3-5 September 2007
CERN
Europe/Zurich timezone

Issues Raised by the Design of the LHC Beam Dump Entrance Window

5 Sep 2007, 08:30
20m
40-S2-D01 (CERN)

40-S2-D01

CERN

Geneva, Switzerland
Issues Raised by the Design of the LHC Beam Dump Entrance Window Session 5: Codes and simulations results

Speaker

Raymond Veness (CERN)

Description

The LHC beam dump entrance window consists of a carbon-carbon composite structural sheet backed by a thin stainless steel foil for leak tightness. The design of this window has highlighted issues that merit further investigation. The use of the bulk coefficient of thermal expansion coefficient for the composite should be questioned where there is a significant temperature gradient between individual fibres. Differential thermal expansion between fibre and matrix could lead to thermally induced fatigue. The validity of the analytical dynamic stress model used should be confirmed by finite element or experiment. After a brief description of the window design, I will outline the issues. From this I will draw some conclusions about further analysis and the possible advantages of using windows to perform material and structural experiments.

Primary author

Presentation Materials