Abstracts Brochure - CERN

THPLS071
THPLS072
THPLS073
29-Jun-06 16:00 - 18:00 THPLS — Poster Session
Options and Constraints of Injector for Taiwan Photon Source
G.-H. Luo, H.-P. Chang, P.J. Chou, C.-C. Kuo, K.-K. Lin, H.-J. Tsai,
M.-H. Wang (NSRRC)
468
The storage ring of Taiwan Light Source
(TLS) is now operated at 300 mA top-off
mode with better than 98 % of beam availability.
The original layout of TLS storage
ring has been greatly modified to accommodate one Superconducting (SC) wavelength shifter at the injection section,
one SC wiggler at the SCRF cavity section, and three SC wigglers in achromatic sections in addition to the original four
insertion devices. The TLS can now provide high photon flux to cover a whole spectrum of infrared, vacuum ultra
violet, soft x-ray, and hard x-rays. In view of the future demands, the NSRRC is proposing to construct a new storage
ring of 3.0-3.3 GeV and ultra low emittance, the Taiwan Photon Source (TPS). The TPS storage ring with circumference
of 518.4 m and very low emittance was studied. We will present booster layouts that have been considered for the
TPS. They are based on FODO lattice with missing magnets to match the dispersion at the straight section. Both
sharing tunnel as SLS and separated boosters have been considered. This paper will present draft designs of booster
and criteria for new booster to work with a very low-emittance and top-up injected storage ring.
A Prototype of Auto-tuning Girder System with Cam Mover at NSRRC
T.C. Tseng, J.-R. Chen, H.C. Ho, C.J. Lin, S.Y. Perng, D.-J. Wang, J.
Wang (NSRRC)
A prototype girder system was designed and
fabricated as a preliminary study for the
future 3 GeV TPS (Taiwan Photon Source)
project. This prototype system consists of
three girders to form one twenty-fourth of the whole ring. Each girder was supported with six cam movers on three
pedestals to realize six-axis adjustments. To align the girder precisely, we installed touch sensors between consecutive
girders and laser PSD system between straight section girders in addition with Nivel 20 and HLS devices on each
girder. The system construction and test results will be described in this paper.
Effect of Nonlinear Synchrotron Motion on TPS Energy Acceptance
For design of new generation synchrotron
M.-H. Wang, H.-P. Chang, C.-C. Kuo, G.-H. Luo (NSRRC)
light source the first order momentum compaction
factor is usually small. The contribution
of second order momentum compaction factor can’t be neglected. The longitudinal phase space changes
significantly due to the nonlinear effect. This will affect the energy acceptance of the particles and reduce the Touschek
beam life time. In this paper we analyze the effect of the nonlinear synchrotron motion of TPS lattice design*.
The reduction of energy acceptance is estimated. The contribution to second order momentum compaction factor is
discussed. Efforts to minimize this nonlinear effect will also be addressed.
*C. C. Kuo et al., "Design of Taiwan Future Synchrotron Light Source", these proceedings.