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Construction and Testing of the Final Focus Quadrupole R&D Magnet for the Super-KEKB Interaction Region

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3 Author(s)
Ohuchi, N. ; KEK High Energy Accel. Res. Organ., Tsukuba ; Higashi, N. ; Terashima, A.

Super-KEKB is designed to be a next generation particle accelerator with a target luminosity of 4 times 1035 cm-2s-1. For the interaction region, a final focus quadrupole R&D magnet was designed and constructed. The design field gradient and effective magnetic length were 40.12 T/m and 0.299 m, respectively. The magnet consists of 6 layer coils. After construction, the magnet was tested at 4.2 K and a preliminary field measurement was performed. The magnet was energized to a current of 1800 A, which corresponds to 95.8% of the conductor limit, and the quadrupole component error was 0.23 % of the design value.

Published in:

Applied Superconductivity, IEEE Transactions on  (Volume:18 ,  Issue: 2 )