Deflection and extraction of Pb ions up to 33 TeV/c by a bent silicon crystal
Arduini, G × Biino, C Clement, M Cornelis, Kurt Doble, N Elsener, K Ferioli, G Fidecaro, G Gatignon, L Grafstrom, P Gyr, M Herr, W Klem, J Mikkelsen, U Weisse, E Moller, SP Uggerhoj, E Taratin, A Freund, A Keppler, P Major, J #
The first results from an experiment to deflect a beam of fully stripped, ultrarelativistic pb(82+) ions of 400 GeV/c per unit of charge, equivalent to 33 TeV/c, by means of a bent crystal are reported. Deflection efficiencies are as high as 14%, in agreement with theoretical estimates. In a second experiment a bent crystal was used to extract 270 GeV/c-per-charge pb(82+) (22 TeV/c) ions from a coasting beam in the CERN-SPS, and a high extraction efficiency of up to 10% was found. These represent the first measurements to demonstrate applications of bent crystals in high energy heavy ion beams.