| AVS 56th International Symposium & Exhibition | |
| Vacuum Technology | Wednesday Sessions |
| Session VT-WeA |
| Session: | Modeling and Accelerators |
| Presenter: | H.C. Hseuh, Brookhaven National Laboratory |
| Authors: | H.C. Hseuh, Brookhaven National Laboratory L. Doom, Brookhaven National Laboratory M.J. Ferreira, Brookhaven National Laboratory C. Longo, Brookhaven National Laboratory P. Settepani, Brookhaven National Laboratory K. Wilson, Brookhaven National Laboratory |
| Correspondent: | Click to Email |
National Synchrotron Light Source II (NSLS-II), being constructed at Brookhaven, is a 3-GeV, 500 mA, 3rd generation synchrotron radiation facility with ultra low emittance electron beams. The storage ring vacuum system has a circumference of 792 m and consists of over 250 vacuum chambers ranging from 1 m to 6 m in length, and an average operating pressure of less than 1x10-9 mbar to minimize beam-residual gas interactions. Most vacuum chambers are made of aluminum and stainless steel, with different cross sections either fitted into the bending magnets or surrounded by multipole magnets. The layout of the storage ring vacuum systems will be presented. The detailed design of the vacuum chambers, the pumps and the photon absorbers will be described. The aluminum chambers are extruded, curved with 25 m radii in the case of the bending chambers, precision machined and welded to bi-metal Conflat flanges using robotic welding machines. The fabrication and evaluation of these aluminum chambers will be presented.
*Work performed under auspices of the United States Department of Energy, under contract DE-AC02-98CH10886