Radiation environment in the main ring of the LHC

by C. Fynbo (EST) and G. Stevenson (TIS) (CERN)

Thursday 22 Nov 2001, 14:15 → 15:15 Europe/Zurich

30-7- (CERN)

All components placed in the LHC will suffer from radiation damage during machine operation. Some will also be situated in a highly radioactive environment, thus reliable construction materials and electronics which are sufficiently radiation hard to survive LHC operation will be required. In order to judge the necessary component radiation hardness, detailed information regarding the expected radiation environment in the LHC is essential. This presentation is intended to provide an overview of the data which are now available concerning the expected radiation doses and particle fluences to be found in the main ring of the LHC. An in-depth discussion of the radiation environment in the LHC arcs will be given covering the expected annual dose due to beam-gas interactions, ratios of particle fluence:dose in the tunnel and an estimate of the extra dose in the arc sections due to point losses. Data will also be made available for the dispersion suppressor regions regarding the annual dose downstream of the high luminosity interaction points IP1&5 and discussion made of extension to regions DS3&7. Extra detail regarding the quench diodes in the arcs and the above dispersion regions will also be available.