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IHEP 2001 - 22 (In Russian)
A.G.Afonin et al (full author's list is in Russian only)
Progress in the Studies of Proton Beam Extraction from U-70 by Means of Bent Monocrystals
Protvino, 2001.-p.7, figs.4, tables 1, refs.:11.


A radical increase in the efficiency of beam extraction from accelerator is reached by use of short, down to 1.8 mm, crystals bent a small angle $\sim$1~mrad, due to an increase in the average number of particle encounters with crystal. A record extraction efficiency of over 80\% at 70~GeV is experimentally achieved, in agreement with theory predictions. The feasibility of efficient work of a crystal at the injection energy, 1.3~GeV is also demonstrated.


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