diagnostics

Paper	Title	Other Keywords	Page
WEPMA054	Photon Beam Position Monitor with Hydraulic Level System	storage-ring, photon, feedback, controls	398
	Y. J. Han, J. Choi, J. Y. Huang, S. N. Kim, Y.-C. Kim PAL, Pohang, Kyungbuk I. S. Ko POSTECH, Pohang, Kyungbuk
	In a synchrotron radiation source like the Pohang Light Source (PLS), a great effort has been made on beam stability improvements. For the beamline user-sided orbit feedback, Photon Beam Position Monitor(PBPM) provides more practical informations on the position and angle of the electron beam at the center of the bending magnet, compared the closed orbit data. For improvement of the orbit stability, PBPMs are used in PLS. However, as the ground of PLS moves about 2mm every year, we also monitor the level difference between the storage ring and the beamline floor with Hydraulic Level System (HLS). The design and experimental results of PBPM with HLS will be presented.
WEPMA060	Measurements using the X-Ray and Optical Diagnostic Beamlines at the Australian Synchrotron	storage-ring, synchrotron, emittance, single-bunch	407
	G. LeBlanc, J. C. Bergstrom, M. J. Boland, R. T. Dowd, M. J. Spencer, Y. E. Tan ASP, Clayton, Victoria D. J. Peake, R. P. Rassool Melbourne, Melbourne
	First Light has been achieved on the diagnostic beamlines at the Australian Synchrotron 3 GeV storage ring. The X-ray Diagnostic Beamline (XDB) has been used to measured the beam size, divergence and emittance, while the Optical Diagnostic Beamline (ODB) has been used the measure the bunch length and turn-by-turn stability. Both beamlines receive dipole radiation from a bend magnet and provide continuous diagnostic data to the control room. The beamlines compliment each other with the ODB providing mainly longitudinal (temporal) information, while the XDB measures predominantly transverse (spatial) information. A brief description is given of the equipment on each beamline and the commissioning results are presented.
WEPMA063	Diagnostic Supports for Top-Up Operation at TLS	injection, synchrotron, storage-ring, linac	410
	K. H. Hu, J. Chen, K. T. Hsu, C. H. Kuo, C.-J. Wang NSRRC, Hsinchu
	Routine top-up operation of Taiwan Light Source (TLS) was started from October 2005. Various diagnostics tools are needed to support the top-up operation. These tools include diagnostics for injection efficiency, filling pattern, tune, instability, loss pattern measurement. Design consideration, details and future plans of these diagnostics will be summary in this report.
WEPMA065	Experience of Beam Diagnostic Systems in Commissioning Stage of Indus-2	injection, storage-ring, synchrotron, betatron	413
	T. A. Puntambekar, L. K. Babbar, A. Banerji, A. Deep, A. C. Holikatti, D. K. Joshi, A. Karnewar, S. Kotaiah, M. Kumar, R. K. Nathwani, S. K. Suhane, Y. Tyagi, S. Yadav RRCAT, Indore (M. P.)
	Indus-2 is a 2.5 GeV synchrotron radiation source under commissioning at this center. Beam injection trials in the storage ring began in August 2005. Beam diagnostics systems played an important role during commissioning of the storage ring. Beam diagnostic systems installed in the machine include beam profile monitor, orbit measurement system, wall current monitor, DCCT, striplines, tune measurement system and sighting beam line. This paper describes the diagnostic systems, experience of operation of these systems during commissioning, results obtained and the present status. During the initial stages of beam injection and circulation in INDUS-2 wall current monitors, beam profile monitors and sighting beam line proved to be of utmost help. In the current stage of near routine beam operation, the main focus has shifted to the measurement of beam parameters with the objective of improving beam current and lifetime. A study of beam orbit measurement was recently taken up. The beam orbit was measured before and after generating an orbit perturbation. A study of betatron tune measurements has been initiated.
WEPMA087	Control System for Beam Diagnostic System of Indus-2	controls, electron, monitoring, injection	449
	A. Chauhan, P. Fatnani, S. Gangopadhyay, B. N. Merh RRCAT, Indore (M. P.)
	This paper presents the Beam Diagnostics Control System for Indus-2 that monitors and controls the parameters related to Beam Profile Monitors (BPM), Beam Position Indicators (BPI), Direct Current Transformer (DCCT) and XZ-selection for strip-lines. The system has three-layered architecture. The middle and lower layer have VME stations with CPU cards having RTOS OS-9. The lowest layer has nine stations that house various Analog and Digital I/O boards connected to the actual devices in the field. The boards include 4-channel 16-bit ADC cards developed for BPI interfacing. The middle layer collects the data from lower layer and passes to top layer and passes the commands from top layer to the lower layer. The top layer has the GUI for operator control built using a SCADA software PVSS. It provides various features to the user for graphical display, trending, configuring, controlling, data-logging and selective data monitoring of the parameters. This system finds use right from the beam injection stage to the Orbit correction stage in addition to the normal operation stage of the machine.
THZMA02	Status of the Australian Synrotron project	storage-ring, injection, booster, synchrotron	583
	G. LeBlanc ASP, Clayton, Victoria
	The Australian Synchrotron, a synchrotron light facility based on a 3-GeV electron storage ring, is currently being commissioned at a site in the Metropolitan District of Melbourne. On July 14, 2006 less than three years after earth moving machines started to prepare the site, beam was captured, accumulated and stored in the storage ring. Storage ring commissioning, and beamline installation and commissioning will continue through March 2007, after which the facility will officially become operational. In this paper we give a brief overview of the facility and its beamlines, followed by the latest results from accelerator commissioning activities.
	Slides