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TY - CONF AU - Donegani, E.M. AU - Grandsaert, T.J. AU - Shea, T.J. AU - Thomas, C.A. ED - Tavares, Daniel ED - Picoreti, Renan ED - Bruno, Gustavo ED - Marques, Sergio ED - Schaa, Volker R.W. TI - The Insertable Beam Stop in the ESS SPK Section J2 - Proc. of IBIC2020, Santos, Brazil, 14-18 September 2020 CY - Santos, Brazil T2 - International Beam Instrumentation Conference T3 - 9 LA - english AB - This paper deals with the Insertable Beam Stop (IBS) to be installed at the transition between the normal conducting and superconducting sections of the ESS linac. The IBS will be used to avoid beam losses in the cryogenic cavities during tuning and commissioning of the ESS linac. The IBS will stop protons in the energy range from 73 MeV to 92 MeV. The proton beam has a current up to 62.5 mA, and 50·10⁻⁶ or 5E-6s long pulses at a rate of 1 or 14 Hz, respectively. Firstly, the IBS was designed in MCNPX/ANSYS to withstand thermal and structural stresses, while minimizing neutron production and limiting the deposited power in the cryogenic cavities below 0.2 W/m. Secondly, the prompt background and residual dose in the vicinity of the IBS were computed, as well as the activation of the IBS components themselves. Finally, a feasibility study was performed to determine if the IBS can be profitably used as a beam-profile monitoring device. The results will serve as input for calculations of the expected signal in beam loss monitors. Moreover, they will enable the design of the nearby shielding limiting the activation of surrounding structures and allowing maintenance works. PB - JACoW Publishing CP - Geneva, Switzerland SP - 114 EP - 116 KW - proton KW - linac KW - radiation KW - shielding KW - MMI DA - 2020/10 PY - 2020 SN - 2673-5350 SN - 978-3-95450-222-6 DO - doi:10.18429/JACoW-IBIC2020-WEPP07 UR - https://www.jacow.org/ibic2020/papers/wepp07.pdf ER -