IPAC2013 - List of Authors (Sun, C.)

Paper	Title	Page
MOPEA074	Lattice Studies for a Potential Soft X-ray Diffraction Limited Upgrade of the ALS	258
	C. Steier, J.M. Byrd, R.W. Falcone, S.D. Kevan, D. Robin, C. Sun, H. Tarawneh, W. Wan LBNL, Berkeley, California, USA
	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 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 (multi bend achromat lattices) appear to open the door for very large further increases in brightness, particularly by reducing the horizontal emittance, even within the space constraints of the existing tunnel. Initial studies yielded candidate lattices which approach the soft x-ray diffraction limit (around 2 keV) in both planes within the ALS footprint.

MOPEA075	Completion of the Brightness Upgrade of the ALS	261
	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
	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 remains 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 ALS brightness upgrade, which reduced the horizontal emittance from 6.3 to 2.0 nm (2.5 nm effective). Magnets for this upgrade were installed starting in 2012 followed by a transition to user operations with 2.0 nm emittance in spring 2013.

WEPWA069	Design Concepts for an RF Deflecting Cavity-Based Beam Spreader for a Next Generation FEL	2274
	M. Placidi, L.R. Doolittle, P. Emma, J.-Y. Jung, J. Qiang, A. Ratti, C. Sun LBNL, Berkeley, California, USA
	Funding: Work supported by the Director, Office of Science, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231 The Lawrence Berkeley National Laboratory (LBNL) is developing design concepts for a multi-beamline soft x-ray FEL array powered by a superconducting linear accelerator, operating with a high bunch repetition rate of approximately one MHz. Electron bunches supplied by a high-brightness, high-repetition-rate photocathode electron gun are distributed by a beam spreader, designed to deliver individual bunches from a CW linac to an array of independently configurable FEL beamlines with nominal bunch rates up to 100 kHz in each FEL, and with even pulse spacing. We describe recent developments in the technical choices, design and parameters of the spreader system and its main components.

Paper

Title

Page

Lattice Studies for a Potential Soft X-ray Diffraction Limited Upgrade of the ALS

258

C. Steier, J.M. Byrd, R.W. Falcone, S.D. Kevan, D. Robin, C. Sun, H. Tarawneh, W. Wan
LBNL, Berkeley, California, USA

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 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 (multi bend achromat lattices) appear to open the door for very large further increases in brightness, particularly by reducing the horizontal emittance, even within the space constraints of the existing tunnel. Initial studies yielded candidate lattices which approach the soft x-ray diffraction limit (around 2 keV) in both planes within the ALS footprint.

MOPEA075

Completion of the Brightness Upgrade of the ALS

261

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

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 remains 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 ALS brightness upgrade, which reduced the horizontal emittance from 6.3 to 2.0 nm (2.5 nm effective). Magnets for this upgrade were installed starting in 2012 followed by a transition to user operations with 2.0 nm emittance in spring 2013.

WEPWA069

Design Concepts for an RF Deflecting Cavity-Based Beam Spreader for a Next Generation FEL

2274

M. Placidi, L.R. Doolittle, P. Emma, J.-Y. Jung, J. Qiang, A. Ratti, C. Sun
LBNL, Berkeley, California, USA

Funding: Work supported by the Director, Office of Science, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231
The Lawrence Berkeley National Laboratory (LBNL) is developing design concepts for a multi-beamline soft x-ray FEL array powered by a superconducting linear accelerator, operating with a high bunch repetition rate of approximately one MHz. Electron bunches supplied by a high-brightness, high-repetition-rate photocathode electron gun are distributed by a beam spreader, designed to deliver individual bunches from a CW linac to an array of independently configurable FEL beamlines with nominal bunch rates up to 100 kHz in each FEL, and with even pulse spacing. We describe recent developments in the technical choices, design and parameters of the spreader system and its main components.