Abstracts Brochure - CERN

WEPCH033
WEPCH034
WEPCH035
WEPCH036
28-Jun-06 16:00 - 18:00 WEPCH — Poster Session
Single Particle Beam Dynamics Design of BSNS/RCS
Rapid Cycling Synchrotron (RCS) is a key
S. Wang, S.X. Fang, Q. Qin, J. Tang (IHEP Beijing) J. Wei (BNL) component of Beijing Spallation Neutron
Source (BSNS). It accumulates and accelerates
protons to design energy of 1.6 GeV and extracts high energy beam to the target. As a high beam density and
high beam power machine, low beam loss is also a basic requirement. An optimal lattice design is essential for the
cost and the future operation. The lattice design of BSNS is presented, and the related dynamics issues are discussed.
The injection/extraction scheme and the beam collimation system design are introduced.
Studies on Injection Beam Loss at 2.5 GeV PLS Linac and Storage Ring
E.-S. Kim, H. Heo, S.-H. Jeong, S.-C. Kim, S.H. Nam, S.S. Park, J.-H.
Suh (PAL)
282
A low beam loss is an important issue for the
operation of linac and storage ring. Multiparticle
simulations were performed to estimate
the beam losses in the PLS machines that in-
cluded machine errors such as misalignments of focusing and accelerating elements, random errors of RF phases and
magnetic field errors. The beam losses were also measured in several positions in the linac and storage ring during
the beam injection. From these results, we present the loss meachanism during the beam injection at the PLS and the
possible methods to raise the injection efficiency.
Lattice Design of a 6 km Electron Damping Ring for International Linear Collider
Electron damping ring with circumference
E.-S. Kim (PAL)
of 6 km was selected as the ILC baseline configuration.
We present a lattice and discuss
linear and nonlinear dynamical properties in the lattice for an electron damping ring. The characteristics of fast-ion
instabililty in the designed damping ring are also shown.
Design of a Short Two-stage Bunch Compressor for the International Linear Collider
We present a two-stage bunch compressor
E.-S. Kim (PAL)
system that was selected as alternative design
in the ILC BCD (baseline configuration
design). Initial beam with bunch length of 6 mm rms can be compressed to 150 micron rms in the bunch compressor,
but the system uses a single chicane for each stage of compression, rather than the 12 chicanes used in the baseline
design. We present the design scheme and performances of the system in detail, including scheme for emittance
tuning in the system.