Abstracts Brochure - CERN

MOPCH158
MOPCH159
MOPCH160
26-Jun-06 16:00 - 18:00 MOPCH — Poster Session
response of the cavity. Stiffening options to minimize the resonant RF frequency shift due to pressure and the Lorentz
force are explored.
HIPPI Triple-spoke Cavity Design
In the frames of the European project of High
E. Zaplatin, M. Pap, R. Tölle (FZJ)
Intensity Pulsed Proton Injector (HIPPI) the
352 MHz, beta=0.48 triple-spoke cavity is under
development and will be built at the research center FZJ in Juelich. The criteria and results of the cavity RF and
structural analyses are presented.
Coupler Design Considerations for the ILC Crab Cavity
P. Goudket, C.D. Beard (CCLRC/DL/ASTeC) G. Burt (Microwave
Research Group, Lancaster University)
94
Transverse deflecting cavities, such as the
ILC crab cavity, commonly operate in the
TM110 dipole mode. This means that in addition
to the higher order modes (HOMs),
that need to be controlled for every cavity, the fundamental TM010 mode and the other polarisation of the dipole
mode also need to be damped. As the resonant frequency of the fundamental mode is much lower than the cut-off
frequency of the beampipe, this mode becomes trapped in the cavity and difficult to extract using conventional HOM
couplers, hence a dedicated coupler is likely to be required. The ILC crab cavities will require excellent damping of
all undesirable modes in order to maintain maximum luminosity at the IP.
A Beam-based High Resolution RF Phase Adjustment and Test Method for the ILC Crab
Cavity System
A high resolution method of RF phase adjust-
A. Kalinin, L. Ma, R.J. Smith (CCLRC/DL/ASTeC)
ment and test is proposed for the Crab Cavity
system of the ILC. The method is based on
beam as ultimate test instrument. To measure phase imbalance in the pair of crab cavities (