Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2001-10-31
EPAC 2000 Proceedings (Vienna), pp.364-366
Physics
High Energy Physics
High Energy Physics - Experiment
6pp. Presented at EPAC 2000
Scientific paper
Bent crystal was extracting 70-GeV protons with average intensity 4*10^11 (as measured in external beamline) per spill of 1.6 s duration, in parallel to the simultaneous work of two internal targets in the accelerator ring. An additional crystal, placed in the external beamline, was deflecting a small part of the extracted beam with intensity 10^7 protons toward another physics experiment. Crystal-extracted beam had a typical size of 4 mm by 4 mm fwhm at the end of the external beamline. Measurements for the extraction efficiency and other characteristics at the simultaneous work of four experimental set-ups are presented. With crystal working in the above-said regime during one month, no degradation of channeling was observed. The studies of extraction efficiency have been continued with new crystals.
Afonin A. G.
Biryukov Valery M.
Chesnokov Yu. A.
Fedotov Yu. S.
Galyaev N. A.
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