Reinforcing BOL modules. F. Grancagnolo, R. Perrino INFN Lecce. ATLAS-RPC Meeting / Roma, Nov. 5 th , 2002. History of the BOL sagitta problem.
F. Grancagnolo, R. Perrino
ATLAS-RPC Meeting / Roma, Nov. 5th, 2002.
The reduction of sagitta is obtained with an unaffordable cost increase (according to density)
In addition: the uncertainty on the sagitta is high
Changing the support panel skin from Aluminium to Steel, while leaving the same thickness
The same reduction of sagitta can be obtained by using either material (better Al <=> worst steel)
It is only matter of cost
Thickness of 1.2 mm instead of the current 0.3 mm would drop the expected sagitta from 10 to 3 mm
The choice of increasing the Al skin thickess seems convincing and easily applicable
A prototype should be planned asap and Protvino collaborators should be made aware of this change of production of panel #3