skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Lower Emittance Lattice for the Advanced Photon Source Upgrade Using Reverse Bending Magnets

Abstract

The Advanced Photon Source (APS) is pursuing an upgrade to the storage ring to a hybrid seven-bend-achromat design [1]. The nominal design provides a natural emittance of 67 pm [2]. By adding reverse dipole fields to several quadrupoles [3, 4] we can reduce the natural emittance to 41 pm while simultaneously providing more optimal beta functions in the insertion devices and increasing the dispersion function at the chromaticity sextupole magnets. The improved emittance results from a combination of increased energy loss per turn and a change in the damping partition. At the same time, the nonlinear dynamics performance is very similar, thanks in part to increased dispersion in the sextupoles. This paper describes the properties, optimization, and performance of the new lattice.

Authors:
; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1379946
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Conference
Resource Relation:
Conference: 2016 North American Particle Accelerator Conference, 10/09/16 - 10/14/16, Chicago, IL, US
Country of Publication:
United States
Language:
English

Citation Formats

Borland, M., Berenc, T., Sun, Y., and Sajaev, V. Lower Emittance Lattice for the Advanced Photon Source Upgrade Using Reverse Bending Magnets. United States: N. p., 2017. Web. doi:10.18429.
Borland, M., Berenc, T., Sun, Y., & Sajaev, V. Lower Emittance Lattice for the Advanced Photon Source Upgrade Using Reverse Bending Magnets. United States. https://doi.org/10.18429
Borland, M., Berenc, T., Sun, Y., and Sajaev, V. Thu . "Lower Emittance Lattice for the Advanced Photon Source Upgrade Using Reverse Bending Magnets". United States. https://doi.org/10.18429. https://www.osti.gov/servlets/purl/1379946.
@article{osti_1379946,
title = {Lower Emittance Lattice for the Advanced Photon Source Upgrade Using Reverse Bending Magnets},
author = {Borland, M. and Berenc, T. and Sun, Y. and Sajaev, V.},
abstractNote = {The Advanced Photon Source (APS) is pursuing an upgrade to the storage ring to a hybrid seven-bend-achromat design [1]. The nominal design provides a natural emittance of 67 pm [2]. By adding reverse dipole fields to several quadrupoles [3, 4] we can reduce the natural emittance to 41 pm while simultaneously providing more optimal beta functions in the insertion devices and increasing the dispersion function at the chromaticity sextupole magnets. The improved emittance results from a combination of increased energy loss per turn and a change in the damping partition. At the same time, the nonlinear dynamics performance is very similar, thanks in part to increased dispersion in the sextupoles. This paper describes the properties, optimization, and performance of the new lattice.},
doi = {10.18429},
url = {https://www.osti.gov/biblio/1379946}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2017},
month = {6}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: