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Title: Fast and precise technique for magnet lattice correction via sine-wave excitation of fast correctors

Journal Article · · Physical Review Accelerators and Beams
 [1];  [1];  [1];  [1];  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)

A novel technique has been developed to improve the precision and shorten the measurement time of the LOCO (linear optics from closed orbits) method. This technique, named AC LOCO, is based on sine-wave (ac) beam excitation via fast correctors. Such fast correctors are typically installed at synchrotron light sources for the fast orbit feedback. The beam oscillations are measured by beam position monitors. The narrow band used for the beam excitation and measurement not only allows us to suppress effectively the beam position noise but also opens the opportunity for simultaneously exciting multiple correctors at different frequencies (multifrequency mode). We demonstrated at NSLS-II that AC LOCO provides better lattice corrections and works much faster than the traditional LOCO method.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0012704; AC02-98CH10886
OSTI ID:
1355069
Alternate ID(s):
OSTI ID: 1413915
Report Number(s):
BNL-114344-2017-JA; PRABCJ; TRN: US1800474
Journal Information:
Physical Review Accelerators and Beams, Vol. 20, Issue 5; ISSN 2469-9888
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 6 works
Citation information provided by
Web of Science

References (4)

Model-Independent Beam Dynamics Analysis journal February 1999
Handbook of Accelerator Physics and Engineering book March 1999
Application of independent component analysis to Fermilab Booster journal June 2005
Experimental determination of storage ring optics using orbit response measurements journal March 1997

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