1. 1 SLHC-WP5 Progress 24.11.2008 Contributions from I. Dawson, L. Nicolas (U Birmingham), S. Pospisil (ITU Prague) T. Kramer, B. Goddard, M. Benedikt, Helmut Vincke (CERN AB and SC-RP) Presented by Th. Otto (CERN, SC-RP)

2. SLHC-WP5 Progress 24.11.2008 2 Which questions to answer ? Injectors and SLHC: Where do significant beam losses occur ? Consequence for environment (air, water, earth) Consequence for maintainability (survival, personal dose during repair) Experiments: What is the radiation environment for (new) subdetectors ? Consequence for maintainability (survival, personal dose during exchange)

3. SLHC-WP5 Progress 24.11.2008 3 Accelerators: Identify “Bottlenecks” Analysing the new injector chain one by one LINAC-4, lp-SPL: optimised for small losses PS-2: injection dump internal dumps SPS: not yet addressed SLHC: Collimation regions Exact scheme of interaction region -> experiments

4. SLHC-WP5 Progress 24.11.2008 4 T. Kramer AB-BT-TL 4 External beam line dump PS2 extraction line dump TED External H- injection dump PS2 injection transfer line dump TED(s) Internal fast injection dump Internal emergency dump SPS TT12 EAs PS2 TT10 from SPL Example: Beam dumps in PS-2 T. Kramer et al, CERN

5. SLHC-WP5 Progress 24.11.2008 5 Example: Beam dumps in PS-2 PS2 dump Beam loads [p + /y] 4 GeV4-20 GeV20-50 GeV50 GeV 1. PS2 injection transfer line dump3.1x10 18 --- 2. Internal fast injection dump1.1x10 18 --- 3. External H - injection dump6.4x10 19 --- 4. Internal emergency dump-8.2x10 18 2.7x10 18 - 5. External beamline dump--5.5x10 18 6.9x10 18 One item with necessary design effort for radiation safety/ radiation protection identified Additional estimates of air-, water- and ground activation necessary T. Kramer et al, CERN

6. SLHC-WP5 Progress 24.11.2008 6 Experiments: Radiation Damage and Activation Main tool for predictions of radiological impact are numerical simulations. Must be validated ! ATLAS Personnel allocated (U Birmingham, CTU Prague) Different radiation detectors calibrated (gamma, neutron) and installed Functionality partially tested since 10. 9. New detector simulation files (FLUKA) in preparation CMS Radiation detectors installed 1 doctoral student partially available Both Waiting for beam in 2009 to continue validation. Integrated luminosity of 10 31 for ATLAS RadMon reqd. (U Birmingham)

7. SLHC-WP5 Progress 24.11.2008 7 Short look onto installed devices MPX01, MPX02 and MPX03: Radiation hard connection Cable length of about 22 m 7 S. Pospisil, Prague

8. SLHC-WP5 Progress 24.11.2008 8 03:17:27 – 60s acquisiton10:21:02– 60s acquisiton 21:31:14 – 60s acquisiton ATLAS-MPX device no. 15 (position R=200mm; Z=18.74m) 8 S. Pospisil, Prague

9. SLHC-WP5 Progress 24.11.2008 9 New ATLAS FLUKA Geometry Current version “av17” will be updated to free format, with names will comply with the new neutron treatment in FLUKA 2008.3.4 L. Nicolas et al, Birmingham

10. SLHC-WP5 Progress 24.11.2008 10 Outlook: until 1 st Anniversary Accelerator: (hopefully) recruit personnel (CERN-Fellow) Coordinate tasks with partners (PSI, GSI) Complete “survey” of injectors and SLHC Write-up of deliverable Experiments: Complete characterisation of various radiation detectors Continue predictive simulations of radiation dose and activation Next summer: validate simulations with beam via radiation detectors