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TY - CONF AU - Tischer, M. AU - Aggarwal, M. AU - Bahrdt, J. AU - Dutt, R.N. AU - Ghosh, S. AU - Karmakar, J. AU - Neumann, P. AU - Rial, E.C.M. AU - Sahu, S. AU - Schöps, A. AU - Vagin, P. AU - Vielitz, T. AU - Wohlenberg, T. ED - Liu, Lin ED - Byrd, John M. ED - Neuenschwander, Regis T. ED - Picoreti, Renan ED - Schaa, Volker R. W. TI - Magnetic Tuning and Installation Modifications of U48 Undulator for the Delhi Light Source (DLS) J2 - Proc. of IPAC2021, Campinas, SP, Brazil, 24-28 May 2021 CY - Campinas, SP, Brazil T2 - International Particle Accelerator Conference T3 - 12 LA - english AB - 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. PB - JACoW Publishing CP - Geneva, Switzerland SP - 2918 EP - 2920 KW - undulator KW - electron KW - controls KW - vacuum KW - focusing DA - 2021/08 PY - 2021 SN - 2673-5490 SN - 978-3-95450-214-1 DO - doi:10.18429/JACoW-IPAC2021-WEPAB131 UR - https://jacow.org/ipac2021/papers/wepab131.pdf ER -