JOINT AB AND LHC PROJECT SEMINAR: Possible SPS experiments to test crystal collimation for the LHC

by Scandale, W. (CERN-AT)

Thursday 2 Feb 2006, 11:00 → 12:00 Europe/Zurich

AB Auditorium Meyrin (CERN)

We recently suggested using short bent crystals as primary collimators in a two stage cleaning system for hadron colliders, with the aim of providing larger impact parameters in the secondary bulk absorber through coherent beam-halo deflection. Tests with crystals a few mm long, performed with 70 GeV proton beams at IHEP in Protvino, showed a channeling efficiency exceeding 85 %. We also observed disturbing phenomena such as dechanneling at large impact angles, insufficient bending induced by volume capture inside the crystal, multiple scattering of non-channeled protons and, for the first time, a proton flux reflected by the crystalline planes.

The proposed experiments in the SPS should contribute to consolidating our knowledge of channeling and dechanneling and will provide a test bed to be eventually used in the LHC collimation system.



Organiser(s): Werner Herr (AB/ABP), John Miles (AT/MAS)
More information: http://cern.ch/AB-seminar/

more information more information