Abstracts Brochure - CERN

TUPCH111
TUPCH112
TUPCH113
TUPCH114
27-Jun-06 16:00 - 18:00 TUPCH — Poster Session
to increase momentum acceptance by increasing RF accelerating voltage; the previous cavity generated the voltage
of 55kV, whereas the new one can generate 150kV in maximum without changing RF frequency (90.1MHz) and
transmitter (20kW in maximum). The new cavity has been installed in the UVSOR-II in spring of 2005, and high
power commissioning went on smoothly. Because of the improvement, from spring 2005 the UVSOR-II has switched
the daily users run to 27nm-rad.
*M. Katoh et al., in this conference.
RF System for the Superconducting Linac Downstream from DEINOS Injector
The DEINOS injector will be followed by
P. Balleyguier, J.-L. Lemaire (CEA)
an accelerator consisting of a LEP-like cryomodule
including four 4-cell superconducting
cavities. Each of these cavities will be fed by a solid-state amplifier delivering 20 kW in CW operation at 352
MHz. We will use the technology developed by the "Synchrotron SOLEIL" RF team, consisting of merging the power
of numerous independent 330 W modules. The design of the low level RF system will be based on our experience
with the ELSA accelerator.
Commissioning of the 100 MeV Preinjector HELIOS for the SOLEIL Synchrotron
A.S. Setty, D. Jousse, J.-L. Pastre, F. Rodriguez (THALES) R. Chaput,
J.-P. Pollina, B. Pottin, M.-A. Tordeux (SOLEIL) A. Sacharidis
(EuroMev)
192
HELIOS is the 100 MeV electron linac preinjector
of SOLEIL the new French SR facility.
It has been supplied by THALES, as a
turn-key system on the basis of SOLEIL APD
design. The linac was commissioned in Oc-
tober 2005. This paper will remind the main features of the linac, especially on beam-loading compensation, and will
give results obtained during the commissioning tests where a special care has been taken for emittance measurements.
Specified and measured beam parameters will be compared to show the performance of the entire system.
Construction of the ALPHA-X Photo-injector Cavity
J. Rodier, T. Garvey (LAL) D.A. Jaroszynski (USTRAT/SUPA) M.J.
de Loos, S.B. van der Geer (PP)
We will describe the construction and low
power testing of an RF cavity to be used
as a photo-injector for the ALPHA-X project
within the Department of Physics at the Uni-
versity of Strathclyde (UK). The gun is a two and a half cell S-band cavity, employing a metallic photo-cathode.
RF power is coupled to the gun via a co-axial power coupler. The specification of the gun and the low power
measurements made to achieve the correct mode frequency and field flatness will be presented.
A Ridged Circular Waveguide Ferrite Load for Cavity HOM Damping
A normal conducting HOM damped 500
E. Weihreter, V. Duerr, F. Marhauser (BESSY GmbH)
MHz prototype cavity has been tested with
three tapered circular double ridged waveguide
to coaxial transitions as HOM couplers, featuring maximum longitudinal and transverse HOM impedances