Rugmai, S.

Paper	Title	Page
TUPMA020	Beam Based Alignment and COD Correction for the Siam Photon Source	130
	S. Rugmai, S. Rugmai Suranaree University of Technology, Nakhon Ratchasima P. Klysubun, C. Kwankasem, P. Sudmuang NSRC, Nakhon Ratchasima
	The first systematic Beam based Alignment (BBA) and COD correction attempt for the Siam Photon Source has been performed. Automated measurements were carried out using MATLAB OPC Toolbox, interfacing to the PLCs of the accelerator control system. Calculations of theoretical parameters were performed with Accelerator Toolbox via MATLAB interface. Since the Beam Position Monitors (BPMs) were not properly calibrated prior to installation beam based calibrations were carried out. Preliminary calibration factors for each BPM were obtained by normalizing BPM signals to modeled steering magnet responses. Measurements of offsets between BPM and quadrupole centers were performed by fitting for minima of orbit response to changes of quadrupole strengths. The resulting offsets were superimposed to the BPM readings in the PLC. COD correction was then performed.
TUPMA020	Beam Based Alignment and COD Correction for the Siam Photon Source	130
	S. Rugmai, S. Rugmai Suranaree University of Technology, Nakhon Ratchasima P. Klysubun, C. Kwankasem, P. Sudmuang NSRC, Nakhon Ratchasima
	The first systematic Beam based Alignment (BBA) and COD correction attempt for the Siam Photon Source has been performed. Automated measurements were carried out using MATLAB OPC Toolbox, interfacing to the PLCs of the accelerator control system. Calculations of theoretical parameters were performed with Accelerator Toolbox via MATLAB interface. Since the Beam Position Monitors (BPMs) were not properly calibrated prior to installation beam based calibrations were carried out. Preliminary calibration factors for each BPM were obtained by normalizing BPM signals to modeled steering magnet responses. Measurements of offsets between BPM and quadrupole centers were performed by fitting for minima of orbit response to changes of quadrupole strengths. The resulting offsets were superimposed to the BPM readings in the PLC. COD correction was then performed.
THC3MA01	Operation and Recent Developments at the Siam Photon Source	607
	P. Klysubun, S. Cheedket, G. G. Hoyes, C. Kwankasem, M. Oyamada, S. Rugmai, S. Rujirawat NSRC, Nakhon Ratchasima
	The Siam Photon Source (SPS) is a dedicated synchrotron radiation facility located in Nakhon Ratchasima, Thailand. After successful commissioning and recent energy upgrade from 1.0 GeV to 1.2 GeV, the Siam Photon Source is currently well into user mode of operation. The light source is now providing routinely synchrotron radiation in the vacuum ultraviolet and soft x-ray spectral ranges to both internal and external researchers. In this report we describe the overview of the current machine performance including user availability, the progresses made recently, and the planned machine improvements, which emphasizes on improving beam stability and machine reliability. Plan to install two insertion devices, a permanent magnet planar undulator and a superconducting magnet wavelength shifter, is also discussed.
	Slides