“…This result, measured on the final modules as constructed, showcases the high efficiency of the microchannel cooling design and confirms the expectations from the initial tests described in Section 2.1. For comparison the best measured TFM to date on a detector system installed at the LHC is 13 K cm 2 W −1 for the integrated steel pipe cooling system of the ATLAS IBL [33], while standalone microchannel and integrated test chips have been shown to achieve TFM values of 3 − 4 K cm 2 W −1 [34,35]. The LHCb tile attachment uses on a star shaped glue pattern to eliminate the possibility of encapsulated voids in the vacuum system, and is not designed for thicknesses much below 50 μm.…”