scholarly journals Compensation of longitudinal coupled-bunch instability in the Advanced Photon Source storage ring

2002 ◽  
Author(s):  
K.C. Karkay ◽  
A. Nassiri ◽  
J.J. Song ◽  
Y.W. Kang ◽  
R.L. Kustom
Keyword(s):  
Storage Ring ◽  
Photon Source

scholarly journals A New Storage-Ring Light Source

2015 ◽  
Vol 30 (22) ◽  
pp. 1530051 ◽  
Author(s):  
Alex Chao
Keyword(s):  
Steady State ◽  
Storage Ring ◽  
High Power ◽  
Photon Radiation ◽  
Molecular Physics ◽  
Ir Radiation ◽  
Power Sources ◽  
Atomic And Molecular Physics ◽  
Photon Source ◽  
Proof Of Principle

A recently proposed technique in storage ring accelerators is applied to provide potential high-power sources of photon radiation. The technique is based on the steady-state microbunching (SSMB) mechanism. As examples of this application, one may consider a high-power DUV photon source for research in atomic and molecular physics or a high-power EUV radiation source for industrial lithography. A less challenging proof-of-principle test to produce IR radiation using an existing storage ring is also considered.

Changes to the Advanced Photon Source storage ring as part of the APS renewal project

2010 ◽  
Author(s):  
M. Borland ◽  
G. Decker ◽  
R. Dejus ◽  
K. Harkay ◽  
E. Moog ◽  
...  
Keyword(s):  
Storage Ring ◽  
Renewal Project ◽  
Photon Source

APS Insertion Devices: Recent Developments and Results

1998 ◽  
Vol 5 (3) ◽  
pp. 189-195 ◽  
Author(s):  
Efim Gluskin
Keyword(s):  
Storage Ring ◽  
Magnetic Measurements ◽  
Closed Orbit ◽  
Vacuum Chambers ◽  
Spectral Diagnostics ◽  
Spectral Flux ◽  
Recent Developments ◽  
Magnetic Tuning ◽  
Photon Source ◽  
Good Agreement

The Advanced Photon Source (APS) now has a total of 23 insertion devices (IDs). Over two-thirds of them are installed on the storage ring. The installed devices include 18, 27 and 55 mm-period undulators; an 85 mm-period wiggler; a 16 cm-period elliptical multipole wiggler; and many 33 mm-period undulators. Most of the IDs occupy storage-ring straight sections equipped with 8 mm vertical-aperture vacuum chambers. All of the IDs were measured magnetically at the APS and, in most cases, underwent a final magnetic tuning in order to minimize variation in the various integrals of the field through the ID over the full gap range. Special shimming techniques to correct magnetic field parameters in appropriate gap-dependent ways were developed and applied. Measurements of the closed-orbit distortion as a function of the ID gap variation have been completed, and results are in a good agreement with magnetic measurements. Spectral diagnostics of the ID radiation, including measurements of the absolute spectral flux, brilliance and polarization, show excellent agreement between calculated and measured results. Studies of the sensitivity of IDs to radiation exposure and measurements of the dose rate received by the IDs are in progress.

scholarly journals The HEPS project

2018 ◽  
Vol 25 (6) ◽  
pp. 1611-1618 ◽  
Author(s):  
Yi Jiao ◽  
Gang Xu ◽  
Xiao-Hao Cui ◽  
Zhe Duan ◽  
Yuan-Yuan Guo ◽  
...  
Keyword(s):  
Storage Ring ◽  
High Energy ◽  
High Energy Photon ◽  
Energy Photon ◽  
High Brightness ◽  
X Ray ◽  
Longitudinal Gradients ◽  
Beijing China ◽  
Photon Source ◽  
Central Slice

The High Energy Photon Source (HEPS), a 6 GeV green-field diffraction-limited storage ring light source, will be built in Beijing, China. The HEPS design has been evolving for about ten years, and is now mostly finished and ready for construction. The storage ring is based on a modified hybrid seven-bend achromat (7BA) design, where bending magnets with reverse bending angles and longitudinal gradients are adopted to reach an ultralow natural emittance of 34.2 pm with a circumference of 1360.4 m. The central slice of the dipole in the middle of the modified hybrid 7BA, with flexible magnetic field, is used as the source of the bending-magnet beamline. Moreover, alternating high- and low-beta sections are specially designed to generate and deliver X-ray synchrotron radiation with high brightness of 5 × 1022 photons s−1 mm−2 mrad−2 (0.1% bandwidth)−1. Here, the HEPS storage ring design and solutions to the challenges inherent in this ultralow-emittance design are presented.

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