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Title: Performance of Small-Gap Undulators at the SLS Intermediate Energy Storage Ring

Abstract

The Swiss Light Source (SLS) at the Paul Scherrer Institut (PSI) became the first medium energy synchrotron user facility to rely on the high harmonic operation of small gap, short period undulators to extend high brightness radiation into a regime (3-18 keV) otherwise only accessible using lower brightness wigglers or operation at higher electron beam energy. Today several facilities with beam energy 2-3 GeV follow a similar route. A PSI/SPring-8 collaboration was formed to install and operate the first in-vacuum undulator shortly after commissioning of the SLS storage ring (2.4 GeV) in 2001. The goal of the joint project was to prove that high harmonic operation of small period undulators at small gaps is a valid concept to operate the PX-I beamline at 1 Aa under user operation conditions. The performance of the PX-I beamline proved to be excellent and launched the installation of meanwhile 4 new in-vacuum undulators. Having routinely operated such devices for 5 years, our experience confirms that (1) the concept of operating short period undulators (19-24 mm) on higher harmonics (11./13.) is valid, (2) reliable small gap (5-6 mm) undulator operation is feasible in the presence of top-up injection, and (3) during gap scans the photonmore » beam can be stabilized to sub-{mu}rad precision using non-intercepting photon beam monitors.« less

Authors:
; ; ; ; ; ; ; ;  [1]; ; ;  [2]
  1. Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen (Switzerland)
  2. RIKEN/SPring-8, 1-1-1 Koutu, Mikazuki-cho, Sayo-gun, Hyogo 679-5148 (Japan)
Publication Date:
OSTI Identifier:
21052533
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: 10.1063/1.2436081; (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; ACCURACY; BEAM MONITORS; COMMISSIONING; ELECTRON BEAMS; GEV RANGE; KEV RANGE; OPERATION; PERFORMANCE; PHOTON BEAMS; SPRING-8 STORAGE RING; SWISS LIGHT SOURCE; SYNCHROTRON RADIATION; WIGGLER MAGNETS

Citation Formats

Ingold, G., Boege, M., Bulgheroni, W., Keller, A., Krempaski, J., Schulze-Briese, C., Schulz, L., Schmidt, T., Zimoch, D., Hara, T., Tanaka, T., and Kitamura, H.. Performance of Small-Gap Undulators at the SLS Intermediate Energy Storage Ring. United States: N. p., 2007. Web. doi:10.1063/1.2436081.
Ingold, G., Boege, M., Bulgheroni, W., Keller, A., Krempaski, J., Schulze-Briese, C., Schulz, L., Schmidt, T., Zimoch, D., Hara, T., Tanaka, T., & Kitamura, H.. Performance of Small-Gap Undulators at the SLS Intermediate Energy Storage Ring. United States. doi:10.1063/1.2436081.
Ingold, G., Boege, M., Bulgheroni, W., Keller, A., Krempaski, J., Schulze-Briese, C., Schulz, L., Schmidt, T., Zimoch, D., Hara, T., Tanaka, T., and Kitamura, H.. Fri . "Performance of Small-Gap Undulators at the SLS Intermediate Energy Storage Ring". United States. doi:10.1063/1.2436081.
@article{osti_21052533,
title = {Performance of Small-Gap Undulators at the SLS Intermediate Energy Storage Ring},
author = {Ingold, G. and Boege, M. and Bulgheroni, W. and Keller, A. and Krempaski, J. and Schulze-Briese, C. and Schulz, L. and Schmidt, T. and Zimoch, D. and Hara, T. and Tanaka, T. and Kitamura, H.},
abstractNote = {The Swiss Light Source (SLS) at the Paul Scherrer Institut (PSI) became the first medium energy synchrotron user facility to rely on the high harmonic operation of small gap, short period undulators to extend high brightness radiation into a regime (3-18 keV) otherwise only accessible using lower brightness wigglers or operation at higher electron beam energy. Today several facilities with beam energy 2-3 GeV follow a similar route. A PSI/SPring-8 collaboration was formed to install and operate the first in-vacuum undulator shortly after commissioning of the SLS storage ring (2.4 GeV) in 2001. The goal of the joint project was to prove that high harmonic operation of small period undulators at small gaps is a valid concept to operate the PX-I beamline at 1 Aa under user operation conditions. The performance of the PX-I beamline proved to be excellent and launched the installation of meanwhile 4 new in-vacuum undulators. Having routinely operated such devices for 5 years, our experience confirms that (1) the concept of operating short period undulators (19-24 mm) on higher harmonics (11./13.) is valid, (2) reliable small gap (5-6 mm) undulator operation is feasible in the presence of top-up injection, and (3) during gap scans the photon beam can be stabilized to sub-{mu}rad precision using non-intercepting photon beam monitors.},
doi = {10.1063/1.2436081},
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}
}