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Abstracts Brochure - CERN

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MOPLS089<br />

MOPLS090<br />

MOPLS091<br />

26-Jun-06 16:00 - 18:00 MOPLS — Poster Session<br />

of 6MHz are under investigation. Such a kicker system should minimize the perturbation of the incoming bunch<br />

with a finite bunch length, while it kicks the outgoing bunch by more than 1 millirad. Various arrangements of such<br />

kickers along the beamlines are discussed.<br />

Optimization of ILC Damping Rings’ Lattice<br />

Several damping ring designs for the Interna-<br />

Y. Sun (PKU/IHIP)<br />

tional Linear Collider (ILC) have been proposed.<br />

Among them, two 6 km positron<br />

rings and one 6 km electron ring are proposed as baseline. At the same time, 17 km dogbone ring is selected as<br />

an alternative since it is harder to achieve the required acceptance. To achieve a good acceptance and reasonable<br />

extracted emittance, we optimize the lattice of the 17 km dogbone ring and the 6 km circular ring. In this paper,<br />

we report beam dynamics characterizations and optimizations for the 6 and 17 km damping rings. We used the<br />

accelerator code MAD for matching and tracking.<br />

Design of a Strip-line Extraction Kicker for CTF3 Combiner Ring<br />

I. Rodriguez, F. Toral (CIEMAT) D. Alesini, F. Marcellini, M. Zobov<br />

(INFN/LNF) L. García-Tabarés (CEDEX)<br />

134<br />

The new CLIC test facility (CTF3) is the latest<br />

stage to prove the technical feasibility of the<br />

CLIC project. An extraction kicker is necessary<br />

for the combiner ring, and it will be a<br />

strip-line type device due to lower coupling impedances and straightforward fabrication. The field uniformity together<br />

with a correct beam dynamics are the most challenging issues of this design. The main parameters of the<br />

kicker are analytically calculated using standard analytic formulae. The numeric modelling and simulation of several<br />

possible straight sections are reported. The field homogeneity and the kick angle are calculated in a 3D finite element<br />

model, and the characteristic impedance is matched with the 50 Ohm load. Several manufacturing issues for the first<br />

prototype are also outlined.<br />

First Design of a Post Collision Beam Line for CLIC at 3 TeV<br />

V.G. Ziemann, T. J. C. Ekelof, A. Ferrari (UU/ISV) P. Eliasson<br />

(<strong>CERN</strong>)<br />

As part of the Post collision diagnostic task<br />

of the ILPS work-package of EuroTeV we discuss<br />

a design of the beam line between the interaction<br />

point and the beam dump for CLIC<br />

with a center-of-mass energy of 3 TeV. The design is driven by the requirement to transport the beam and all secondaries<br />

such as beamstrahlung and coherent pairs to the beam dump with minimal losses. Moreover, we discuss the<br />

integration of novel diagnostic methods into the post collision beam line based on the detection of coherent pairs and<br />

monitoring the beam profile of the primary beam.

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