC14, THPME004 **F.Dziuba et al.,First Performance Test on the Superconducting 217 MHz CH Cavity at 4K,LINAC16, THPLR033 |
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Poster THPLR033 [2.502 MB] | |
| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-THPLR033 | |
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