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TY - CONF AU - Khachatryan, V. AU - Andorf, M.B. AU - Bazarov, I.V. AU - Bergan, W.F. AU - Crittenden, J.A. AU - Levenson, S.J. AU - Maxson, J.M. AU - Rubin, D.L. AU - Shanks, J.P. AU - Wang, S. ED - Zimmermann, Frank ED - Tanaka, Hitoshi ED - Sudmuang, Porntip ED - Klysubun, Prapong ED - Sunwong, Prapaiwan ED - Chanwattana, Thakonwat ED - Petit-Jean-Genaz, Christine ED - Schaa, Volker R.W. TI - Helical Wiggler Design for Optical Stochastic Cooling at CESR J2 - Proc. of IPAC2022, Bangkok, Thailand, 12-17 June 2022 CY - Bangkok, Thailand T2 - International Particle Accelerator Conference T3 - 13 LA - english AB - A helical wiggler with parameter k_{u}nd=4.35 has been designed for the Optical Stochastic Cooling (OSC) experiment in the Cornell Electron Storage Ring (CESR). We consider four Halbach arrays, which dimensions are optimized to get the required helical field profile, as well as, to get the best Dynamic Aperture (DA) in simulations. The end poles are designed with different dimensions to minimize the first and second field integrals to avoid the need of additional correctors for the beam orbit. The design is adopted to minimize the risks for the magnet blocks demagnetization. To quantify the tolerances, we simulated the effects of different types of geometrical and magnetic field errors on the OSC damping rates. In addition, to understand the challenges for the construction, as well as, to validate the model field calculations, we prototyped a small two period version. The prototype field is compared to the model, and the results are presented in this work. PB - JACoW Publishing CP - Geneva, Switzerland SP - 2751 EP - 2754 KW - wiggler KW - simulation KW - electron KW - storage-ring KW - permanent-magnet DA - 2022/07 PY - 2022 SN - 2673-5490 SN - 978-3-95450-227-1 DO - doi:10.18429/JACoW-IPAC2022-THPOPT066 UR - https://jacow.org/ipac2022/papers/thpopt066.pdf ER -