DEFLECTION AND EXTRACTION OF PB IONS UP TO 33 TEV C BY A BENT SILICONCRYSTAL/

The first results from an experiment to deflect a beam of fully stripp ed, ultrarelativistic pb(82+) ions of 400 GeV/c per unit of charge, eq uivalent to 33 TeV/c, by means of a bent crystal are reported. Deflect ion efficiencies are as high as 14%, in agreement with theoretical est imates. 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 C ERN-SPS, and a high extraction efficiency of up to 10% was found. Thes e represent the first measurements to demonstrate applications of bent crystals in high energy heavy ion beams.