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Title: Preparing the BESSY APPLE Undulators for Top-Up Operation

Abstract

BESSY plans to go to topping up operation in the near future. A high injection efficiency is essential to avoid particle losses inside the undulator magnets and to ensure a low radiation background in the beamlines. Dynamic and static multipoles of the insertion devices have to be minimized to accomplish this requirement. APPLE II devices show strong dynamic multipoles in the elliptical and vertical polarization mode. Measurements before and after shimming of these multipoles are presented. The static multipoles of the BESSY UE56-2 which are due to systematic block inhomgeneities have successfully been shimmed recovering the full dynamic aperture.

Authors:
; ; ;  [1]
  1. BESSY GmbH, Albert-Einstein-str. 15, 12489 Berlin (Germany)
Publication Date:
OSTI Identifier:
21043434
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 879; Journal Issue: 1; Conference: 9. international conference on synchrotron radiation instrumentation, Daegu (Korea, Republic of), 28 May - 2 Jun 2006; Other Information: DOI: 10.1063/1.2436063; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; APERTURES; BEAM INJECTION; BESSY STORAGE RING; EFFICIENCY; MULTIPOLES; OPERATION; PARTICLE LOSSES; POLARIZATION; WIGGLER MAGNETS

Citation Formats

Bahrdt, J., Frentrup, W., Gaupp, A., and Scheer, M.. Preparing the BESSY APPLE Undulators for Top-Up Operation. United States: N. p., 2007. Web. doi:10.1063/1.2436063.
Bahrdt, J., Frentrup, W., Gaupp, A., & Scheer, M.. Preparing the BESSY APPLE Undulators for Top-Up Operation. United States. doi:10.1063/1.2436063.
Bahrdt, J., Frentrup, W., Gaupp, A., and Scheer, M.. Fri . "Preparing the BESSY APPLE Undulators for Top-Up Operation". United States. doi:10.1063/1.2436063.
@article{osti_21043434,
title = {Preparing the BESSY APPLE Undulators for Top-Up Operation},
author = {Bahrdt, J. and Frentrup, W. and Gaupp, A. and Scheer, M.},
abstractNote = {BESSY plans to go to topping up operation in the near future. A high injection efficiency is essential to avoid particle losses inside the undulator magnets and to ensure a low radiation background in the beamlines. Dynamic and static multipoles of the insertion devices have to be minimized to accomplish this requirement. APPLE II devices show strong dynamic multipoles in the elliptical and vertical polarization mode. Measurements before and after shimming of these multipoles are presented. The static multipoles of the BESSY UE56-2 which are due to systematic block inhomgeneities have successfully been shimmed recovering the full dynamic aperture.},
doi = {10.1063/1.2436063},
journal = {AIP Conference Proceedings},
number = 1,
volume = 879,
place = {United States},
year = {Fri Jan 19 00:00:00 EST 2007},
month = {Fri Jan 19 00:00:00 EST 2007}
}