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| MOPCH166 |
Construction, Tuning and Assembly of the Beta=0.12 SC Ladder Resonator at LNL
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target, simulation, linac, TTF |
451 |
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- G. Bisoffi, E. Bissiato, A. Palmieri
INFN/LNL, Legnaro, Padova
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The Ladder resonator is a 4-gap full Nb cavity suitable for the 0.1< beta <0.2 range of high current proton linacs. A beta=0.12 Nb prototype of this cavity has been built by ZANON (Schio, Italy) on the basis of LNL design. In this paper we describe the construction procedure of such cavity, as well as the tuning steps, aimed at the achievement of the target frequency of 352.2 MHz and the desired field uniformity along the four gaps. Related results of RF simulations and room temperature tests are presented. The preparation of the SC test at LNL is at an advanced stage.
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| TUPCH158 |
High Power, Solid State RF Amplifiers Development for the EURISOL Proton Driver
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controls, simulation, linac, coupling |
1394 |
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- F. Scarpa, A. Facco, D. Zenere
INFN/LNL, Legnaro, Padova
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A 5 kW solid-state RF amplifier for the SPES and EURISOL projects has been built and extensively tested. High reliability and low cost are the main goals for this device, an evolution of a 2.5 kW unit previously developed and presented at EPAC 02. The description of the amplifier, especially designed for superconducting cavities, its characteristics and test results will be illustrated and discussed, as well as the design and construction of two new 10 kW amplifier units that have recently started.
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| TUPLS039 |
Proposal of a Normal Conducting CW-RFQ for the EURISOL Post-accelerator and a Dedicated Beta-beam Linac Concept
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rfq, linac, ion, emittance |
1580 |
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- A. Bechtold, H. Podlech
IAP, Frankfurt-am-Main
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A combination of three superconducting RFQs has been proposed for the EURISOL post accelerator layout. At least the first RFQ of this triplet could be replaced by a normal conducting continuous wave (c.w.) device. Efficient cooling systems have already been designed and applied to existing machines at the IAP in Frankfurt. Preliminary electrode and cavity designs can be presented. Since a parallel use for beta-beam applications was intended, we have optimized the design not only for heavy ion applications with negligible beam currents at c.w. but also for lighter ions with currents up to 7.5 mA at pulsed operation. More recent investigations on beta-beams came up with currents around 50 mA, which then would make a separate linac solution for beta-beams necessary. We worked out some preliminary design suggestions for such a dedicated 100 MeV/u machine.
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| TUPLS129 |
EURISOL 100 kW Target Stations Operation and Implications for its Proton Driver Beam
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target, proton, SNS, ion |
1807 |
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- E. Noah, F. Gerigk, J. Lettry, M. Lindroos, T. Stora
CERN, Geneva
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Targets for the next generation radioactive ion beam (RIB) facilities (RIA, EURISOL) will be subjected to energy deposition levels that call for a specific design of the target and ion source assembly to dissipate the deposited heat and to extract and ionize isotopes of interest efficiently. EURISOL, the next generation European RIB facility, plans to operate four target stations in parallel, three 100 kW direct targets and one 5 MW spallation neutron source with a GeV proton linac driver. The nature of the beam sharing has yet to be defined because in practice it will have a direct impact on target design, operation and lifetime. Splitting the beam in time implies that each target would be subjected to a pulsed beam, whose pulse width and repetition cycle have to be optimized in view of the RIB production. The 100 kW targets are expected to have a goal lifetime of three weeks. Target operation from the moment it is installed on a target station until its exhaustion involves several phases during which the incident proton beam intensity will vary. This paper discusses challenges for high power targetry at EURISOL, with an emphasis on requirements for the proton linac parameters.
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