| Paper |
Title |
Page |
| MOPP111 |
Beam Tests with the MAFF IH-RFQ at the IAP-Frankfurt
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817 |
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- H. Z. Zimmermann, D. Habs
LMU, München
- A. Bechtold, P. Kolb, A. Schempp
IAP, Frankfurt am Main
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The IH-type RFQ for the MAFF project at the LMU Munich is integrated into a test bench at the IAP in Frankfurt. The existing IH-RFQ set-up is the second after the HIS at GSI and the first one that can be directly compared to a very similar 4-rod type machine, the REX-ISOLDE RFQ at CERN. The test bench consists of an ionsource, an electrostatic quadrupole lens system with implemented steerers, and several beam diagnostic like a two dimensional emittance scanner, bending magnet and a fast faraday cup. Experimental results will be presented. These tests accompanied with theoretical investigations will be done with special respect to the applicability of such normal conducting RFQ accelerators to the EURISOL post accelerator.
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| TUPP099 |
Improvement of RFQSIM
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1762 |
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- J. M. Maus, A. Schempp
IAP, Frankfurt am Main
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RFQSIM has constantly been developed at IAP to simulate multiple particles dynamic of RFQs which include simulations of high current applications, decelerators, debuncher and rebuncher e.g. for the medical application. The latest work to improve RFQSIM include the option to change the modulation and or the aperatur of the simulated RFQ to produce the same acceleration and or focusing efficiency than the two term potential gives for different electrode geometries. Additional work was done to improve the graphical analysis during runtime as well as the change of all routines to be compatible with the Fortran F95 standard. The maximum number of particles to be simulated was increased to 200k. The paper shows examples of results for the high current application like the of the p-linac and the new HLI injector for GSI and for transition sections.
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| THPP021 |
Status of the Unilac-upgrade Programme for the Heavy Element Research at GSI-Ship
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3416 |
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- P. Gerhard, W. Barth, L. A. Dahl, K. Tinschert
GSI, Darmstadt
- A. Schempp
IAP, Frankfurt am Main
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For more than 30 years the heavy-element research using the velocity separator SHIP is one of the major experiments at GSIs heavy ion linear accelerator UNILAC. On of the major contributions which led to the discovery of six new elements since 1981 is the perpetual effort to increase the beam intensity. Since the early 1990's the beam current available was raised significantly by a number of improvements concerning the source, the LEBT and the accelerator. The next steps are scheduled for 2009 and include an upgrade of the Radio Frequency Quadrupole-accelerator (RFQ) and a new superconducting 28 GHz-ECR ion source. The new RFQ will allow higher duty factors up to 100% and improve the longitudinal beam quality as well as the beam transmission. The new ion source will provide an increase in beam intensity and simultaneously higher charge states. The new source will be installed in addition to the existing one, therefore a second LEBT-system has to be designed and integrated into the High Charge State Injector. This paper presents the status quo of both the RFQ and the ion source upgrade and will provide technical data.
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| THPP037 |
A Decelerator for Heavy Highly Charge Ions at HITRAP
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3449 |
| |
- J. Pfister, B. Hofmann, U. Ratzinger, A. Schempp
IAP, Frankfurt am Main
- W. Barth, L. A. Dahl, P. Gerhard, O. K. Kester, W. Quint, T. Stoehlker
GSI, Darmstadt
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The heavy highly charged ion trap (HITRAP) project at GSI is in the commissioning phase. Highly charged ions up to U92+ provided by the GSI accelerator facility will be decelerated and subsequently injected into a large Penning trap for further cooling almost to rest. A combination of an IH- and an RFQ-structure decelerates the ions from 4 MeV/u down to 6 keV/u. In front of the decelerator a double drift-buncher-system provides for phase focusing and a final de-buncher integrated in the RFQ-tank reduces the energy spread in order to improve the efficiency for beam capture in the cooler trap. This contribution concentrates on the beam dynamics simulations and corresponding measurements in the first commissioning beam times.
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| THPP098 |
Simulations on a Beam Transport System for the Frankfurt Funneling Experiment
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3593 |
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- P. Kolb, N. Mueller, A. Schempp
IAP, Frankfurt am Main
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The goal of the Frankfurt Funneling Experiment is to multiply beam currents by mergeing two low energy ion beams. Our setup consists of two ion sources, a two beam RFQ accelerator, a multigap deflector and a beam diagnostics. Current work is the design of a new beam transport between RFQ accelerator and deflector and first simulations will be presented.
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| THPP100 |
Development of New Ion Sources for the Frankfurt Funneling Experiment
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3596 |
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- N. Mueller, U. Bartz, P. Kolb, A. Schempp
IAP, Frankfurt am Main
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Funneling is a method to increase beam currents in several stages. The Frankfurt Funneling Experiment is a prototype of such a stage. The experimental setup consists of two ion sources with electrostatic lens systems, a Two-Beam RFQ accelerator, a funneling deflector and a beam diagnostic system. The two beams are bunched and accelerated in a Two-Beam RFQ and the last parts of the RFQ electrodes achieve a 3d focus at the crossing point of the two beam axis. A funneling deflector combines the bunches to a common beam axis. The newly optimized ion sources are adapted to the front end bunching section. First results and measurements will be presented.
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