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- H. Tarawneh, H. Nishimura, D. Robin, C. Steier, C. Sun, W. Wan
LBNL, Berkeley, California, USA
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The Advanced Light Source (ALS) at Berkeley Lab has seen many upgrades over the years, keeping it one of the brightest sources for soft x-rays worldwide. Recent developments in magnet technology and lattice design appear to open the door for very large further increases in brightness [1], particularly by reducing the horizontal emittance, even within the space constraints of the existing tunnel. We are investigating the possibility of a new storage ring lattice that could approach the soft x-ray diffraction limit around 2 keV in both planes within the ALS footprint. This note presents an overview of a candidate lattice for diffraction limited ALS and describes the optimization of the dynamical performance of the lattice. In addition on-axis injection scheme is foreseen for this ring and a candidate lattice for an accumulator ring, which will be built and housed either in the ALS storage ring tunnel or the booster tunnel, is also presented.
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- C. Steier, B.J. Bailey, K. Berg, A. Biocca, A.T. Black, P.W. Casey, D. Colomb, R.F. Gunion, N. Li, A. Madur, S. Marks, H. Nishimura, G.C. Pappas, K.V. Petermann, G.J. Portmann, S. Prestemon, A.W. Rawlins, D. Robin, S.L. Rossi, T. Scarvie, D. Schlueter, C. Sun, H. Tarawneh, W. Wan, E.C. Williams
LBNL, Berkeley, California, USA
- C. Chen, J. Jin, Y.M. Wen, J. Wu, L. Yin, J.D. Zhang, Q.G. Zhou
SINAP, Shanghai, People's Republic of China
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Funding: The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.
The Advanced Light Source (ALS) at Berkeley Lab is one of the brightest sources for soft x-rays worldwide. A multiyear upgrade of the ALS is underway, which includes new and replacement x-ray beamlines, a replacement of many of the original insertion devices and many upgrades to the accelerator. The accelerator upgrade that affects the ALS performance most directly is the brightness upgrade, which reduced the horizontal emittance from 6.3 nm to 2.0 nm (2.5 nm effective), resulting in one of the lowest horizontal emittances of operating light sources. Magnets for this upgrade were installed in late 2012 and early 2013 followed by successful commissioning and user operation with 2.0 nm horizontal emittance.
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