Thermal simulation of ATLAS barrel SCT modules - I

A finite element thermal analysis is performed for the various configurations of the ATLAS barrel SCT module. The design of the module are based on the recent proposal by RAL to reduce the overall radiation thickness of the module. Its several variations are also evaluated. The main goal of the present calculation is to estimate the safety margin for the thermal runaway. Eight different module geometries as listed in Table 1 are evaluated. Figure 1 shows the mod-Table 1 Module models model description model-RAL Original model given by RAL in mid March, 1997 model-1 BeO picture-frame baseboard model-2 model-1 but with a longer PG basebaord model-3 model-1 but the baseboard is all made of PG model-4 model-3 with no thermal connection on the other bridge side model-5 model-3 added by BeO stiffeners on both sides of PG tongues. model-6 suggested by Y. Unno model-8 model-6 but PG extended to the cooling-side edge