The Optimization Of Beam-line Performance In BSRF

This paper closely links BSRF (Beijing Synchrotron Radiation Facility) building, and expands around the synchrotron radiation beam line performance improvement and optimization, and summed up the work that author has done in the science and engineering in BSRF.With the successful completion of the second phase of BSRF project, the experimental station of SR (Synchrotron Radiation) intensity has been enhanced. And the beam stability problems emerged. The paper analyzed the impact of the stability of SR beam on experiment, and detecting and improvements of the stability. The author has optimized the design of the beam position detection equipment - double blade XBPM and double wire XBPM. And the BPMs have been installed in a number of front-ends. The stability of beams have been accurately determined and obviously improved. The cooling of the first crystal has always been a problem that is not yet well solved. The author and colleagues have analyzed the optimization of the first monochromatic crystal structure, and has now completed the processing. The processing technology is being tested. The author has also calculated 1W2 synchrotron radiation performance in colliding mode. It has provided a theoretical basis for running of colliding mode.In the second period of BSRF project, 1W2A, a new Small-Angle X-ray Scattering Beam-line has been opened. This paper analyzed the optimization and improvement of 1W2A Beam-line performance. The author has developed a synchrotron radiation power calculation software, and analyzed the effect of the heat load on the bending crystal monochromator calculation, and guided the transformation of the bending crystal monochromator thermal stability. The author has analyzed the mechanical structure of bending crystal, given the proposal of the mechanical bending. The author has give the optimal configuration of the double-slit by using phase space diagram analysis and statistical theory, has realized the calculation of the graphic method.Scientific issues on the forefront need more stringent requirements for synchrotron radiation, such as better collimation, more photon flux density or higher energy resolution, and so on. Micro-focusing optical devices have emerged. The thesis has introduced several micro-focusing devices, calculated and measured the micro- focusing devices that BSRF will develop. As for the capillary focusing device, the authors has designed and performed measurement, then give the theory interpretation. The author proposed multi-point beam wide fitting method for getting beam divergence. In KB-bending micro-focusing device design, the author put forward the whole situation optimization project instead of the traditional central Taylor approximation method. The new method made the point light theoretical difference a lower order of magnitude. The author got rid of Shadow software which has functional bottlenecks, and made use of mathematical calculation software for the simulation experiments independently. The results were in very good agreement with the theory. This work has certain significance for BSRF ongoing micro-focusing device design and manufacturing.