Author: Schöps, A.
Paper Title Page
WEPAB131 Magnetic Tuning and Installation Modifications of U48 Undulator for the Delhi Light Source (DLS) 2918
 
  • M. Tischer, P. Neumann, A. Schöps, P. Vagin, T. Vielitz, T. Wohlenberg
    DESY, Hamburg, Germany
  • M. Aggarwal, R.N. Dutt, S. Ghosh, J. Karmakar, S. Sahu
    IUAC, New Delhi, India
  • J. Bahrdt, E.C.M. Rial
    HZB, Berlin, Germany
 
  A com­pact THz ra­di­a­tion fa­cil­ity based on the prin­ci­ple of a pre-bunched Free Elec­tron Laser, called Delhi Light Source (DLS) is at the final stage of com­mis­sion­ing at IUAC, New Delhi, India. For gen­er­a­tion of THz ra­di­a­tion in DLS, an un­du­la­tor with pe­riod length of 48 mm (U48), built by HZB and re­fur­bished at DESY will be used. The mag­netic tun­ing and the field mea­sure­ments have been done on the U48 along with the de­sign and in­stal­la­tion of cor­rec­tion coils at the en­trance/exit of the U48. In ad­di­tion, hor­i­zon­tal and ver­ti­cal am­bi­ent field cor­rec­tion coils were in­te­grated into the mag­net gird­ers. A quadru­pole cor­rec­tion coil along the vac­uum cham­ber in order to mit­i­gate the de­fo­cus­ing ef­fect of the U48 on the elec­tron beam has been de­signed. The cur­rent through all coils has been ad­justed as a func­tion of the gap by the new con­trol sys­tem de­signed for the U48. In ad­di­tion, an ex­truded alu­minium vac­uum cham­ber was de­signed and fab­ri­cated and will be aligned with the the un­du­la­tor soon.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB131  
About • paper received ※ 19 May 2021       paper accepted ※ 05 July 2021       issue date ※ 11 August 2021  
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