synchrotron-radiation

Paper	Title	Other Keywords	Page
TUYMA02	Commissioning of the Indus-2 Storage Ring	synchrotron, vacuum, storage-ring, booster	61
	V. C. Sahni RRCAT, Indore (M. P.)
	An overview of the 2.5 GeV synchrotron radiation source, Indus-2, which has been set up at RRCAT, Indore will be presented with emphasis on commissioning details. The accelerator is used both as a booster and as a storage ring. Using an injection energy of 550MeV, the beam energy has been ramped up to 2.4 GeV. Two beam lines have also been installed, one for x-ray diffraction (XRD) and another for extended x-ray absorption fine structure (EXAFS) studies. To condition the vacuum chamber of the ring, regular operation has been restricted to 2 GeV. To test the XRD beam line, first diffraction pattern from a pyrolitic graphite sample was recorded with bending magnet synchrotron light with ring operating at 2 GeV. Indigenous technological base created in setting up Indus-2 would be used while participating in up coming international accelerator projects.
	Slides
TUPMA018	Compact Hard X-Ray Synchrotron Radiation Source with Superconducting Bending Magnets	storage-ring, synchrotron, booster, radiation	127
	G. Kulipanov, E. Antokhin, A. Gvozdev, P. V. Logachev, N. A. Mezentsev, V. E. Panchenko, A. V. Philipchenko, Y. V. Rakshun, A. V. Utkin, N. Vinokurov, K. Zolotarev BINP SB RAS, Novosibirsk
	Synchrotron radiation (SR) with relatively hard spectrum (up to 50 keV) is necessary for realization many modern X-ray analytical methods. These methods can be effectively used in industrial and medical applications, in universities and scientific centers. So, the task of developing of compact source of hard synchrotron radiation is very perspective. Budker INP has a big experience for developing and fabrication of high field superconducting insertion devices for different SR centers. In frame of this activity a superconducting bending magnet with field up to 9.6 T was fabricated for BESSY-II and commissioned in 2004. This magnet also became a prototype for compact hard SR source. A project of such storage ring is under developing in Budker INP now. This design fixed beam energy to 1.2 GeV, ring circumference about 52 m. Estimated horizontal equilibrium emittance will better than 20 nm. This report includes a detailed description of main parameters and magnetic structure of designed storage ring as well as preliminary design of injector system and beamline layout.
TUPMA022	Construction Progress of the SSRF Injector	booster, linac, injection, synchrotron	133
	D. M. Li, H. H. Li, Z. Q. Shen, M. H. Zhao, Z. Zhao SINAP, Shanghai
	SSRF (Shanghai Synchrotron Radiation Facility) is a 3rd generation synchrotron radiation source facility under construction. To meet the full energy top-up injection requirements of 3.5GeV storage ring, the injector of SSRF was designed which consists of a 150 MeV linac, a two super-periods 28 cells FODO type booster and two transfer lines (LT and HT). The cycle rate of booster is 1~2 Hz. SSRF was started building in the end of 2004, and the commissioning of accelerator part will be completed in April 2008 according to schedule. The Booster will start the commissioning until Oct 2007. Now most of on-line installing components, power supplies, and instruments are under manufacture or purchasing for SSRF booster. In this paper, the description of SSRF booster design, the progress of booster and transfer lines construction are described. Keywords: SSRF; booster; construction
TUPMA059	Beam Dynamics Effects with Insertion Devices for the Proposed 3 GeV Ring in Taiwan	emittance, lattice, synchrotron, dipole	196
	H. C. Chao, C.-C. Kuo NSRRC, Hsinchu S.-Y. Lee IUCF, Bloomington, Indiana
	The effects of insertion devices on beam dynamics of storage rings were studied. We will focus on the changes of the emittance and energy spread in the presence of insertion devices. Formulas for the beam emittance and the energy spread with insertion devices are also derived, in which an intrinsic parameter depending on the design of the lattice is introduced in the calculations. Simulation results and comparisons of achromatic and non-achromatic cases in the proposed 3 GeV synchrotron radiation light source in Taiwan are shown.
WEPMA070	Control of the Multi-Bunch Instabilities at TLS	feedback, kicker, controls, synchrotron	419
	C. H. Kuo, J. Chen, K. T. Hsu, S. Y. Hsu, K. H. Hu, D. Lee NSRRC, Hsinchu
	To increase stored beam current and provide stable beam for users, RF is upgraded to superconducting and top-up mode injection is operated recently at the TLS. To take advantage of these upgrade, suppress multi-bunch instabilities due to resistive wall of the vacuum chamber, cavity-like structures and ions related instability are essential. FPGA based transverse bunch-by-bunch feedback system and longitudinal feedback system was deployed. Multi-bunch instabilities was successfully suppressed when stored beam current is more than 400 mA. Lower chromaticity operation is possible with the help of transverse feedback system that is essential for injection efficiency improvement in top-up operation mode. Status of the feedback systems and analysis of the behavior of multi-bunch instability will be presented.
WEPMA086	First Experiences with Central Web Based Fault Information System	controls, radiation, synchrotron, power-supply	446
	B. S. Srivastava, P. Fatnani RRCAT, Indore (M. P.)
	Indus Control System operating the Indus-1 and Indus-2 Synchrotron Radiation Sources facilities at RRCAT, Indore is a widely distributed system. It employs, for Indus-1 8 VME Controllers, 300 interface modules, 7 Operator Computers and for Indus-2 approximately 100 Layer-3 VME stations, 10 Layer-2 Supervisory Controllers, 11 Operator Computers and 6 Server Machines. The whole control system is being operated in shifts to provide synchrotron radiation from Indus-1 to users as well as carrying out commissioning experiments of Indus-2. To keep it up and running the faults encountered during its operation are rectified at site and complete observations and rectifications of the faults are recorded electronically by the shift crewmembers in a central web based fault information system. This System is based on three tiers software architecture and has been developed using Java Servlets, HTML, JavaScript and SQL Database. Using relational database, facilities have been provided by the system for logging, e-mailing, acknowledging, exploring and analyzing the faults of various sub systems. This paper briefly describes experience implementations and functionalities provided by the system.
THPMA056	Design of the TPS Bending Chamber	vacuum, synchrotron, storage-ring, radiation	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.