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arXiv · hep-ex/0111028

New projects of crystal extraction at IHEP 70-GeV accelerator

A. G. Afonin·V. M. Biryukov·V. N. Chepegin·Yu. A. Chesnokov·V. I. Kotov·V. I. Terekhov·E. F. Troyanov·Yu. S. Fedotov·Yu. M. Ivanov·W. Scandale·M. B. H. Breese
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Abstract

Using channeling in a 5-mm crystal with bending angle of 0.65 mrad, a record high efficiency, over 60%, of particle extraction from accelerator was achieved. The extracted beam intensity was up to 5.2*10^11 protons per spill of 0.5 s duration. Also, the first proof-of-principle experiment on 'crystal collimation' was performed where crystal - serving as a scraper - has reduced the radiation level in the accelerator by a factor of two. The measurements agree with Monte Carlo predictions.

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A. G. Afonin, V. M. Biryukov, V. N. Chepegin, Yu. A. Chesnokov, V. I. Kotov, V. I. Terekhov, E. F. Troyanov, Yu. S. Fedotov, Yu. M. Ivanov, W. Scandale, M. B. H. Breese. 2001-11-08. New projects of crystal extraction at IHEP 70-GeV accelerator. https://arxiv.org/abs/hep-ex/0111028

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