Chen, J.-R.

Paper	Title	Page
TUPMA034	Operation Experience of Top-up injection at Taiwan Light Source	151
	G.-H. Luo, H.-P. Chang, C.-T. Chen, J. Chen, J.-R. Chen, C.-C. Kuo, K. S. Liang, Y.-C. Liu, R. J. Sheu, D.-J. Wang NSRRC, Hsinchu
	The storage ring of Taiwan Light Source (TLS) has one Superconducting (SC) cavity, one SC wavelength shifter, and two SC wigglers installed during last two years. The operation mode was also upgraded to have the capability of top-up injection. Top-up is an operation mode in which the beam current is maintained above certain level by frequent injections in the storage ring. The current stability maintains in the range of 10-3 for long period of operation. It provides constant thermal loading on all components in the storage ring and the optics components of beamlines, as well as constant signal to the beam position monitor. The top-up injection is a routine operation mode during user shifts at TLS. Statistics, operation experience and future expansion will be discussed in this paper.
THZMA04	Status and Future of Taiwan Light Source	602
	K. S. Liang, J.-R. Chen, C.-C. Kuo, G.-H. Luo, D.-J. Wang NSRRC, Hsinchu
	The Taiwan Light Source of National Synchrotron Radiation Research Center (NSRRC) has reached a very stable operation condition and productive scientific outputs. The copper Doris RF cavities were replaced with a niobium Superconducting (SC) RF cavity in order to eliminate higher-order-modes and deliver higher beam current. Superconducting wigglers were installed to provide higher flux at higher photon energy. The storage ring is now operated at 300 mA top-up mode with better than 97 % of beam availability during users shifts. The original layout of the magnets has been greatly modified to accommodate one SC wavelength shifter at the injection section, one SC wiggler at the RF cavity section, and three SC wigglers in achromatic sections in addition to the original design of one wiggler and three undulators. In view of the future scientific demands, the NSRRC is proposing to construct a new synchrotron storage ring of 3.0~3.3 GeV and ultra low emittance, the Taiwan Photon Source (TPS). The TPS will provide brilliant X-rays at 1021 photons/s/0.1%BW /mm2/mr2 by SC undulator upon its completion, making it the brightest synchrotron light with the finest performance in the world.
	Slides
THPMA093	Vibration Evaluation for Utility Instruments and Water Piping System in TLS	776
	Y.-H. Liu, J.-C. Chang, J.-R. Chen, D.-J. Wang NSRRC, Hsinchu
	In order to design the brightness new synchrotron light source-TPS in NSRRC. The vibration issue is more restrict nowadays. The position stability in subsystems is important to beam dynamic performance. The vibration source from utility systems is one source of the instability factor. The purpose of this paper is to estimate the vibration source from water systems, AHU systems and the piping system in utility group. Analysis the vibration path from ground and the piping system is the first step. Then, propose the feasible proposals to eliminate the vibration source and reduce the vibration propagation path. The construction standards for water systems and AHU systems will be established before design. The test is based on TLS operating systems. Besides, the distance and path between utility building and storage ring is another factor for vibration propagation. To eliminate the vibration source and propagation path in TLS will be the next step. The experimental results will be the foundation of TPS construction in the future.
WEPMA077	Monitor and Archive System of Instrumentation	431
	Z.-D. Tsai, J.-C. Chang, Y.-H. Liu, T.-S. Ueng NSRRC, Hsinchu J.-R. Chen NTHU, Hsinchu
	In the accelerator field, the instrumentation includes the vacuum, magnet, RF, utility, cryogenic, power, safety, optic device and so on. The highly complicate systems have many hybrid SCADA systems to ensure precise and optimum control. For the historical data integration and analysis of those signals, the monitor and archive system is introduced to provide a distributed multi-channel acquisition platform. The system possesses various connectivity of open database, communication protocols and commercial hardware. The signal data can be collected and delivered to the central Storage Area Network (SAN) via fiber network without latency. Finally, the unique, friendly and fast trend logger and data analysis software are also developed to view, compare, and analyze relation between facility at any time and anywhere.
THPMA056	Design of the TPS Bending Chamber	703
	C. K. Chan, C.-C. Chang, C. L. Chen, G.-Y. Hsiung, S-N. Hsu, H. P. Hsueh, Y.-H. Liu, J. Y. Yang NSRRC, Hsinchu J.-R. Chen NTHU, Hsinchu
	The article describes the design, manufacture and treatment of the bending vacuum chamber (B-chamber) of the 3GeV Taiwan Photon Source (TPS). The B-chamber is a 5m long aluminum alloy chamber with an antechamber on the near side of the electron-beam duct. The design of B-chamber is aimed to confine the outgassing source and to reduce the power density and photon stimulated desorption (PSD) induced by synchrotron radiation. Besides, the simulations of B-chamber deformation due to evacuation and thermal distribution of the aluminum crotch absorber are also described.