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TY - CONF AU - Carra, F. AU - Apeland, J. AU - Calaga, R. AU - Capatina, O. AU - Capelli, T. AU - Verdú-Andrés, S. AU - Zanoni, C. ED - Schaa, Volker RW ED - Arduini, Gianluigi ED - Pranke, Juliana ED - Seidel, Mike ED - Lindroos, Mats TI - Assessment of Thermal Loads in the CERN SPS Crab Cavities Cryomodule J2 - Proc. of IPAC2017, Copenhagen, Denmark, 14â19 May, 2017 C1 - Copenhagen, Denmark T2 - International Particle Accelerator Conference T3 - 8 LA - english AB - As a part of the HL-LHC upgrade, a cryomodule is designed to host two crab cavities for a first test with protons in the SPS machine. The evaluation of the cryomodule heat loads is essential to dimension the cryogenic infrastructure of the system. The current design features two cryogenic circuits. The first circuit adopts superfluid helium at 2 K to maintain the cavities in the superconducting state. The second circuit, based on helium gas at a temperature between 50 K and 70 K, is connected to the thermal screen, also serving as heat intercept for all the interfaces between the cold mass and the external environment. An overview of the heat loads to both circuits, and the combined numerical and analytical estimations, is presented. The heat load of each element is detailed for the static and dynamic scenarios, with considerations on the design choices for the thermal optimization of the most critical components. PB - JACoW CP - Geneva, Switzerland SP - 2047 EP - 2050 KW - cavity KW - cryomodule KW - HOM KW - radiation KW - pick-up DA - 2017/05 PY - 2017 SN - 978-3-95450-182-3 DO - 10.18429/JACoW-IPAC2017-TUPVA008 UR - http://jacow.org/ipac2017/papers/tupva008.pdf ER -