Production of high energy photons with in vacuum wigglers: From SOLEIL wiggler to MAXIV wiggler

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding


Small gap wigglers become more and more attractive to produce high photon fluxes in the hard X-ray photon range. They use magnet blocks of high magnetization which resists much better to heating (baking, synchrotron radiation) than in the past, produce high magnetic field with numerous periods and are very compact. They also are a very good alternative to superconducting technology which requires special infrastructure, heavy maintenance and is not running cost free. SOLEIL, operating presently at 2.75 GeV has designed and built an in-vacuum wiggler of 38 periods of 50 mm producing 2.1 T at a minimum gap of 5.5 mm to delivered photon beam between 20 keV and 50 keV. Already in operation, further improvements are presently in progress to push photons towards higher energy, in particular thanks to the operation at lower gap (4.5 mm). MAX IV and SOLEIL, in the frame of collaboration, ave built an upgraded version of the existing SOLEIL wiggler with the target to extend the spectral range at high energy (above 50 keV) but also at low energy (4 keV) with the same insertion device. The design of the existing magnetic system has been modified to reach 2.4 T at a minimum gap of 4.2 mm and includes taper operation to avoid undulator structure in the radiated spectrum at low energy.


  • O. Marcouille
  • F. Marteau
  • S. Tripathi
  • A. Thiel
  • K. Tavakoli
  • J. L. Marlats
  • A. Mary
  • M. Valleau
  • J. Vétéran
  • L. Chapuis
  • P. Berteaud
  • T. El Ajjouri
  • P. Brunelle
  • C. Herbeaux
  • N. Bechu
  • A. Lestrade
  • J. P. Itie
  • A. Nadji
  • N. Guignot
  • M. E. Couprie
External organisations
  • Synchrotron SOLEIL
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Accelerator Physics and Instrumentation
Original languageEnglish
Title of host publicationProceedings of the 13th International Conference on Synchrotron Radiation Instrumentation, SRI 2018
EditorsShangjr Gwo, Tzu-Hung Chuang, Yao-Chang Lee, Ashish Atma Chainani, Yu-Chun Chuang, Chun-Chieh Wang, Di-Jing Huang, Der-Hsin Wei, Gwo-Huei Luo, Jyh-Fu Lee, Hong-Ji Lin, Gung-Chian Ying, Cheng-Maw Cheng, Jhih-Min Lin, Jin-Ming Chen, Ping-Jung Chou, Ching-Shiang Huang, Yaw-Wen Yang, U-Ser Jeng, Chin-Cheng Kuo, Hwo-Shuenn Sheu, Shih-Chun Chung, Wai-Keung Lau, Hsin-Yi Lee, Mau-Tsu Tang
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735417823
Publication statusPublished - 2019 Jan 15
Publication categoryResearch
Event13th International Conference on Synchrotron Radiation Instrumentation, SRI 2018 - Taipei, Taiwan, Province of China
Duration: 2018 Jun 112018 Jun 15


Conference13th International Conference on Synchrotron Radiation Instrumentation, SRI 2018
CountryTaiwan, Province of China