Abstracts Brochure - CERN

TUPLS037
TUPLS038
TUPLS039
27-Jun-06 16:00 - 18:00 TUPLS — Poster Session
The Frankfurt Funneling Experiment
U. Bartz, D. Ficek, N. Mueller, A. Schempp, J. Thibus, M. Vossberg
(IAP)
230
The goal of the Frankfurt Funneling Experiment
is to multiply beam currents of RFQ accelerators
at low energies to avoid problems
with space charge. The two beams from the
ion sources are injected into two RFQ channels. The last part of the RFQ electrodes have been replaced to achieve a
3d focus at the crossing point of the two beam axis where the funneling deflector as a central peace of the experiment
is located. The newly designed multi-cell deflector is adapted to the optimised funneling section. It is mechanically
solid, easy to tune in and ready for operation. First measurements will be presented.
The MAFF IH-RFQ Test Stand at the IAP Frankfurt
A. Bechtold, J. Fischbach, U. Ratzinger, J. Rehberg, M. Reichwein, A.
Schempp (IAP) D. Habs (LMU) J. Haeuser (NTG Neue Technologien
GmbH & Co KG) O.K. Kester (GSI)
The IH-type RFQ for the MAFF project at the
LMU in Munich is presently under construction
and will be integrated into a beam test
stand at the IAP in Frankfurt. It is the second
RFQ following the IH resonator concept and
the first one that can be directly compared to a very similar 4-rod type machine, namely the REX-ISOLDE RFQ at
CERN. The MAFF RFQ has been designed to accelerate rare isotope beams (RIBs) with mass to charge ratios up to
6.3 from 3 keV/u to 300 keV/u at an operating frequency of 101.28 MHz with an electrode voltage of 60 kV. First RFmeasurements
have already been executed and can be compared to appropriate simulation results. Parts of the test
stand are currently under construction, such as the volume ion source for He + at an extraction voltage of 12 keV and
an electrostatic quadruplet for injection with an integrated steering system. These tests and accompanying theoretical
investigations will be done with special respect to the applicability of such normal conducting RFQ accelerators to
the EURISOL post accelerator.
Proposal of a Normal Conducting CW-RFQ for the EURISOL Post-accelerator and a Dedicated
Beta-beam Linac Concept
A combination of three superconducting
A. Bechtold, H. Podlech (IAP)
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.